Nanometer-scale composite structures composed of organic molecules intimately incorporated with inorganic molecules. (Glossary of Biotechnology and Nanobiotechology Terms, 4th ed)
Calcium fluoride. Occurring in nature as the mineral fluorite or fluorspar. It is the primary source of fluorine and its compounds. Pure calcium fluoride is used as a catalyst in dehydration and dehydrogenation and is used to fluoridate drinking water. (From Merck Index, 11th ed)
Nanoparticles produced from metals whose uses include biosensors, optics, and catalysts. In biomedical applications the particles frequently involve the noble metals, especially gold and silver.
Silver. An element with the atomic symbol Ag, atomic number 47, and atomic weight 107.87. It is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. Long-continued use of silver salts can lead to a form of poisoning known as ARGYRIA.
A yellow metallic element with the atomic symbol Au, atomic number 79, and atomic weight 197. It is used in jewelry, goldplating of other metals, as currency, and in dental restoration. Many of its clinical applications, such as ANTIRHEUMATIC AGENTS, are in the form of its salts.
Erbium. An element of the rare earth family of metals. It has the atomic symbol Er, atomic number 68, and atomic weight 167.26.
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
Poly-2-methylpropenoic acids. Used in the manufacture of methacrylate resins and plastics in the form of pellets and granules, as absorbent for biological materials and as filters; also as biological membranes and as hydrogens. Synonyms: methylacrylate polymer; poly(methylacrylate); acrylic acid methyl ester polymer.
Method of using a polycrystalline powder and Rietveld refinement (LEAST SQUARES ANALYSIS) of X-RAY DIFFRACTION or NEUTRON DIFFRACTION. It circumvents the difficulties of producing single large crystals.
Technique whereby the weight of a sample can be followed over a period of time while its temperature is being changed (usually increased at a constant rate).
Cyclic amide of caproic acid used in manufacture of synthetic fibers of the polyamide type. Can cause local irritation.
Ytterbium. An element of the rare earth family of metals. It has the atomic symbol Yb, atomic number 70, and atomic weight 173. Ytterbium has been used in lasers and as a portable x-ray source.
A colloidal, hydrated aluminum silicate that swells 12 times its dry size when added to water.
Inorganic compounds that contain cadmium as an integral part of the molecule.
Synthetic resins, containing an inert filler, that are widely used in dentistry.
The quality or state of being able to be bent or creased repeatedly. (From Webster, 3d ed)
Propylene or propene polymers. Thermoplastics that can be extruded into fibers, films or solid forms. They are used as a copolymer in plastics, especially polyethylene. The fibers are used for fabrics, filters and surgical sutures.
Tellurium. An element that is a member of the chalcogen family. It has the atomic symbol Te, atomic number 52, and atomic weight 127.60. It has been used as a coloring agent and in the manufacture of electrical equipment. Exposure may cause nausea, vomiting, and CNS depression.
Iron (II,III) oxide (Fe3O4). It is a black ore of IRON that forms opaque crystals and exerts strong magnetism.
Calcium salts of phosphoric acid. These compounds are frequently used as calcium supplements.
A group of thermoplastic or thermosetting polymers containing polyisocyanate. They are used as ELASTOMERS, as coatings, as fibers and as foams.
Nanometer-sized tubes composed mainly of CARBON. Such nanotubes are used as probes for high-resolution structural and chemical imaging of biomolecules with ATOMIC FORCE MICROSCOPY.
Electron microscopy in which the ELECTRONS or their reaction products that pass down through the specimen are imaged below the plane of the specimen.
Materials used in the production of dental bases, restorations, impressions, prostheses, etc.
The reaction product of bisphenol A and glycidyl methacrylate that undergoes polymerization when exposed to ultraviolet light or mixed with a catalyst. It is used as a bond implant material and as the resin component of dental sealants and composite restorative materials.
A group of elements that include SCANDIUM; YTTRIUM; and the LANTHANOID SERIES ELEMENTS. Historically, the rare earth metals got their name from the fact that they were never found in their pure elemental form, but as an oxide. In addition they were very difficult to purify. They are not truly rare and comprise about 25% of the metals in the earth's crust.
An element of the rare earth family of metals. It has the atomic symbol Y, atomic number 39, and atomic weight 88.91. In conjunction with other rare earths, yttrium is used as a phosphor in television receivers and is a component of the yttrium-aluminum garnet (YAG) lasers.
The hardening or polymerization of bonding agents (DENTAL CEMENTS) via exposure to light.
The mineral component of bones and teeth; it has been used therapeutically as a prosthetic aid and in the prevention and treatment of osteoporosis.
The development and use of techniques to study physical phenomena and construct structures in the nanoscale size range or smaller.
Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.
Relating to the size of solids.
A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)
Hard, amorphous, brittle, inorganic, usually transparent, polymerous silicate of basic oxides, usually potassium or sodium. It is used in the form of hard sheets, vessels, tubing, fibers, ceramics, beads, etc.
Nanometer sized fragments of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY TECHNIQUES.
Materials which have structured components with at least one dimension in the range of 1 to 100 nanometers. These include NANOCOMPOSITES; NANOPARTICLES; NANOTUBES; and NANOWIRES.
Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.
A polymer obtained by reacting polyacrylic acid with a special anion-leachable glass (alumino-silicate). The resulting cement is more durable and tougher than others in that the materials comprising the polymer backbone do not leach out.
Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.
Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.
An oxide of aluminum, occurring in nature as various minerals such as bauxite, corundum, etc. It is used as an adsorbent, desiccating agent, and catalyst, and in the manufacture of dental cements and refractories.
Compounds based on fumaric acid.
A spectroscopic technique in which a range of wavelengths is presented simultaneously with an interferometer and the spectrum is mathematically derived from the pattern thus obtained.
Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).
Artificial substitutes for body parts and materials inserted into organisms during experimental studies.
Light sources used to activate polymerization of light-cured DENTAL CEMENTS and DENTAL RESINS. Degree of cure and bond strength depends on exposure time, wavelength, and intensity of the curing light.
Characteristics or attributes of the outer boundaries of objects, including molecules.
An allotropic form of carbon that is used in pencils, as a lubricant, and in matches and explosives. It is obtained by mining and its dust can cause lung irritation.
Synthesized magnetic particles under 100 nanometers possessing many biomedical applications including DRUG DELIVERY SYSTEMS and CONTRAST AGENTS. The particles are usually coated with a variety of polymeric compounds.
The scattering of x-rays by matter, especially crystals, with accompanying variation in intensity due to interference effects. Analysis of the crystal structure of materials is performed by passing x-rays through them and registering the diffraction image of the rays (CRYSTALLOGRAPHY, X-RAY). (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Spectrophotometry in the infrared region, usually for the purpose of chemical analysis through measurement of absorption spectra associated with rotational and vibrational energy levels of molecules. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

Singlet oxygen generation from water-soluble quantum dot-organic dye nanocomposites. (1/277)

Water-soluble quantum dot-organic dye nanocomposites have been prepared via electrostatic interaction. We used CdTe quantum dots with diameters up to 3.4 nm, 2-aminoethanethiol as a stabilizer, and meso-tetra(4-sulfonatophenyl)porphine dihydrochloride (TSPP) as an organic dye. The photophysical properties of the nanocomposite have been investigated. The fluorescence of the parent CdTe quantum dot is largely suppressed. Instead, indirect excitation of the TSPP moiety leads to production of singlet oxygen with a quantum yield of 0.43. The nanocomposite is sufficiently photostable for biological applications.  (+info)

A mesoporous pattern created by nature in spicules from Thetya aurantium sponge. (2/277)

Siliceous or carbonate spicules provide support and defense to marine sponges. The inorganic envelope usually embodies a protein core. Our SAXS study of the siliceous spicules from the demosponge Thetya aurantium proves the very ordered structure assumed by the protein core inside the spicules. Indeed, not only the very sharp diffraction spots already found in previous studies on spicules from different sponges are confirmed, but also the 11 sharp spots in the diffraction pattern recorded after thermal treatment at 250 degrees C can only be interpreted in terms of a natural nanocomposite mesostructure with an hexagonal lattice formed by a three-dimensional periodic arrangement of silica cages in which the protein units act as structure directing agent.  (+info)

Preparation and properties of chitosan/calcium phosphate composites for bone repair. (3/277)

Chitosan/calcium phosphate (CaP) composites composed of bioactive calcium phosphate and flexible chitosan were made by a simple mixing-and-heating method. Phase composition, morphology, and mechanical properties--including in-air and in vitro fatigue behavior - were evaluated. Experimental results showed that the chitosan matrix did not affect the crystalline phase of CaP. However, the content of CaP additive affected the three-point bending strength of the composites. A CaP/ chitosan ratio of 5% by mass to volume in the composite achieved the significantly highest bending strength of 45.7 MPa. Stability of chitosan/CaP hybrid composites was apparently affected by in vitro cyclic loading. Nonetheless, when applied a loading stress of 11.4 MPa, the sample containing the optimal 5 mass/vol% CaP lasted 40 minutes in in vitro fatigue test until failure occurred. It was thus concluded that hybrid biocomposites with initial high strength might be a potential implant candidate for bone defect repair.  (+info)

Preparation of carbon nanotube-alginate nanocomposite gel for tissue engineering. (4/277)

A novel scaffold material based on an alginate hydrogel which contained carbon nanotubes (CNTs) was prepared, and its mechanical property and biocompatibility evaluated. Soluble CNTs were prepared with acid treatment and dispersed in sodium alginate solution as a cross-linker. After which, the mechanical property (elastic deformation), saline sorption, histological reaction, and cell viability of the resultant nanocomposite gel (CNT-Alg gel) were evaluated. The CNT-Alg gel showed faster gelling and higher mechanical strength than the conventional alginate gel. Saline sorption amount of freeze-dried CNT-Alg gel was equal to that of the alginate gel. In terms of histological evaluation and cell viability assay, CNT-Alg gel exhibited a mild inflammatory response and non-cytotoxicity. These results thus suggested that CNT-Alg gel could be useful as a scaffold material in tissue engineering with the sidewalls of CNTs acting as active sites for chemical functionalization.  (+info)

Nanocomposites with Ca and PO4 release: effects of reinforcement, dicalcium phosphate particle size and silanization. (5/277)

OBJECTIVES: Nanoparticles of dicalcium phosphate anhydrous (DCPA) were synthesized in our laboratory for the first time and incorporated into a dental resin. Our goal was to develop a mechanically strong dental composite that has Ca and PO(4) ion release to combat tooth caries, and to investigate the effects of whisker reinforcement, DCPA particle size and silanization. METHODS: DCPA nanoparticles and two larger DCPA particles were used with nano-silica-fused whiskers as fillers in a resin matrix. Composite mechanical properties were measured via three-point flexure, and the release of Ca and PO(4) ions were measured versus time. RESULTS: Using DCPA nanoparticles with a diameter of 112nm, the composite at a DCPA:whisker mass ratio of 1:1 had a flexural strength (mean+/-S.D.; n=5) of (112+/-17)MPa, not significantly different from (112+/-14)MPa of a commercial non-releasing composite; both were higher than (29+/-7)MPa for the composite at DCPA:whisker of 1:0 (p<0.05). The composite with DCPA particle size of 112nm released Ca to a concentration of 0.85mmol/L and PO(4) of 3.48mmol/L, higher than Ca of 0.67mmol/L and PO(4) of 1.11mmol/L using DCPA with 12microm particle size (p<0.05). Silanization of DCPA increased the composite strength at DCPA:whisker of 1:0 compared to that without silanization, but decreased the Ca and PO(4) release (p<0.05). Increasing the DCPA particle surface area increased the Ca and PO(4) release. SIGNIFICANCE: Decreasing the DCPA particle size increased the Ca and PO(4) release; whisker reinforcement increased the composite strength by two- to three-fold. The nano DCPA-whisker composites, with high strength and Ca and PO(4) release, may provide the needed, unique combination of stress-bearing and caries-inhibiting capabilities.  (+info)

Enamel inspired nanocomposite fabrication through amelogenin supramolecular assembly. (6/277)

Fabricating the structures similar to dental enamel through the in vitro preparation method is of great interest in the fields of dentistry and material sciences. Developing enamel is composed of calcium phosphate mineral, water, and enamel matrix proteins, mainly amelogenins. To prepare a material mimicking such composition a novel approach of simultaneously assembling amelogenin and calcium phosphate precipitates by electrolytic deposition (ELD) was established. It was found that recombinant full-length amelogenin (rP172) self-assembled into nanochain structures during ELD (following increase in solution pH), and had significant effect on the induction of the parallel bundles of calcium phosphate nanocrystals, grown on semiconductive silicon wafer surface. When a truncated amelogenin (rP148) was used; no nanochain assembly was observed, neither parallel bundles were formed. The coating obtained in the presence of rP172 had improved elastic modulus and hardness when compared to the coating incorporated with rP148. Our data suggest that the formation of organized bundles in amelogenin-apatite composites is mainly driven by amelogenin nanochain assembly and highlights the potential of such composite for future application as dental restorative materials.  (+info)

Effects of calcium phosphate nanoparticles on Ca-PO4 composite. (7/277)

Nano-particles of dicalcium phosphate anhydrous (DCPA) were synthesized for the first time. The objectives of this study were to incorporate DCPA nano-particles into resin for Ca-PO(4) release to combat dental caries, and to investigate the filler level effects. Nano-DCPA and nano-silica-fused silicon nitride whiskers at a 1:1 ratio were used at filler mass fractions of 0-75%. The flexural strengths in MPa (mean +/- SD; n = 6) of DCPA-whisker composites ranged from (106 +/- 39) at 0% fillers to (114 +/- 23) at 75% fillers, similar to (112 +/- 22) of a non-releasing composite (TPH) (p > 0.1). The composite with 75% fillers in a NaCl solution (133 mmol/L, pH = 7.4, 37 degrees C) yielded a Ca concentration of (0.65 +/- 0.02) mmol/L and PO(4) of (2.29 +/- 0.07) mmol/L. Relationships were established between ion-release and DCPA volume fraction V(DCPA): Ca = 4.46 V(DCPA)(1.6,) and = 66.9 V(DCPA)(2.6). Nano-DCPA-whisker PO(4) composites had high strength and released high levels of Ca-PO(4) requisite for remineralization. These new nano-composites could provide the needed combination of stress-bearing and caries-inhibiting capabilities.  (+info)

Fabrication and evaluation of Bis-GMA/TEGDMA dental resins/composites containing nano fibrillar silicate. (8/277)

OBJECTIVE: To investigate the reinforcement of Bis-GMA/TEGDMA dental resins (without conventional glass filler) and composites (with conventional glass filler) with various mass fractions of nano fibrillar silicate (FS). METHODS: Three dispersion methods were studied to separate the silanized FS as nano-scaled single crystals and uniformly distribute them into dental matrices. The photo-curing behaviors of the Bis-GMA/TEGDMA/FS resins were monitored in situ by RT-NIR to study the photopolymerization rate and the vinyl double bond conversion. Mechanical properties (flexural strength, elastic modulus and work-of-fracture) of the nano FS reinforced resins/composites were tested, and analysis of variance (ANOVA) was used for the statistical analysis of the acquired data. The morphology of nano FS and the representative fracture surfaces of its reinforced resins/composites were examined by SEM/TEM. RESULTS: Impregnation of small mass fractions (1% and 2.5%) of nano FS into Bis-GMA/TEGDMA (50/50 mass ratio) dental resins/composites improved the mechanical properties substantially. Larger mass fraction of impregnation (7.5%), however, did not further improve the mechanical properties (one way ANOVA, P>0.05) and may even reduce the mechanical properties. The high degree of separation and uniform distribution of nano FS into dental resins/composites was a challenge. Impregnation of nano FS into dental resins/composites could result in two opposite effects: a reinforcing effect due to the highly separated and uniformly distributed nano FS single crystals, or a weakening effect due to the formation of FS agglomerates/particles. SIGNIFICANCE: Uniform distribution of highly separated nano FS single crystals into dental resins/composites could significantly improve the mechanical properties of the resins/composites.  (+info)

|p|Offering improved barrier properties, fire resistance, and strength, polymer nanocomposites are increasingly desirable as coating, structural, and packaging materials in a wide range of automobile, civil, and electrical engineering applications|b|. Polymer Nanocomposites|/b| offers a comprehensive review of the main types of polymer nanocomposites and their properties. Part I reviews the range of layered silicates and discusses such properties as flammability, thermal stability, barrier properties, wear resistant and biodegradability. Part II considers nanotubes, nanoparticles, and inorganic-organic hybrid systems, and analysis elasticity and strength as well as magnetic and light-emitting properties.|/p|
This study was designed to investigate functionality of tetracycline‐loaded chitosan‐halloysite nanocomposite films, with focus on evaluating the influence of chitosan molar mass on films applicability for sustained local antibiotic delivery. The films were prepared by casting and solvent evaporation using low, medium, and high molar mass chitosan. SEM analysis revealed compact, nonporous and rough surface of the nanocomposite films due to the presence of halloysite agglomerates and tetracycline crystals. Increasing chitosan molar mass led to higher values of elongation at break (from 21.65 ± 2.65 to 34.48 ± 2.34%), tensile strength (from 134.8 ± 13.21 to 246.36 ± 14.69 MPa), and elastic modulus (from 633.79 ± 128.37 to 716.55 ± 60.76 MPa) of the nanocomposite films. FT‐IR, XRPD, and thermal analyses confirmed molar mass dependent chitosan‐halloysite interactions and improved thermal stability of the nanocomposite films in comparison with chitosan films. The nanocomposite films ...
TY - JOUR. T1 - The influence of electrically conductive and non-conductive nanocomposite scaffolds on the maturation and excitability of engineered cardiac tissues. AU - Navaei, Ali. AU - Rahmani Eliato, Kiarash. AU - Ros, Robert. AU - Migrino, Raymond Q.. AU - Willis, Brigham C.. AU - Nikkhah, Mehdi. PY - 2019/2/1. Y1 - 2019/2/1. N2 - Utilization of electrically conductive nanomaterials for developing nanocomposite scaffolds has been at the center of attention for engineering functional cardiac tissues. The primary motive in the use of conductive nanomaterials has been to develop biomimetic scaffolds to recapitulate the extracellular matrix (ECM) of the native heart and to promote cardiac tissue maturity, excitability and electrical signal propagation. Alternatively, it is well accepted that the inclusion of nanomaterials also alters the stiffness and nano-scale topography of the scaffolds. However, what is missing in the literature is that to what extent the sole presence of nanomaterials ...
Polymer nanocomposites with practically all the commercial polymer matrices have been synthesized and nano-scale filler dispersion has been achieved with varying degrees of success. The commercial polymer nanocomposites studied to a great extent are unfortunately non-biodegradable like polyethylene, polypropylene and polystyrene etc. To a small extent, these nanocomposites are reformed or recycled into other products after one life cycle, however, the properties of such recycled materials are very poor. Therefore, subject of bio-based nanocomposites and biodegradable nanocomposites has become topic of interest in the recent years and a number of suitable bio-based and biodegradable polymer matrices have been developed and their property enhancement have been reported after the incorporation of the inorganic filler materials. These systems include poly(lactic acid), poly(butyl succinate), alginate, cellulosic plastics, gelatine, starch, soy protein based polymers, plant oil based polymers, poly
Using inorganic fullerene-like (IF) nanoparticles and inorganic nanotubes (INT) in organic-inorganic hybrid composite, materials provide the potential for improving thermal, mechanical, and tribological properties of conventional composites. The processing of such high-performance hybrid thermoplastic polymer nanocomposites is achieved via melt-blending without the aid of any modifier or compatibilizing agent. The incorporation of small quantities (0.1-4 wt.%) of IF/INTs (tungsten disulfide, IF-WS2 or molybdenum disulfide, MoS2) generates notable performance enhancements through reinforcement effects and excellent lubricating ability in comparison with promising carbon nanotubes or other inorganic nanoscale fillers. It was shown that these IF/INT nanocomposites can provide an effective balance between performance, cost effectiveness, and processability, which is of significant importance for extending the practical applications of diverse hierarchical thermoplastic-based composites.
A kind of molecular-level dispersed and highly oriented graphene monolayer nanocomposite film was successfully obtained by in situ reduction of phenyl isocyanate functionalized graphite oxide (RPIGO) in N,N-dimethylformamide in the presence of polystyrene (PS). Atomic force microscopy and transmission electron microscopy results show that the RPIGO monolayers were not only homogeneously intercalated into the PS matrix but also arranged parallel to the surface of the nanocomposite films. Because of the efficient interaction between the graphene monolayers and PS matrix, the mechanical properties of the graphene-based nanocomposite films improved significantly. Compared with the pure PS film, a 28.4% increase in the Youngs modulus and a 27.8% improvement in the tensile strength of the RPIGO-PS nanocomposites films were obtained with the addition of only 0.5 wt % graphite oxide. The glass-transition temperature and onset degradation temperature of PS also increased from 96.6 and 427°C to 103.2 ...
1. Introduction. In recent years there has been much attention given to polymer-clay nanocomposites, particularly those developed with layered silicates due to the need of more efficient engineering materials, and because of the fact that pure polymers do not present the properties needed for certain applications. Several methods have been applied for the preparation of polymer-clay nanocomposites, such as melting intercalation, the most used among them1.. Polymeric nanocomposites are hybrid materials where inorganic nanosized substances are dispersed in a polymer matrix2-3. Polymer layered silicate nanocomposites are compared to conventional polymeric composites due to the use of fillers to improve some specific properties1. Such nanocomposites present improvement on mechanical, thermal, flammability and dimensional stability properties, using low concentrations of silicate, around 1-5% by weight4.. From the surveys conducted by the Toyota group which developed polyamide 6 nanocomposites using ...
Polymer nanocomposites are composed of a nanofiller with a polymer matrix. Typical fillers include nanoclay, carbon nanotubes, nanoparticle silver, nanoalumina, etc. The materials exhibit unique material properties, such as improved barrier properties, flame retardance, and mechanical properties, depending on filler choice. A critical barrier to obtaining optimal properties is the need for excellent dispersion of the nanofiller, coupled with uniform distribution throughout the polymer matrix. To create the materials in an industrially relevant manner, continuous melt mixing processes are necessary. Dispersion is dependent on processing parameters, and functionalization of the filler to enhance compatibility with the polymer. During processing it is critical to provide sufficient energy input to the mixture to break up the agglomerated filler. Energy input is controlled by melt viscosity, temperature, screw speed, etc. Moreover, approaches to quantify the dispersion and distribution are needed. This work
Multifunctional polymer nanocomposites (PNCs) are attractive for the design of tunable RF and microwave components such as flexible electronics, attenuators, and antennas due to cost-effectiveness and durability of polymeric matrices. In this work, three separate PNCs were synthesized. Magnetite (Fe3O4) and cobalt ferrite (CFO) nanoparticles, synthesized by thermal decomposition, were used as PNC fillers. Polymers used in this work were a commercial polymer provided by the Rogers Corporation (RP) and polyvinylidene fluoride (PVDF). PNCs in this thesis consist of Fe3O4 in RP, CFO in RP, and Fe3O4 in PVDF. Characterization techniques for determining morphology of the nanoparticles, and their resulting PNCs, include x-ray diffraction, transmission electron microscopy and magnetometry. All magnetometry measurements were taken using a Quantum Design Physical Property Measurement System with a superconducting magnet. Temperature and external magnetic field magnetization measurements revealed that all samples
Buy Polymer Nanocomposites Based on Inorganic and Organic Nanomaterials (Polymer Science and Plastics Engineering) by Sanat Mohanty From WHSmith today! ...
Polymer Nanocomposites Coating for Anticorrosion Application: 10.4018/978-1-5225-7838-3.ch009: Corrosion is the foremost reason for the deterioration of metallic components used in harsh environments and hence research on the development of an
This review discusses the application of SLA for polymer nanocomposites fabrication to show the technologys potential in increasing the applicability of current SLA‐printed parts.
With rising global oil prices and global warming, energy crisis poses a threat to living standards, societal security, economy, and even global environment. Advanced functional materials, including polymer nanocomposites, have begun to play an unprecedented role in our ultimate objective of sustainable and clean energy production, energy transportation, storage, and end usage.
Synthesis, Properties and Applications of Polymer Nanocomposites scheduled on April 16-17, 2020 in April 2020 in Cape Town is for the researchers, scientists, scholars, engineers, academic, scientific and university practitioners to present research activities that might want to attend events, meetings, seminars, congresses, workshops, summit, and symposiums.
Dielectric Polymer Nanocomposites provides the first in-depth discussion of nano-dielectrics, an emerging and fast moving topic in electrical insulation.
Two approaches to the calculation of the percolation threshold in polymer nanocomposites have been analyzed, namely, the excluded-volume theory and the mod
TY - JOUR. T1 - ZnS-nanocrystals/polypyrrole nanocomposite film based immunosensor. AU - Mishra, Sujeet K.. AU - Pasricha, Renu. AU - Biradar, Ashok M.. AU - Rajesh, PY - 2012/1/30. Y1 - 2012/1/30. N2 - We report an electrochemically synthesized ZnS nanocrystals modified polypyrrole (PPy) nanocomposite film based immunosensor for the detection of C-reactive protein (CRP). The ZnS-PPy composite film was characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM) and electrochemical techniques. The modified film showed good biocompatibility with efficient binding to protein antibody (αCRP-Ab) molecules through ZnS nanocrystals, exhibited an attractive platform for immunosensor fabrication. The electrical and sensing properties of the polymer composite film of different thickness towards protein antigen (αCRP-Ag) were delineated. The immunosensor exhibited an impedance response to αCRP-Ag concentration in a linear range from 10 ng to 10 g mL -1.. AB - We report an ...
Abstract : Clay-based nanocomposites have been studied for several decades, mainly focusing on clay-polymer nanocomposites. Here, we report on a simple wet chemical method to synthesize clay-APTES-Au (CAAu) nanocomposites, where 3-aminopropyltriethoxysilane (APTES) acts as the linkage. The silane terminal of APTES formed bonds with the clay surface, while the other -NH(2) terminal bonds to gold nanoparticles. The color of clay changed when these CAAu nanocomposites were formed. By changing the size of the gold nanoparticles, the color of CAAu could be adjusted, simply by changing process parameters. TEM characterization of the synthesized nanocomposites showed an even distribution of gold nanoparticles on the clay surfaces. The nanocomposites were stable in strong acid and high concentration of salt conditions, while strong basic solution like NaOH could slightly influence the status of the gold nanoparticles due to the rupture of the Si-O-Si bonds between APTES and clay. To demonstrate the ...
Zinc oxide-PVA nanocomposite films were fabricated adopting a simple method based on solution-casting, incorporating small weight percentages (,1.2 wt%) of ZnO in PVA (∼0.625×10{sup −3}M to 7×10{sup −3}M), and their structure, morphology, linear and low threshold nonlinear optical properties were investigated. The films were characterized as nanostructured ZnO encapsulated between the molecules/chains of the semicrystalline host polymer PVA. The samples exhibited low threshold nonlinear absorption and negative nonlinear refraction, as studied using the Z-scan technique. A switchover from SA to RSA was observed as the concentration of ZnO was increased. The optical limiting of 632.8 nm CW laser light displayed by these nanocomposite films is also demonstrated. The estimated values of the effective coefficients of nonlinear absorption, nonlinear refraction and third-order nonlinear susceptibility, ,χ{sup (3)},, compared to those reported for continuous wave laser light excitation, measure ...
1. Historical development of composite and nanocomposite materials. Basic types, characterization and properties of nanocomposites. 2. Utilization of polymeric nanocomposites in automotive and aerospace industry, protective clothing, fire-fighting substances and corrosive materials. 3. Carbon composites, metal and carbon composites carbon-carbon composites. 4. Ceramic nanomaterials. Carbides, nitrides, oxides, sulfides and bioceramics (compatible with living tissue). 5. Nanoglass and nanoclastered composite metal glass (nanoglass preparation and use for electronic data storage - DVD). 6. Coated nanoparticles (coated nanoparticles and coated materials, super hard-coated nanoparticles, their unique magnetic, optical and catalytic properties of coated nanoparticles in colloidal mixtures). 7. Silsesquioxas (silsesquioxan structure, polyhedral silsesquioxans, silsesquioxans polymers. 8. Nanocomposite dyes (basic types, the distribution of color guest and inorganic hosts, methods of preparation of ...
After their discovery in 1991 by Iijima [1], carbon nanotubes (CNTs) have attracted considerable interest because of their unique as well as superior physical, electrical, magnetic, chemical stability, thermal conductivity and mechanical properties [2]. Due to their exceptionally high aspect ratio and mechanical properties, incorporation of small amounts of CNTs into a polymer matrix is expected to enhance the properties of the resulting nanocomposites more than any existing material. The most critical issue of CNTs/polymer nanocomposites is the adhesion/compatibility between the nanotubes and polymer which ultimately controls the interface between the CNTs and the polymer matrix. Unfortunately pure CNTs are insoluble in any organic solvents and they tend to form agglomerates because of strong Van der Wall forces which results in negative effects on the properties of the resulting nanocomposites. As such achieving a high degree of dispersion of CNTs in any polymer matrix is quite a challenging ...
The intrinsically conducting polymer (ICP), polyaniline (PANI) has been synthesized by chemical polymerization process with the help of water soluble support polymer poly (vinyl pyrrolidone) (PVP). The X-ray diffraction of synthesized PANI-PVP polymer reveals that the polymeric nanocomposites are partially crystalline with orthorhombic phase at room temperature. The morphology of these composite polymers has been studied by Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM). The dielectric measurement of the sample is performed in the frequency range 100 Hz - 1MHz and temperature range 213-313 K. An analysis of real and imaginary parts of dielectric permittivity and the electric modulus indicate the polydispersive nature of relaxation time as confirmed by Cole-Cole plot of the complex permittivity. The frequency dependence of modulus spectra is found to obey an Arrhenius law with activation energy of 0.07 eV. The frequency dependent electrical data has been analyzed in ...
List of Contributors. Preface.. Editor Biographies.. 1 Nanocomposites: State of the Art, New Challenges and Opportunities (Ranimol Stephen and Sabu Thomas).. 1.1 Introduction.. 1.2 Various Nanofillers.. 1.3 Rubber Nanocomposites.. 1.4 Future Outlook, Challenges and Opportunities.. References.. 2 Manufacturing Techniques of Rubber Nanocomposites (Jun Ma, Li-Qun Zhang and Li Geng).. 2.1 Introduction.. 2.2 Melt Compounding.. 2.3 Solution Blending.. 2.4 Latex Compounding.. 2.5 Summary.. Acknowledgments.. References.. 3 Reinforcement of Silicone Rubbers by Sol-Gel In Situ Generated. Filler Particles (Liliane Bokobza and Amadou Lamine Diop).. 3.1 Introduction.. 3.2 Synthetic Aspects.. 3.3 Properties of the Hybrid Materials.. 3.4 Conclusions.. References.. 4 Interface Modification and Characterization (Jun Ma, Li-Qun Zhang and Jiabin Dai).. 4.1 Introduction.. 4.2 Rubber Nanocomposites Without Interface Modification.. 4.3 Interface Modification by Nonreactive Routes.. 4.4 Interface Modification by ...
This article reviews nanocomposites focusing on their impact and recent trends in the field of bone grafting. Although autogenous- and allogeneic-bone grafts have been used for a long time in bone therapies, there is still a donor shortage and infection risk. As an alternative, synthetic biomaterials have been developed and clinically used as bone grafts, but most of them differ substantially from natural bone either compositionally or structurally. It remains a great challenge to design an ideal bone graft that emulates natures own structure. Owing to the composition and structural similarity to natural bone, most of the current investigations involve the use of nanocomposites, particularly hydroxyapatite/collagen system, as promising bone grafts, but it is surprising that none of the reports review the rationale and design strategy of such nanocomposites in detail for the benefit of researchers. Accordingly, this article addresses the state-of-the-art of those nanocomposites and provides ...
Conformation of macromolecules and interchain interactions determine spectral properties of conjugated polymers (CP). An achievement of spatial confinement of isolated chains is one of the routes to use this feature of CP for their purposeful usage. In the present work, CP/O300 nanocomposites based on CP - poly(p-phenylenevinylene) and poly(2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene) - and silica nanoparticles (O300) are prepared. In comparison with many previously known hybrid nanomaterials synthesized with the similar purpose, CP/O300 nanocomposites are characterized by the essentially enhanced and tunable photoluminescence. The greatest change of color coordinates is observed for poly(p-phenylenevinylene)-based nanocomposites due to specific preparation method and interaction with the inorganic component. The main emission from CP in the CP/O300 nanocomposites is owing to 0-0 transitions, while 0-1 transitions, associated with aggregate states of the CP chains, are suppressed.
Chitosan, a natural polymer, is a biomaterial which is known to be osteoconductive but lacking in mechanical strength. In this work, to further enhance the mechanical property and biocompatibility of chitosan, we combined it with both chondroitin sulfate, a natural glycosaminoglycan found in bone, and nano-SiO 2. The composite scaffold of chitosan/chondroitin sulfate/nano-SiO 2 was fabricated by lyophilization. The nanocomposite scaffold showed enhanced porosity, degradation, mechanical integrity, biomineralization and protein adsorption. Biocompatibility and cell attachment-proliferation studies performed using MG-63 cells, advocate its better performance in vitro. To improve the cell seeding efficiency, we coated the scaffold surface with fibrin, which enhanced the initial cell attachment. The cumulative results suggest this novel nanocomposite scaffold to be a suitable candidate for bone tissue engineering. Copyright © 2012 American Scientific Publishers All rights reserved.. ...
TY - JOUR. T1 - Experimental evidence for reduced chain segment mobility in poly(amide)-6/clay nanocomposites. AU - Miltner, Hans E.. AU - Rahier, Hubert. AU - Pozsgay, András. AU - Pukánszky, B.. AU - Van Mele, Bruno. PY - 2005. Y1 - 2005. N2 - Poly(amide)-6/clay nanocomposites are investigated by means of modulated temperature differential scanning calorimetry. The importance of polymer-filler interaction is explored by comparing nanocomposites based on untreated and organically modified clay. During quasi-isothermal crystallization experiments, an excess contribution is observed in the recorded heat capacity signal due to reversible melting and crystallization. The magnitude of this excess contribution depends on the nanocomposite investigated. We suggest that it is directly related to the segmental mobility of the polymer chains in the interphase region. As such, the magnitude of this excess contribution can be used to quantify the efficiency of the polymer-clay interaction. Depending on ...
Strategies for bone tissue engineering and regeneration rely on bioactive scaffolds to mimic the natural extracellular matrix and act as templates onto which cells attach, multiply, migrate and function. Of particular interest are nanocomposites and organic-inorganic (O/I) hybrid biomaterials based on selective combinations of biodegradable polymers and bioactive inorganic materials. In this paper, we review the current state of bioactive and biodegradable nanocomposite and O/I hybrid biomaterials and their applications in bone regeneration. We focus specifically on nanocomposites based on nano-sized hydroxyapatite (HA) and bioactive glass (BG) fillers in combination with biodegradable polyesters and their hybrid counterparts. Topics include 3D scaffold design, materials that are widely used in bone regeneration, and recent trends in next generation biomaterials. We conclude with a perspective on the future application of nanocomposites and O/I hybrid biomaterials for regeneration of bone.
The effect of hybrid carbon fillers of multi-walled carbon nanotubes (CNT) and carbon black (CB) on the electrical and morphological properties of polystyrene (PS) nanocomposites were systematically investigated in microinjection molding (μIM). The polymer nanocomposites with three different filler concentrations (i.e. 3, 5 and 10 wt%) at various weight ratios of CNT/CB (100/0, 30/70, 50/50, 70/30, 0/100) were prepared by melt blending, then followed by μIM under a defined set of processing conditions. A rectangular mold insert which has three consecutive zones with decreasing thickness along the flow direction was adopted to study abrupt changes in mold geometry on the properties of resultant microparts. The distribution of carbon fillers within microparts was observed by scanning electron microscope, which was correlated with electrical conductivity measurements. Results indicated that there is a flow-induced orientation of incorporated carbon fillers and this orientation increased with
The current study discusses the preparation and long-term performance of polymer composites used for various purposes under different ageing conditions.. The first part deals with the preparation and characterization of polymer nanocomposites based on poly(ethylene-co-butyl acrylate) (EBA-13 and EBA-28 with 13 and 28 wt % butyl acrylate, respectively) and 2-12 wt % (0.5-3 vol %) of aluminum oxide nanoparticles (two types with different specific surface areas and different hydroxyl-group concentrations; uncoated and coated with, respectively, octyltriethoxysilane and aminopropyltriethoxysilane). The nanocomposite with EBA-13 showed better overall nanoparticle dispersion while EBA-28 resulted in poor dispersion, probably due to insufficiently high shear forces acting during extrusion mixing which were unable to break down nanoparticle agglomerates.. The activity of hindered phenolic antioxidant (0.2 wt%) in all EBA nanocomposites was assessed by determining the oxidation induction time using DSC. ...
A robust processing of polymers into antimicrobial materials is introduced using polymer/clay nanotechnology. Antimicrobial activity of commercially available organoclays modified with cationic surfactants has been screened in tests against gram-negative Escherichia coli and gram-positive Staphylococcus aureus bacteria. Despite the leaching biocidal surfactants, cell interactions with organoclay surface have been identified to be responsible for antimicrobial activity of organoclays. Distribution of clay platelets within polymer matrix by melt extrusion process resulted in polymer/clay nanocomposites active against both gram-positive and gram-negative bacteria by contact. The study discloses a much overlooked function of organoclays modified with cationic surfactants for nanocomposite application, i.e., the ability of organoclays to render polymer nanocomposites biocidal ...
The cellulose nanofibril from wood is an interesting new material constituent that can provide strong reinforcement in polymer nanocomposites due to the high stiffness of the cellulose crystals and the network formation characteristics of the nanofibrils. Cellulose nanofibrils can be used either in the form of low aspect ratio microcrystalline cellulose, MCC, or as high aspect ratio microfibrillated cellulose, MFC. The objective is to study structure-property relationships for cellulose nanofibril networks and composites.. Nanocomposites based on MCC and thermoplastic polyurethane were prepared by in-situ polymerization. The cellulose nanofibrils were successfully dispersed in the matrix and the composites showed improvements in stiffness, strength, as well as in strain-to-failure. Cellulose nanofibrils reinforce the physical rubber network by strong molecular interaction with the rubber.. A method that facilitates microfibrillation of the pulp cell wall during homogenization has been developed. ...
A general family of magnetic nanocomposites formed by FeNi3 ferromagnetic nanoparticles (NPs) embedded in a graphitized carbon matrix is reported. The soft chemical approach used relies on the catalytic effect of the NPs resulting from the thermal decomposition of the layered double hydroxide precursor, which acts as a multilayered nanoreactor enabling the formation of a range of carbon nanoforms (CNFs). This is followed by acid treatment of the as-prepared nanocomposites to isolate the different CNFs formed. These range from carbon nano-onions to graphene depending on the temperature of the thermal decomposition. This synthetic process paves the way for the rational design of metal-carbon nanocomposites with controllable composition as precursors of nanocarbons or even graphene. The coexistence of metal NPs and nanostructured carbon is a major source of applications. As a proof of concept, the electrochemical performance of these metal-carbon hybrid supercapacitors is studied under high ...
Polymer dielectric materials have many beneficial properties when it comes to energy storage for advanced electronics and power systems. While the materials are highly flexible and have good chemical stability, their main drawback is their limitation of functionality in primarily low working temperatures. In turn, this limits the wider use of polymer dielectric materials for applications such as electric vehicles and underground oil exploration.. However, researchers from Pennsylvania State University have developed a flexible, high-temperature dielectric material from polymer nanocomposites that looks promising for the application of high-temperature electronics.. The researchers, including current ECS member Lei Chen, were able to stabilize dielectric properties by crosslinking polymer nanocomposites that contain boron nitride nanosheets. In testing, the energy density was increased by 400 percent while remaining stable at temperatures as high as 300° C.. With the nanocomposites having huge ...
TY - JOUR. T1 - Water-triggered modulus changes of cellulose nanofiber nanocomposites with hydrophobic polymer matrices. AU - Dagnon, Koffi L.. AU - Shanmuganathan, Kadhiravan. AU - Weder, Christoph. AU - Rowan, Stuart J.. PY - 2012/6/12. Y1 - 2012/6/12. N2 - Biomimetic, stimuli-responsive nanocomposites were made using either poly(styrene-co-butadiene) (SBR) or polybutadiene (PBD) as the hydrophobic, low-modulus matrix and hydrophilic cellulose whiskers isolated from tunicates (TW) as the high-modulus filler. These materials were prepared using a template approach, which involves the formation of a percolating TW network and filling this template with either of the matrix polymers. Dynamic mechanical analysis (DMA) studies of the dry nanocomposite films reveal that the incorporation of TWs into the rubbery polymers increases the tensile storage modulus E′ significantly. The reinforcement is attributed to the formation of a three-dimensional TW network within the SBR and PBD matrices. The ...
Poly(methyl methacrylate) (PMMA) nanocomposites containing an organoclay and triphenyl phosphate (TPP) were prepared by solution blending using a PMMA solution in methyl methacrylate (MMA) solvent. Exfoliated nanostructures were shown by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The optical transmittance of the PMMA nanocomposites decreased with an increase in the clay content. The improvement in the thermal stability of the PMMA nanocomposites was greater in air than in nitrogen. Nanocomposite formation brought about reductions of the peak heat release rate (PHRR), as measured by cone calorimetry. The combination of the nanoclay and TPP brought about a further decrease in the PHRR and an increase in the average specific extinction area (ASEA, related to smoke production). Copyright © 2008 John Wiley & Sons, Ltd.
This review critically introduces recent results on nanocomposite materials derived from the fibrous clay silicates sepiolite and palygorskite and combined with diverse types of polymers, from typical thermoplastics to biopolymers such as polysaccharides, proteins, lipids, and nucleic acids. First, the main features of both silicates are described, emphasizing the structural and textural characteristics that determine the interaction mechanisms with organic compounds and particularly with polymers, which define the final properties of the resulting materials. The crucial role of the clay-silicate interface governing the terminal properties of the nanocomposites is especially considered. Second, this work reports and discusses different experimental approaches and preparative procedures adopted for the nanofabrication and conformation (powders, films, monoliths, foams, etc.) of nanocomposites, comparing in certain cases with analogous materials derived from layered clays instead of sepiolite or ...
RP techniques are matured manufacturing technologies widely employed in traditional industries such as automobile industry and telecommunication (phone) industry during the design process. They were first borrowed and used by the medical device industry to produce accurate models or prosthesis for surgical planning and simulation (Berry et al. 1997; Petzold et al. 1999). With the emergence and development of tissue engineering, various biomaterials and RP techniques are being investigated to specifically fabricate porous scaffolds with different architectures and properties, targeting at the regeneration of different tissues such as bone, cartilage, blood vessel, spinal cord, etc. (Lopez-Heredia et al. 2008; Xu et al. 2008; Woodfield et al. 2009; Silva et al. 2010). Furthermore, complex organ regeneration can potentially benefit from RP techniques with the fabrication/formation of functionally graded scaffolds or cell printing based on tissue spheroids (Leong et al. 2008; Mironov et al. 2009). ...
Abstract: The lithium form of taeniolite served as the molecular template for carbon nanocomposites. It was intercalated with hydroxyaluminum and hydroxyaluminum-zirconium cations. Aliquots of the inorganic matrices were saturated by furfuryl alcohol followed by its interlayer polymerization. The structures were heated at 973 K in nitrogen to carbonize the polymeric precursor. Additional materials were mixed with polypropylene glycol which was then carbonized within the mineral layers. The surface properties of the nanocomposites were studied by X-ray diffraction (XRD), DTA, SEM and sorption experiments (sorption of nitrogen). The results showed that structural properties of the derived materials depend on the inorganic matrix and organic precursor. The carbon-taeniolite nanocomposites derived from polyfurfuryl alcohol as a precursor were characterized by high carbon content and a high percentage of its surface area in micropores. A broad spectrum of surface characteristics of the final products ...
TY - JOUR. T1 - Gold Nanorod-Collagen Nanocomposites as Photothermal Nanosolders for Laser Welding of Ruptured Porcine Intestines. AU - Urie, Russell. AU - Quraishi, Sana. AU - Jaffe, Michael. AU - Rege, Kaushal. PY - 2015/9/14. Y1 - 2015/9/14. N2 - Surgical site infection and postoperative leakage are complications that may develop following colorectal surgery and result in fatal consequences. Rapid, fluid-tight wound closure through laser tissue welding (LTW) can reduce postoperative leakage and thus decrease infection. Laser tissue welding involves generation of localized heat by exposing an exogenous chromophore to near-infrared (NIR) irradiation in order to seal wounds. In this study, we generated gold nanorod (GNR)-collagen nanocomposites (NCs) for laser-facilitated welding of ruptured intestinal tissue. The fluid content, stiffness, elasticity, and laser-induced temperature response of these nanocomposites were modulated to optimize laser-induced tissue fusion and minimize tissue damage. ...
Recent studies on bone regeneration demonstrate the use of low cost and stable small molecules, which avoid the adverse effect and high cost of growth factors. Herein, we investigate the chemotactic, angiogenic and osteoinductive potential of a prostacyclin analogue, ONO-1301, when delivered through a biomim
Layered double hydroxides (LDHs) have received widespread attention for their potential applications in catalysis, polymer nanocomposites, pharmaceuticals, and sensors. Here, the mechanism underlying the physiological effects of Mg-Fe layered double hydroxide nanoparticles on the marine bacterial species Arthrobacter oxidans KQ11 was investigated. Increased yields of marine dextranase (Aodex) were obtained by exposing A. oxidans KQ11 to Mg-Fe layered double hydroxide nanoparticles (Mg-Fe-LDH NPs). Furthermore, the potential effects of Mg-Fe-LDH NPs on bacterial growth and Aodex production were preliminarily investigated. A. oxidans KQ11 growth was not affected by exposure to the Mg-Fe-LDH NPs. In contrast, a U-shaped trend of Aodex production was observed after exposure to NPs at a concentration of 10 μg/L-100 mg/L, which was due to competition between Mg-Fe-LDH NP adsorption on Aodex and the promotion of Aodex expression by the NPs. The mechanism underling the effects of Mg-Fe-LDH NPs on A. oxidans
Due to the increasing prevalence of resistance of bacteria to antibiotics and antiseptic methods, new strategies to prevent colonization of biomaterials are needed. Due to its high antimicrobial activity and relatively low toxicity to human cells, we are evaluating silver (Ag) releasing plasma polymers as a strategy to prevent bacterial colonization. Such Ag/plasma polymer nanocomposite materials, consisting of nano-scaled metal clusters embedded within a plasma-polymer matrix can be deposited using a mixed, plasma polymerization /sputtering process. For example, Ag containing plasma polymer nanocomposites are deposited employing an Ag cathode, an appropriate monomer to yield the desired material properties of the matrix (biocompatibility) and an asymmetric reactor design. The focus of this paper is a new development at Empa: a multi-functional Ag/amino-hydrocarbon (Ag/a-C:H:N) nanocomposite that can enhance cell growth and simultaneously prevent bacterial colonization at surfaces. Ag/a-C:H:N ...
Keylontic Dictionary( 2012). historical procedure: The ResearchGate on victim with your civil genes. The energy of the study thirteen( 13) by Hillel ben David.
A sago starch biopolymer with embedded silver nanoparticles has been studied as a material for the prevention of microbial growth. Approximately 8 nm in size, silver nanoparticles have been synthesized by reduction of the silver salt in aqueous solution in the presence of sago starch using sodium borohydride as a reducing agent. The obtained solutions were cast on glass plates to obtain thin supported silver-starch nanocomposite films. The morphology of the nanocomposites was investigated by scanning and transmission electron microscopy. UV-Vis absorption spectroscopy showed that during the film formation a part of the silver nanoparticles has been trapped in the water present in the sample, which enabled their partial oxidation into active Ag(+) species. The oxidation of the silver nanoparticles was confirmed by X-ray photoelectron spectroscopy. The antimicrobial activity tests have shown that the nanocomposite material can be successfully employed to prevent the viability and growth ...of the ...
Smart polymers represent a new class of advanced materials with a wide range of applications. The stimuli responsive polymers respond to external stimuli, such as heat or light, by a change of physical properties. The self-healing polymers belong to the most promising applications of a smart behavior. They are stimuli responsive and possess the ability to self-heal when damaged. The project involves the synthesis and characterization of the novel smart polymers with enhanced mechanical properties. The thermo- or photo sensitive systems and self-healing materials will be studied and reinforced by application of polymer nanocomposites. The sensitive unit is presented by physical supramolecular structures or by reversible covalent bonds containing moieties. The project will be focused on (i) study and understanding of the response mechanism to the thermo- and photo-stimuli in smart polymer nanocomposites, and on (ii) thermo- and photo induced self-healing of materials with a high mechanical ...
The book has practical examples from literature, patents, and existing commercial products. Readers can design new work based upon the material in the book or use it as a handy reference for interpreting existing work and results.
Polyvinylidene fluoride (PVDF) is employed in a wide range of devices based on its excellent mechanical, optical, high thermal, piezoelectric, pyroelectric, and ferroelectric characteristics. In the current investigation, the pristine and neodymium oxide (Nd2O3) nanoparticles embedded polyvinylidene fluoride (PVDF) thick films were prepared via solution casting method. The Nd2O3 nanoparticles were synthesized via hydrothermal technique. The functional groups were identified in the nanocomposite films via infrared vibrational spectroscopy. It revealed the presence of ferroelectric β-phase in the annealed nanocomposite films. All-important optical constants have been determined for the first time via UV-VIS transmission spectroscopy for the nanocomposite films in the ferroelectric phase.
Polymer nanocomposites are already a part of many important of worldwide businesses: automotive (molded part in cars), electronics and electrical engineering, household products, packaging industry, aircraft interiors, appliance components, security equipments. Among many nanocomposite precursors, TiO,sub,2,/sub, nanopowder is increasingly being investigated due to its special properties. ,br /,,br /, The objective of this work is to synthesize and characterize polymer-TiO,sub,2,/sub, hybrid nanocomposites. When dispersed at the nanoscale level TiO,sub,2,/sub, could act as visually transparent UV filters and high-thermomechanical-performance materials. The synthesis strategy involved two steps. Firstly, aggregated TiO,sub,2,/sub,, as received, was modified by 3-trimethoxysilyl propylmethacrylate aimed at altering its surface characteristics. The effect of modifier concentration on changing the physicochemical properties of TiO,sub,2,/sub, surface was evaluated. Size distribution of unmodified ...
Multiwalled carbon nanotube (MWNT)/BaTiO3 functional nanocomposites were fabricated via the spark plasma sintering technique. The resistivity of MWNT/BaTiO3 nanocomposites was found higher than that of MWNT-free BaTiO3 ceramics. In addition, the temperature dependence of resistivity showed abnormal metallic conductance behavior in the 1 wt. % MWNT/BaTiO3 nanocomposite. It was proposed to be due to the additional subgrain boundary between MWNT and BaTiO3 matrix, which led to transformation from an impurity-scattering mechanism to a dominant lattice-scattering mechanism in the MWNT/BaTiO3 nanocomposites as the content of carbon nanotubes increased. Based on observed unique electrical properties, bilayer ceramics stacked by one layer of MWNT-free BaTiO3 and another layer of MWNT/BaTiO3 nanocomposite were fabricated and showed excellent rectification property ...
Page contains details about methylene blue on silver/gold nanocomposite film . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
Nanomaterials can be used as nanofillers to enhance the properties of polymeric materials. However, the effect of weathering on nanocomposites and the potential for nanomaterial release is not yet well known. This stems partly from a lack of a single analytical method to assess these impacts. In this study, multiwall carbon nanotube (MWCNT) epoxy nanocomposite materials at two concentrations (3.5 % and 0.72 %) were exposed to carefully controlled UV doses (equivalent of up to ≈ 4 years in Florida). These samples were analyzed with a suite of optimized gravimetric, spectroscopic, and microscopic techniques. The presence of a MWCNT filler retarded the photodegradation of the nanocomposite samples and multiple techniques showed the accumulation of MWCNTs on the sample surface. These analytical methods will help enable a robust and informative assessment of transformations in polymer nanocomposites subject to environmental stresses.
Article A scattered data approximation tool to map single-walled carbon nanotube dispersion to the processing parameters in polymer nanocomposites. The relationship of nanocomposite dispersion to dispersion techniques and other processing parameters ...
In this study poly aryl ether ketone (PAEK) based nanocomposites containing multi walled carbon nanotubes, boron carbide and tungsten carbide nanofillers were irradiated with gamma rays of dosage 5000 kGy. These composites were prepared to estimate their potential in nuclear waste storage applications. The tensile properties, non destructive testing, rheological behavior and thermal properties of the composites were evaluated before and after gamma irradiation. The property variation after irradiation was influenced by the cross linking and chain scission of the polymer developed within the nanocomposites. In the tensile property analysis, the tensile modulus and the percentage elongation at break of all the nanocomposites were modified after gamma irradiation. Non destructive testing (NDT) showed all the samples were free from voids and cracks after gamma rays exposure. There was a slight decrease in the complex viscosity of the samples after irradiation indicating the predominance of the chain ...
Epoxy resin is widely used in high voltage apparatus as insulation. Fillers are often added to epoxy resin to enhance its mechanical, thermal and chemical properties. The addition of fillers can deteriorate electrical performance. With the new development in nanotechnology, it has been widely anticipated that the combination of nanoparticles with traditional resin systems may create nanocomposite materials with enhanced electrical, thermal and mechanical properties. In the present paper we have carried out a comparative study on dielectric properties, space charge and dielectric breakdown behavior of epoxy resin/nanocomposites with nano-fillers of SiO2 and Al2O3. The epoxy resin (LY556), commonly used in power apparatus was used to investigate the dielectric behavior of epoxy resin/nanocomposites with different filler concentrations. The epoxy resin/nanocomposite thin film samples were prepared and tests were carried out to measure their dielectric permittivity and tan delta value in a frequency ...
Epoxy resin is widely used in high voltage apparatus as insulation. Fillers are often added to epoxy resin to enhance its mechanical, thermal and chemical properties. The addition of fillers can deteriorate electrical performance. With the new development in nanotechnology, it has been widely anticipated that the combination of nanoparticles with traditional resin systems may create nanocomposite materials with enhanced electrical, thermal and mechanical properties. In the present paper we have carried out a comparative study on dielectric properties, space charge and dielectric breakdown behavior of epoxy resin/nanocomposites with nano-fillers of SiO2 and Al2O3. The epoxy resin (LY556), commonly used in power apparatus was used to investigate the dielectric behavior of epoxy resin/nanocomposites with different filler concentrations. The epoxy resin/nanocomposite thin film samples were prepared and tests were carried out to measure their dielectric permittivity and tan delta value in a frequency ...
The present invention relates to a nanocomposite blend composition having superior barrier properties, and more particularly to a nanocomposite blend composition comprising a polyolefin resin; one or more nanocomposites having barrier properties, selected from an ethylene-vinyl alcohol (EVOH)/intercalated clay nanocomposite, a polyamide/intercalated clay nanocomposite, an ionomer/intercalated clay nanocomposite, and a polyvinyl alcohol (PVA)/intercalated clay nanocomposite; and a compatibilizer. This nanocomposite blend composition has superior mechanical strength and superior barrier properties to oxygen, organic solvent, and moisture. Also, it has superior chemical barrier properties and is applicable to single/multi-layer blow molding and film processing.
The ageing behavior of novel polysiloxane nanocomposite elastomers is reported. A series of model polysiloxane nanocomposites has been prepared incorporating the montmorillonite nanoclay Cloisite 6A. The nanoclay dispersion has been characterized with X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). TGA has been utilized to study the effects of ageing on the non-oxidative stability of the nanocomposite systems. The complex evolution of volatiles that occurs during ageing has been studied using Sub-Ambient Thermal Volatilization Analysis (SATVA). Results indicate that significant chemical changes take place within the nanocomposites upon ageing; acid catalyzed hydrolysis, chain backbiting and recombination reactions are re-structuring the polymer-filler network into a more thermodynamically stable form.. ...
Highlights: • TiO{sub 2}/MMT supported monolith photo-reactor was tested for CO{sub 2} reduction with CH{sub 4}. • MMT inhibited crystal growth and enhanced TiO{sub 2} photo-activity in monolith reactor. • CO{sub 2} was reduced by CH{sub 4} to CO, CH{sub 3}OH, C{sub 2}H{sub 6}, C{sub 3}H{sub 6} and C{sub 3}H{sub 8} in a monolith reactor. • CO yield over TiO{sub 2}/MMT was 237.5 μmol g-catal.{sup −1} h{sup −1}, a 2.52 fold than TiO{sub 2}. • Stability test revealed TiO{sub 2}/MMT partially lost photo-activity in reused cyclic runs. - Abstract: In this study, the performance of montmorillonite (MMT) modified TiO{sub 2} nanocomposites for photocatalytic CO{sub 2} reduction with CH{sub 4} in a continuous monolith photoreactor has been investigated. The MMT modified TiO{sub 2} nanocomposites were dip-coated over monolith channels and were characterized by XRD, SEM, TEM, XPS, N{sub 2}-adsorption-desorption and UV-vis spectroscopy. The MMT produced anatase phase of TiO{sub 2} and reduced ...
In this article we report about the synthesis of superparamagnetic bare Fe₃O₄ nanostructures and core/shell (Fe₃O₄/alginate) nanocomposites by simple low-temperature based method at pH values 5, 9, and 14. The structural morphology and magnetic behavior of Fe₃O₄ nanostructures and core/shell (Fe₃O₄/alginate) nanocomposites (Fe₃O₄/alg NCs) have been investigated by X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy (RS), ultraviolet-visible (UV-vis) spectroscopy, transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX) and vibrating sample magnetometer (VSM). The particle size was calculated by TEM measurements and it turns out to be ∼10nm and ∼14nm for bare Fe₃O₄ nanoparticle and Fe₃O₄/alg NCs with core/shell structure, respectively. The magnetic properties of the synthesized products were found to be function of pH at which the synthesis has been done. The synthesized Fe₃O₄ nanoparticle ...
Demonstrated herein is a single rapid approach employed for synthesis of Ag-graphene nanocomposites, with excellent antibacterial properties and low cytotoxicity, by utilizing a continuous hydrothermal flow synthesis (CHFS) process in combination with p-hexasulfonic acid calix[6]arene (SCX6) as an effective particle stabilizer. The nanocomposites showed high activity against E. coli (Gram-negative) and S. aureus (Gram-positive) bacteria. The materials were characterized using a range of techniques including transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV-vis spectrophotometry, FT-IR, and X-ray powder diffraction (XRD). This rapid, single step synthetic approach not only provides a facile means of enabling and controlling graphene reduction (under alkaline conditions) but also offers an optimal route for homogeneously producing and depositing highly crystalline Ag nanostructures into reduced graphene oxide substrate.. ...
His article, titled 3D Printing Biocompatible Polyurethane/Poly(lactic acid)/Graphene Oxide Nanocomposites: Anisotropic Properties was published in ACS Applied Materials and Interfaces.. The article detailed the first 3-D printing of biocompatible polyurethane/PLA composite, which could be used for biomedical applications.. Read the article.. He gave his presentation, titled 3D Printing and High Performance Nanocomposites, at King Abdullah University of Science & Technology in Saudi Arabia.. In his talk, Advincula highlighted interest on new materials for high performance in 3-D printing. He explained how additive manufacturing is part of the digital economy that provides a new model for distributed supply chains and point production of goods.. Read the lecture abstract.. ...
Mallakpour S, Mani L, Novel polyvinylpyrrolidone nanocomposites with dispersed poly(amide-imide)/nano-ZrO2 as new nano-filler: morphology, thermal and optical properties, Polymer Bulletin, 2015. Mallakpour S, Mani L, Novel polyvinylpyrrolidone nanocomposites with dispersed poly(amide-imide)/nano-ZrO2 as new nano-filler: morphology, thermal and optical properties, Polymer
Page contains details about Texas Red-labeled DiI-loaded lipid-coated calcium phosphate nanoparticles . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
Organic-inorganic hybrid materials do not represent only a creative alternative to design new materials and compounds for academic research, but their improved or unusual features allow the development of innovative industrial applications. Nowadays, most of the hybrid materials that have already entered the Functional hybrid materials
Cardiovascular implants including bypass grafts, heart valves and stents are prone to thrombogenicity and mechanical incompatibility thus leading to limited graft patencies. Thus to overcome these issues, a nanocomposite polymer based on polyhedral oligomeric silsesquioxane (POSS) nanoparticles and poly(carbonate urea)urethane (PCU) has been developed and patented. A solvent exchange coagulation technique has been used in the fabrication of a compliant, POSS PCU graft. In addition, we present details of bonding of bioactive peptides to attract progenitor stem cells from peripheral circulating blood onto the implants and the endothelialisation potential on the lumen. Peptides are designed to enhance interactions with cell receptor integrins whilst and in-vitro and in-vivo tests are performed to determine both endothelial and platelet as well as whole blood interactions. In conclusion these results, together with its ease of manufacture and low cost, suggest that POSS-PCU nanocomposite could be an ...
Flow induced orientation of multiwalled carbon nanotubes in polycarbonate nanocomposites: rheology, conductivity and mechanical properties
Abstract: Nanocomposite chitosan-based films incorporated with drug-loaded methoxy poly(ethylene glycol)-b-poly(D,L-lactide-co-glycolide) diblock copolymers (MPEG-b-PDLLG) nanoparticles were prepared by forming drug-loaded nanoparticles in chitosan solution before suspension-solution film casting. Salicylic acid was used as a poorly-water soluble model drug. The nanocomposite films with DLL/G ratios of 100/0 and 85/15 mol% and chitosan/diblock copolymer/drug ratios of 80/1/1, 80/2/2 and 80/4/4 (w/w) were prepared and investigated. The sizes of drug-loaded nanoparticles into the chitosan films were approximate or less than 100 nm. Nanopores were observed in the resulted chitosan films incorporated with drug-loaded nanoparticles when the diblock copolymer ratio was increased up to 2. Number and size of the nanopores increased as increasing the diblock copolymer ratio. Only the nanocomposite films with chitosan/diblock copolymer/drug ratio of 80/1/1 (w/w) showed slower drug release than the ...
The encapsulation of the simple binary compound Lab within the inner cylindrical bore of a single-walled carbon nanotube (SWNT) yielded an unprecedented structure of LaI2. The filling material was encapsulated within SWNTs by heating bulk LaI3 in vacuo in the presence of SWNTs. The obtained
The nano powders of Bariumhexaferrite and zirconium oxide in different weight ratios had been prepared by sol-gel method. The formation of pure crystallized BaFe12O19 and ZrO2 nanoparticles were occurred, when the precursor were calcined at 8000C and 10000C for 3hrs. The vibrational, structural, morphological, thermal and dielectric properties have been determined by Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Thermal analysis (TG/DTA), and scalar analyzer. FTIR spectra exhibited band in the range of 473-550 cm-1 which confirmed the presence of (BaFe12O19 - ZrO2) nanoparticles. Nanoparticles of barium hexaferrite and zirconium oxide had average crystalline size between (32nm- 44nm) respectively. The SEM image revealed that powder is well crystallized and the particles are elongated hexagonal structure. The dielectric studies showed the frequency, dielectric constant and dielectric loss in the range of 11.5GHz, 24.6 and ...
Nanocomposites offer attractive and cost-effective thin layers with superior properties for antimicrobial, drug delivery and microelectronic applications. This work reports single-step plasmaenabled synthesis of polymer/zinc nanocomposite thin films via co-deposition of renewable geranium essential oil-derived polymer and zinc nanoparticles produced by thermal decomposition of zinc acetylacetonate. The chemical composition, surfaces characteristics and antimicrobial performance of the designed nanocomposite were systematically investigated. XPS survey proved the presence of ZnO in the matrix of formed polymers at 10 W and 50 W. SEM images verified that the average size of a ZnO nanoparticle slightly increased with an increase in the power of deposition, from approximately 60 nm at 10 W to approximately 80 nm at 50 W. Confocal scanning laser microscopy images showed that viability of S. aureus and E. coli cells significantly reduced on surfaces of ZnO/polymer composites compared to pristine ...
Novel sandwiched structures of cellulose nanowhiskers (CNWs) were found for the first time at the cross section of fractured starch/CNWs composite films. CNWs were obtained by hydrolysing bleached flax yarns through heating in a concentrated sulfuric acid (60 wt. %) aqueous solution at 55 °C for 60 min. Starch and starch/CNWs composite films were prepared by casting starch and mixtures of starch/CNWs homogenous aqueous suspensions, which was followed by drying at atmosphere. The CNWs layers are sandwiched within starch matrices in a parallel direction to nanocomposite film surfaces. The layer thickness increases with an increase in the content of CNWs. The discovery of novel sandwiched structures demonstrates that both the interaction and evaporation rate of the solvent can affect the dispersion and thus play important roles in the nanoparticle dispersion. Such nanocomposite films in the presence of self-assembled multi-layer structures may further improve mechanical and gas barrier properties ...
10) Alina Maria Holban, Alexandru Mihai Grumezescu, Crina Saviuc: Eco-friendly Polymer Nanocomposites. Chapter 10 - Magnetite Nanocomposites Thin Coatings Prepared by MAPLE to Prevent Microbial Colonization of Medical Surfaces, Springer, 2015 (in press).. (11) Mariana Carmen Chifiriuc, Alina Maria Holban, Carmen Curutiu, Lia- Mara Ditu, Grigore Mihaescu, Alexandra Elena Oprea, Alexandru Mihai Grumezescu and Veronica Lazar , Chapter 11: Antibiotic Drug Delivery Systems for the Intracellular Targeting of Bacterial Pathogens, in Smart Drug Delivery System, book edited by Ali Demir Sezer, ISBN 978-953-51-2247-0, Intech Open.. ...
The small angle X-ray scattering intensity curves were used to determine the average basal spacing, the size distribution of basal repeat units (stack sizes) in CSDs and estimate the volume fraction of the different basal spacings present. The intensity curves were fitted to a one-dimensional diffraction grating model similar to the one used by Pizzey et al. (2004) and van Duijneveldt et al. (2005) in their study on clay colloids, but with modifications to account for stacks with different basal spacings. The model is the same as equation 3 in Muurinen (2009) with the difference that only two different basal spacings are taken into account, with one being the hydrate state nearest to the average basal spacing calculated from the 001 reflection, the other being the nearest neighbour hydrate state with larger basal spacing. This was done in order to take into account the asymmetric tail of the 001 reflection towards lower q values due to e.g. interstratification. The statistics assumed for the ...
ORCID: 0000-0002-7970-4208 (2009) Preparation and characterisation of a novel fire retardant PET/α-zirconium phosphate nanocomposite. Polymer Degradation and Stability, 94 (4). pp. 544-549. ISSN 01413910 ...
Sonolytic design of graphene-Au nanocomposites. Simultaneous and sequential reduction of graphene oxide and Au(III) Journal Articles Refereed ...
Pentiptycene Polymer/Single-Walled Carbon Nanotube Complexes: Applications in Benzene, Toluene, and ,i,o,/i,-Xylene Detection ...
Considering the electron-phonon scattering mechanisms as well as the number of conduction channels, the long single-walled carbon nanotube (SWCNT) has larg
|p|Nanocomposites of Polyacrylic acid/polyvinylimidazole (PAA/PVI) with grafted and ungrafted iron oxide nanoparticles were prepared by a Reflux method. The Fe3O4 nanoparticles with 10 nm average diameter were synthesized by controlled co-precipitation and silanization of Si-PVI on Fe3O4 was used to obtain the grafted ones. Grafting becomes important at composites of less PVI that cause drastic decreases in AC conductivity. The content of PVI has important effects on the conductivity mechanism of these composites. The effect of grafting and Polyacrylic acid/polyvinylimidazole molar ratio on the conduction mechanism were studied. The conduction mechanism of iron oxide nanocomposites can be adjusted by changing molar ratio of Polyacrylic acid/polyvinylimidazole and grafting of Fe3O4NPs. |inline-formula||alternatives| [...] |/alternatives||/inline-formula||/p|
This work centers on hybrid materials based on MnO2-x and conducting polymers and their possible application as electrodes in rechargeable lithium batteries. We approached the study of these hybrids as an alternative to crystalline manganese oxides, which capacity is frequently limited by irreversible phase transitions. We followed the approach of forming simultaneously the organic and inorganic components in an attempt to get nanocomposite materials. PPy/MnO2-x nanocomposite hybrids were prepared by direct one-pot reaction of pyrrole and potassium permanganate, obtaining hybrids with different amounts of the inorganic phase. The results on the chemical, spectroscopic and electrochemical characterization of the PPy/MnO2-x hybrids indicated that as the MnO2-x content increases, so does the initial specific charge in lithium rechargeable cells, reaching values as high as 134 Ah/Kg. ...
Dědková, Křina.; Janíková, B.; Matějová, Křina.; Peikertová, Pína.; Neuwirthová, L.; Holešinský, J.; Kukutschová, J., 2016: Preparation, characterization and antibacterial properties of ZnO/kaoline nanocomposites
The research and development of epoxy resins/layered minerals nanocomposites during the last few years are summerized.In this paper the research progress about preparation and properties of EP/MMT,EP/LDH and EP/Graphite nanocomposites as three typical nanocomposites are introduced in detail.
Journal of Nanomaterials is a peer-reviewed, Open Access journal that aims to bring science and applications together on nanoscale and nanostructured materials with emphasis on synthesis, processing, characterization, and applications of materials containing true nanosize dimensions or nanostructures that enable novel/enhanced properties or functions. It is directed at both academic researchers and practicing engineers. Journal of Nanomaterials will highlight the continued growth and new challenges in nanomaterials science, engineering, and nanotechnology, both for application development and for basic research. All papers should emphasize original results relating to experimental, theoretical, computational, and/or applications of nanomaterials ranging from hard (inorganic) materials, through soft (polymeric and biological) materials, to hybrid materials or nanocomposites.
Solid-binding peptide linker for targeted nanocomposites. E.L.Guryev 1, L. Liang2, A. Care2, A. Sunna2, N.O. Antonova 1, V. A. Vodeneev1, V. Shipunova1,3, S.M. Deyev1,3, A. V. Zvyagin1,2. 1Laboratory of Optical Theranostics, N.I. Lobachevsky Nizhny Novgorod State University. 2 ARC Centre of Excellence BioPhotonics at Nanoscale, Macquarie University, Sydney, Australia. 3Laboratory of Molecular Immunology, Shemyakin&Ovchinnikov Institute of Bioorganic Chemistry, Moscow. E-mail: [email protected] SUMMARY. Targeted constructs for the tumours diagnosis and therapy based on photoluminescent nanoparticles are among the most rapidly developing areas of present-day biomedicine. These particles possess unique photophysical properties and their surface allows to use them as a platform for diverse targeting/therapeutic biomolecules. Upconversion nanoparticles (UCNPs) are one of the most perspective kinds of photoluminescent substances. The UNCPs are capable of efficient conversion of near-infrared ...
Majumder, D. Dutta; Karan, S. (2013). "Magnetic Properties of Ceramic Nanocomposites". Ceramic Nanocomposites. Woodhead ...
Cao, Xia; James Lee, L.; Widya, Tomy; MacOsko, Christopher (2005). "Polyurethane/clay nanocomposite foams: processing, ... Kim, Hyunwoo; Abdala, Ahmed A; MacOsko, Christopher W (2010). "Graphene/Polymer Nanocomposites". Macromolecules. 43 (16): 6515 ... and nanocomposites which includes but is not limited to: C.W. Macosko, D.R. Miller "A new derivation of postgel properties of ... "Polyurethane/clay nanocomposite foams: processing, structure and properties", Polymer, 46(3), 775-783, (2005). C.J. Ellison, A ...
Berglund, Lars (2005). "Cellulose-based nanocomposites". In A.K. Mohanty; M. Misra; L. Drzal (eds.). Natural fibers, ... Henriksson, Marielle; Lars Berglund (2007). "Structure and properties of cellulose nanocomposite films containing melamine ... Strong Nanocomposites Based on Nanocellulose-Assisted Aqueous Dispersions of Single-Wall Carbon Nanotubes". ACS Nano. 8 (3): ... "Biomimetic polysaccharide nanocomposites of high cellulose content and high toughness". Biomacromolecules. 8 (8): 2556-2563. ...
Bibcode:2019JMatS..54.7397K. doi:10.1007/s10853-019-03368-0. Thostenson, Erik; Li, C; Chou, T (2005). "Nanocomposites in ... Sanei, Seyed Hamid Reza; Doles, Randall; Ekaitis, Tyler (2019). "Effect of Nanocomposite Microstructure on Stochastic Elastic ... they do not represent microstructural features observed in scanning electron microscopy of actual nanocomposites. To ... the appropriate size and configuration of computer model to replicate the actual behavior of CNT reinforced nanocomposite. ...
May 2002). "Polypropylene/calcium carbonate nanocomposites". Polymer. 43 (10): 2981-2992. doi:10.1016/S0032-3861(02)00120-9. ...
Bilotti, Emiliano; Ma, Jia; Peijs, Ton (2010). "Preparation and properties of polyolefin/needle-like clay nanocomposites". In ... Mittal, Vikas (ed.). Advances in Polyolefin Nanocomposites. Boca Raton, FL: CRC Press. p. 336. ISBN 978-1-4398-1456-7. ...
December 2014). Handbook of Polymer Nanocomposites. Processing, Performance and Application : Volume B: Carbon Nanotube Based ...
Bone, abalone shell, nacre, and tooth enamel are all nanocomposites. As of 2010, most synthetic polymer nanocomposites exhibit ... Nanocomposites are desirable for their mechanical properties. When fillers in a composite are at the nanometer length scale, ... Completely synthetic nanocomposites do exist, however nanosized biopolymers are also being tested in synthetic matrices. ... Whiskers of collagen, chitin, and cellulose have all be used to make biological nanocomposites. The matrix of these composites ...
ZnO Nanocomposites". J. Phys. Chem. C. 117 (38): 19593-19600. doi:10.1021/jp403939p. Wu, Aide; Gu, Yuan; Tian, Huiquan; ... "Effect of alkyl chain length on chemical sensing of polydiacetylene and polydiacetylene/ZnO nanocomposites". Colloid Polym Sci ...
Njuguna, J.; Pielichowski, K.; Alcock, J. R. (2007). "Epoxy-Based Fibre Reinforced Nanocomposites". Advanced Engineering ...
Nanocomposites, and Release Studies". Comprehensive Reviews in Food Science and Food Safety. 9 (5): 552-571. doi:10.1111/j.1541 ... "Recent Advances in Biodegradable Nanocomposites". Journal of Nanoscience and Nanotechnology. 5 (4): 497-526. doi:10.1166/jnn. ... "Biodegradability of carbon nanotube/polymer nanocomposites under aerobic mixed culture conditions". Science of the Total ...
Subramanian, Vaidyanathan; Wolf, Eduardo E.; Kamat, Prashant V. (2004). "Catalysis with TiO2/Gold Nanocomposites. Effect of ...
"International Institute for Nanocomposites Manufacturing". University of Warwick. Retrieved 3 September 2014. "WMG Research ... International Institute for Nanocomposites Manufacturing (completed in 2014) WMG has strong links in China, where WMG has been ...
"Thermoelectric Power of Bismuth Nanocomposites". Physical Review Letters. 88 (21): 216801. Bibcode:2002PhRvL..88u6801H. doi: ...
Haraguchi, K. (2008). "Nanocomposite hydrogels". Current Opinion in Solid State and Materials Science. 11 (3-4): 47-54. Bibcode ... Radical polymerization also aids synthesis of nanocomposite hydrogels. These gels are made of water-swellable nano-scale clay ( ... Haraguchi, K.; Takehisa T. (2002). "Nanocomposite hydrogels: a unique organic-inorganic network structure with extraordinary ...
Utilizing layer-by-layer assembly (LbL), Kotov prepared a wide spectrum of nacre-like nanocomposites including those from clay ... Kotov's research is focused on the development of biomimetic nanocomposites, the self-assembly of nanoparticles, and chiral ... "Ultrastrong and Stiff Layered Polymer Nanocomposites". Science. 318 (5847): 80-83. Bibcode:2007Sci...318...80P. doi:10.1126/ ...
It has been used as a reinforcing agent to improve the mechanical properties of biodegradable polymeric nanocomposites for ... Graphene has been used as a reinforcing agent to improve the mechanical properties of biodegradable polymeric nanocomposites ... December 3, 2009). "Enhanced Mechanical Properties of Nanocomposites at Low Graphene Content". ACS Nano. 3 (12): 3884-90. doi: ... Aliabadi, Majid; Shagholani, Hamidreza; Yunessnia lehi, Arash (May 2017). "Synthesis of a novel biocompatible nanocomposite of ...
She was awarded a $5 million grant to create a database of polymer nanocomposites and metamaterials that will permit ... 3.0.CO;2-6,via=} Schadler, Linda (2005). "Quantitative equivalence between polymer nanocomposites and thin polymer films". ... subscription required) "Cooking up new nanocomposites". Times Union. 2013-04-29. Retrieved 2020-02-28. Walsh, Molly. "STEM Sell ...
Glass Nanocomposites: Synthesis, Properties and Applications. William Andrew. ISBN 978-0-323-39312-6. Stolten, Detlef; Emonts, ...
Nanocomposite hydrogels can mimic native tissue properties, structure and microenvironment due to their hydrated and ... Nanocomposite hydrogels or hybrid hydrogels, are highly hydrated polymeric networks, either physically or covalently ... Nanocomposite hydrogels can be engineered to possess superior physical, chemical, electrical, thermal, and biological ... Gaharwar AK, Peppas NA, Khademhosseini A (March 2014). "Nanocomposite hydrogels for biomedical applications". Biotechnology and ...
Carrow, James K.; Gaharwar, Akhilesh K. (February 2015). "Bioinspired Polymeric Nanocomposites for Regenerative Medicine". ... Gaharwar, AK; Peppas, NA; Khademhosseini, A (March 2014). "Nanocomposite hydrogels for biomedical applications". Biotechnology ... high modulus values make them useful for improving the mechanical properties of biomedical nanocomposites and nanocomposite ...
The nanocomposites developed by Brinson incorporate nanoparticles and nanotubes, and find application in several industries, ... "Liberating Data to Discover New Polymer Nanocomposites and Metamaterials". Duke Pratt School of Engineering. 2019-02-13. ... "Functionalized graphene sheets for polymer nanocomposites". Nature Nanotechnology. 3 (6): 327-331. Bibcode:2008NatNa...3..327R ...
"Bio-Inspired Approaches to Functional Nanocomposites". physicalsciences.leeds.ac.uk. Retrieved 2019-01-16. Cantaert, Bram; ...
The refractive index of a nanocomposite can be estimated as n c o m p = Φ p n p + Φ o r g n o r g {\displaystyle {n_{comp}}={\ ... The resulting nanocomposites exhibit a tunable refractive index ranging from 1.57 to 1.99. A microlens array is a key component ... The factors affecting the refractive index of a high-n nanocomposite include the characteristics of the polymer matrix, ... In order to increase optical transparency and reduce Rayleigh scattering of the nanocomposite, the diameter of the nanoparticle ...
Nanocomposite functional materials. Potential for significantly lower power consumption and extrusion force compared to ... Enables fabrication of bulk nanocomposite materials. Enables enhanced bulk properties, such as energy absorption in magnesium ... desirable crystallographic textures may also be created by the process and formation of nanocomposite structures are also ...
De Pablo, Juan J. (2011). "Coarse-Grained Simulations of Macromolecules: From DNA to Nanocomposites". Annual Review of Physical ... "Multiscale modeling and simulation of polymer nanocomposites". Progress in Polymer Science. 33 (2): 191-269. doi:10.1016/j. ...
New applications concern nanocluster and nanocomposites synthesis. The cross-linking of polymers through electron-beam ...
2010). "Imogolite Reinforced Nanocomposites: Multifaceted Green Materials". Materials. 3 (3): 1709-1745. doi:10.3390/ma3031709 ...
"LiFePO4/C Nanocomposites for Lithium-Ion Batteries". Journal of Power Sources. 343: 395-411. Bibcode:2017JPS...343..395E. doi: ...
"Directed Assembly of Hybrid Nanomaterials and Nanocomposites". Advanced Materials. 30 (18): 1705794. doi:10.1002/adma.201705794 ...
Polymer nanocomposites (PNC) consist of a polymer or copolymer having nanoparticles or nanofillers dispersed in the polymer ... "In Chang, J. Y. (ed.). Biopolymers · PVA Hydrogels, Anionic Polymerisation Nanocomposites. Advances in Polymer Science. 153. pp ... Polymer nanocomposites are important for the automotive tire industry due to the possibility of achieving a higher fuel ... December 3, 2009). "Enhanced Mechanical Properties of Nanocomposites at Low Graphene Content". ACS Nano. 3 (12): 3884-3890. doi ...
Biological Nanocomposites. Organic-Organic Nanocomposites. Inorganic-Inorganic Nanocomposites. Organic-Inorganic Nanocomposites ... Wiley-VCH, Weinheim Nanocomposites Nanocomposites covers a broad range of nanocomposites and their application in drug ... Three-Dimensional Nanostructured Nanocomposites. Hydrogel Nanocomposite Drug Carriers. Summary and Outlook. NANOCOMPOSITES FOR ... Nanocomposites covers a broad range of nanocomposites and their application in drug delivery, bioimaging and biosensing as ...
The nano-composites were submitted to a cold drawn process at three different draw ratios, λ = 3, 4, and 5, where λ is l(final ... and conductive nanocomposites. CNT modified with compatible furan groups provided nanocomposites with a relatively large ... and thermal properties of the prepared nanocomposites were examined. It was found that the nanocomposites exhibited strong ... Transparent Pullulan/Mica Nanocomposite Coatings with Outstanding Oxygen Barrier Properties by Ilke Uysal Unalan , Derya Boyacı ...
Nanomaterials - be they in the form of particles, wires or tubes - exhibit unique physical properties: electronic properties that are dominated by quantum effects; higher mechanical strength and, most obviously, a very high specific surface area. Empa has extensive competences and excellent facilities for the synthesis of nanoparticles, nanocrystals, nanofibers and carbon nanotubes in lab- and pilot-scale batches. By flame spray synthesis (FSS) we are producing oxide nanoparticles such as silica, titania, zirconia, perovskites, various types of mixed oxides and composite particles with well-defined composition and morphology. Non-oxide nanoparticles like carbides and nitrides are produced out of solid precursors using the inductively coupled vacuum plasma process (ICP). With such an ICP facility we also produce silicon nanoparticles in larger quantities. Nanofibers of various compositions can be produced by electrospinning, nearly monodisperse metal and semiconductor nanocrystals with diameters ...
Processing of polymer nanocomposites usually requires special attention since the resultant structure-micro- and nano-level, is ... Processing of polymer nanocomposites usually requires special attention since the resultant structure-micro- and nano-level, is ... Polymer nanocomposites nano-additive chemistry electrospinning polymer blends structures Nanoparticle synthesis ... A brief overview on nanoclay and nanoclay-containing polymer nanocomposites is provided in third chapter. The fourth chapter ...
... nanocomposites and their applications, and discusses the incorporation of natural and inorganic nanoparticles ... ... This volume serves as a cutting edge reference on XLPE based blends, nanocomposites, and their applications. The book provides ... Crosslinkable Polyethylene Based Blends and Nanocomposites. Editors: Thomas, Jince, Thomas, Sabu, Ahmad, Zakiah (Eds.) ... Research Developments in XLPE Nanocomposites and Their Blends: Published Papers, Patents, and Production ...
The physical and chemical natures determining the electrical and thermal properties of polymer nanocomposites are discussed in ... on the fundamental principles and recent progress in the field of electrical and thermal properties of polymer nanocomposites. ... Introduces emerging polymer nanocomposites - from common organic and inorganic polymer nanocomposites to low-dimension carbon ... Polymer-Clay Nanocomposites: A Novel Way to Enhance Flame Retardation of Plastics and Applications in Wire and Cable Industry ...
Cellulose nanomaterials review: structure, properties and nanocomposites.. Moon RJ1, Martini A, Nairn J, Simonsen J, Youngblood ...
Purchase Multifunctional Polymeric Nanocomposites Based on Cellulosic Reinforcements - 1st Edition. Print Book & E-Book. ISBN ... Multifunctional Polymeric Nanocomposites Based on Cellulosic Reinforcements 1st Edition. 0 star rating Write a review ... Multifunctional Polymeric Nanocomposites Based on Cellulosic Reinforcements introduces the innovative applications of polymeric ... She is author of 74 scientific publications (h=19) in the field of polymeric composites and nanocomposites. ...
Polymer-Layered Silicate Nanocomposites with Conventional Flame Retardants.. Nanocomposite Technology for Enhancing the Gas ... Modeling the Phase Behavior of Polymer-Clay Nanocomposites.. Rheological Properties of Polymer-Layered Silicate Nanocomposites. ... Structural Characterization of Polymer-Layered Silicate Nanocomposites.. New Conceptual Model for Interpreting Nanocomposite ... Polymer-Clay Nanocomposites presents the first comprehensive overview of the state of the art of these materials since they ...
... Guest Editors: Bin Li, Nazanin Emami, Guan Gong, and ... Applications of Nanomaterials in Multifunctional Polymer Nanocomposites, Bin Li, Nazanin Emami, Guan Gong, and Weidong Song ... Green Synthesis, Characterization, and Antibacterial Activity of Silver/Polystyrene Nanocomposite, Manal A. Awad, W. K. ...
The photocatalytic performance of Cu,sub,2,/sub,O-TiO,sub,2,/sub, nanocomposites was evaluated by the degradation of methyl ... The experimental results showed that the prepared Cu,sub,2,/sub,O-TiO,sub,2,/sub, nanocomposite exhibited higher photocatalytic ... nanocomposites were successfully synthesized by the homogeneous hydrolysation, followed by the solvothermal crystallization and ... Nanocomposites. Longfeng Li1 and Maolin Zhang. 1. 1School of Chemistry and Materials Science, Huaibei Normal University, ...
This book also discusses the extensive research developments for next generation nanocellulose-based polymer nanocomposites. ... thermal and mechanical investigation of nanocellulose based polymer nanocomposites -Provides elementary information and rich ... Different characterization of nanocellulosic materials and their respective polymer nanocomposites -Physico-chemical, ...
Cu2O/Bi5O7I nanocomposites were prepared by a facile thermal decomposition process and chemical reduction route. The structures ... Y.M. Xia, Z.M. He, J.B. Su, Y. Liu, B. Tang, Fabrication and photocatalytic property of novel SrTiO3/Bi5O7I nanocomposites. ... Z.M. Cui, H. Yang, X.X. Zhao, Enhanced photocatalytic performance of g-C3N4/Bi4Ti3O12 heterojunction nanocomposites. Mater. Sci ... Z.M. He, Y.M. Xia, B. Tang, X.F. Jiang, J.B. Su, Fabrication and photocatalytic property of ZnO/Cu2O core-shell nanocomposites ...
Most conventional polymer nanocomposites contain particles 10-50 nm in diameter. Tomorrow, novel polymer nanocomposites may ... The ORNL-led study compared polymer nanocomposites containing particles 1.8 nm in diameter and those with particles 25 nm in ... The title of the paper is "Big Effect of Small Nanoparticles: A Shift in Paradigm for Polymer Nanocomposites." ... OAK RIDGE, Tenn., March 8, 2017-Polymer nanocomposites mix particles billionths of a meter (nanometers, nm) in diameter with ...
Conducting polymer metal nanocomposites are.[clarification needed] In past years,[when?] polymers were known so far as a class ... were used and different type of nanostructures such as nanofibers, spherical, one-dimensional nanocomposites and they are used ... Lu, Xiaofeng; Wanjin Zhanga; Ce Wanga; Ten-Chin Wenb; Yen Weic (May 2011). "One-dimensional conducting polymer nanocomposites: ... Hanisch, C; A Kulkarni; V Zaporojtchenko; F Faupel (4 April 2008). "Polymer-metal nanocomposites with 2-dimensional Au ...
Functional Polymer Blends and Nanocomposites A Practical Engineering Approach Edited By Gennady E. Zaikov. , Liliya I. Bazylyak ...
... new applications of polymer nanocomposites. Polymer nanocomposites may be tailored for properties such as enhanced thermal and ... The behavior of a polymer nanocomposite is dictated by the characteristics of the interfaces present in these materials, the ... In addition to the multifunctional nature of these materials, adaptive / smart nanocomposites which respond to external stimuli ... This session invites contributions exploring innovations in 1) synthesis and processing of polymer nanocomposites, (2) ...
This session addresses nanoscale phenomena in polymeric systems. We accept experimental and theoretical contirbutions, as well as atomistic computer simulation studies.. ...
Nanocomposite is a multiphase solid material where one of the phases has one, two or three dimensions of less than 100 ... The idea behind Nanocomposite is to use building blocks with dimensions in nanometre range to design and create new materials ... The mechanical, electrical, thermal, optical, electrochemical, catalytic properties of the nanocomposite will differ markedly ...
9781260132311 Our cheapest price for Polymer Nanocomposites: Processing, Characterization, and Applications, is $112.50. Free ... 6.4 Thermoset-Based Nanocomposites 6.4.1 Epoxy Nanocomposites 6.4.2 Special Types of CNT-Based Thermoset-Based Nanocomposites ... 7.4 Thermoset-Based Nanocomposites 7.4.1 Epoxy Nanocomposites 7.4.2 Thermal Conductivity of Epoxy-Based Nanocomposites 7.4.3 ... 9.3 Polymer Nanocomposite Review 9.3.1 Thermoplastic Nanocomposite Studies 9.3.2 Polymer-Clay Nanocomposite Studies 9.3.3 EPDM ...
In an effort to tackle this issue, we report the use of novel Soluplus®-based nanocomposites, prepared from emulsion templates ... The nanocomposite powders were all x-ray amorphous with no crystalline peaks of the drugs at all. This is in coherence with the ... In an effort to tackle this issue, we report the use of novel Soluplus®-based nanocomposites, prepared from emulsion templates ... This could be because the drug-polymer interactions substitute the polymer-polymer interactions in the nanocomposites, thus ...
22.4 Styrene-co-Butadiene Rubber/Organoclay Nanocomposites.. 23 Theoretical Modeling and Simulation of Rubber Nanocomposites ( ... 12 Mechanical Properties of Rubber Nanocomposites: How, Why . . . and Then? (L. Chazeau, C. Gauthier and J.M. Chenal). ... 17 Wide-Angle X-ray Diffraction and Small-Angle X-ray Scattering Studies of Rubber Nanocomposites (Valerio Causin). ... Organoclay Nanocomposites (K.M. Sukhyy, E.G. Privalko, V.P. Privalko and M.V. Burmistr). ...
IMAGE: A calcium phosphate nanocomposite filling in a tooth. The nanocomposite can "smartly " release decay-fighting agents to ... New nanocomposites may mean more durable tooth fillings. National Institute of Standards and Technology (NIST) ...
Purchase New Horizons of Nano Fillers and Their Enhanced Nanocomposites - 1st Edition. Print Book & E-Book. ISBN 9780081025444 ... Nanoindentation in Nanocomposite Research. Part 4. Health and Safety of Polymer Nanocomposite Technology. 4.1. Cytotoxicity of ... 2.1 Clay/Polymer Nanocomposites in Antimicrobial Application. 2.2 Graphene and Its Derived Filler/Polymer Nanocomposites for ... Part 5. Prospect of Polymer Nanocomposites for Future Applications. 5.1. The Prospect of Polymer Nanocomposites for ...
2015 by Jenny Stanford Publishing This book focuses on polymer-clay nanocomposite materials. It introduces readers to polyme ... Types of polymer-clay nanocomposites: preparation of polymer-clay nanocomposites Characterization of polymer-clay ... It is an excellent source of knowledge in the field of polymer-clay nanocomposites and can be used by scientists, researchers, ... This book focuses on polymer-clay nanocomposite materials. It introduces readers to polymers, clays, and organo-clay and ...
His research interests include polymer nanocomposites, bio-nanocomposites and rubber based nanocomposites, fire retardant ... 3.2 Preparation Methods of Soy Protein Nanocomposites 41. 3.3 Properties of Thermoplastic Soy Protein Nanocomposites 43. 3.4 ... 4.5 Applications of Soy Protein-Based Nanocomposites 90. 4.6 Conclusion 92. References 93. 5 Biomedical Applications of Soy ... John Wiley & Sons Soy Protein-Based Blends, Composites and Nanocomposites This book discusses soy protein nanoparticle-based ...
  • After defining nanoparticles and polymer nanocomposites and discussing environmental aspects, the second chapter focuses on the synthesis and functionalization of nanomaterials with applications in polymers. (springer.com)
  • But the conducting polymers metal nanocomposites allow for more efficient applications than their bulk counterparts. (wikipedia.org)
  • March 8, 2017-Polymer nanocomposites mix particles billionths of a meter (nanometers, nm) in diameter with polymers, which are long molecular chains. (ornl.gov)
  • This book presents important aspects regarding the classification, characterization techniques, synthesis, and reactions of polymers and clays and addresses the synthesis procedures to obtain polymer-clay nanocomposites and their respective application range. (routledge.com)
  • The new approach to making nanocomposites can also be applied to biocompatible polymers and could be used to make stents and other biomedical devices, McKinley said. (medgadget.com)
  • Still, the role of polymer chemistry (pure and applied sciences) is very prominent in the world of science today, but it is heading away from polymers and polymer blends towards composites and nanocomposites. (novapublishers.com)
  • Mankind used to live in the Stone Age, then the Iron Age, then the Bronze Age, and now it has come to be the Age of Polymers (leaning heavily towards composites and nanocomposites. (novapublishers.com)
  • S. S. Bhagawan and Dr. Meera Balachandran, "Approaches in Modeling Properties of Polymer Nanocomposites", Proceedings of Second International Conference on Natural Polymers, Bio-polymers, Bio-Materials, their composites, Blends, IPNs and Gels Polyelectrolytes and Gels: Macro to Nano Scales (ICNP-2010). (amrita.edu)
  • Nanocomposites of polymer/clay have had much attention in recent years, particularly those developed with layered silicates due to the need of engineering materials more efficient than pure polymers for certain applications. (scielo.br)
  • In recent years there has been much attention given to polymer-clay nanocomposites, particularly those developed with layered silicates due to the need of more efficient engineering materials, and because of the fact that pure polymers do not present the properties needed for certain applications. (scielo.br)
  • Several polymers have been used in the preparation of polymer-clay nanocomposites, such as polystyrene, polyamide 6 and 66, polycarbonate, polyolefins, etc 13 . (scielo.br)
  • Polymer nanocomposites are a recent alternative to conventionally filled polymers. (scirp.org)
  • However, there are some challenges to overcome in relation to the use of cellulose-based nanofillers in polymers to produce nanocomposites in order to achieve good performance, including the efficient dispersion of particles in the matrix, the compatibility of nanoreinforcement in the matrix and the development of suitable methods for the processing of these materials. (scirp.org)
  • This review critically introduces recent results on nanocomposite materials derived from the fibrous clay silicates sepiolite and palygorskite and combined with diverse types of polymers, from typical thermoplastics to biopolymers such as polysaccharides, proteins, lipids, and nucleic acids. (csic.es)
  • Strategies for the synthesis, such as self assembly and genetical engineering of nanocomposites, are discussed in detail. (wiley-vch.de)
  • The key features of the book are: -Synthesis and chemistry of nanocellulose from different biorenewable resources -Different characterization of nanocellulosic materials and their respective polymer nanocomposites -Physico-chemical, thermal and mechanical investigation of nanocellulose based polymer nanocomposites -Provides elementary information and rich understanding of the present state-of- art of nanocellulose-based materials -Explores the full range of applications of different nanocellulose-based materials. (recordedbooks.com)
  • various methods such as one-pot synthesis, in situ synthesis, sonochemical synthesis etc. were used and different type of nanostructures such as nanofibers, spherical, one-dimensional nanocomposites and they are used in potential applications such as sensoric and electrochromic devices. (wikipedia.org)
  • This session invites contributions exploring innovations in 1) synthesis and processing of polymer nanocomposites, (2) theoretical developments improving our understanding of these systems, and (3) new applications of polymer nanocomposites. (aiche.org)
  • A well-structured and easy-to-read book that follows the logical sequence of materials science, synthesis-characterization-practical application, and an excellent reference for those interested in getting a general overview of the fascinating polymer-clay nanocomposites with enhanced properties with respect to pure inorganic and organic solids and whose practical applications cover diverse areas. (routledge.com)
  • A postdoctoral associate/research scientist position in the area of advanced synthesis and characterization of materials and nanocomposites is available at Rice University. (imechanica.org)
  • This book provides a single comprehensive source of information about one of the most important facets of polymer nanocomposites technology: synthesis in emulsion and suspension. (rsc.org)
  • Electrochemical synthesis of CeO2 and CeO2/montmorillonite nanocomposites. (unt.edu)
  • Novel silver/silver halide nanocomposite materials were produced by forming silver/silver halide nanoparticles in the polymer support materials of nylon 6,6 and polyurethane, through the development of a simple aqueous synthesis method followed by UV light exposure. (techconnectworld.com)
  • Al E, Gűҫlű G, Íyim TB, Emik S, Özgűműş S (2008) Synthesis and properties of starch-graft-acrylic acid/Na-montmorillonite superabsorbent nanocomposite hydrogels. (springer.com)
  • Boruah M, Mili M, Sharma S, Gogoi B, Dolui SK (2015) Synthesis and evaluation of swelling kinetics of electric field responsive poly(vinyl alcohol)-g-polyacrylic acid/OMNT nanocomposite hydrogels. (springer.com)
  • Chen P, Xu S, Wu R, Wang J, Gu R, Du J (2013) A transparent Laponite polymer nanocomposite hydrogel synthesis via in-situ copolymerization of two ionic monomers. (springer.com)
  • This book introduces readers to nanomaterials and polymer nanocomposites processing. (springer.com)
  • Cellulose nanomaterials review: structure, properties and nanocomposites. (nih.gov)
  • One possible solution is to provide a skeleton that can hold the individual nanomaterials together and thus construct functional bulk nanocomposites, just like the steel reinforcing bars in reinforced concrete. (phys.org)
  • A new class of nanomaterials, namely microbiologically-formed nanorods composed of elemental tellurium [Te(0)] that forms unusual nanocomposites when combined with poly(m-phenylenevinylene-co-2,5-dioctoxy-phenylenevinylene) (PmPV) is described. (usgs.gov)
  • The book then moves on to discussing the different types of blends, composites and nanocomposites with their type of polymer matrixes such as thermoplastics, thermoset, natural rubbers and synthetic rubbers. (wiley-vch.de)
  • In the last few years, great attention has been paid to the preparation of polypropylene (PP) nanocomposites using carbon nanotubes (CNTs) due to the tremendous enhancement of the mechanical, thermal, electrical, optical and structural properties of the pristine material. (mdpi.com)
  • However, it is well-known that the properties of polymer-based nanocomposites strongly depend on the dispersion of nanofillers and almost all the discussed properties of PP/CNTs nanocomposites are strongly related to their microstructure. (mdpi.com)
  • PP/CNTs nanocomposites were, mainly, prepared by melt mixing and in situ polymerization. (mdpi.com)
  • Young's modulus, tensile strength and storage modulus of the PP/CNTs nanocomposites can be increased with increasing CNTs content due to the reinforcement effect of CNTs inside the polymer matrix. (mdpi.com)
  • Furthermore, it was found that CNTs can act as nucleating agents promoting the crystallization rates of PP and the addition of CNTs enhances all other physical properties of PP. The aim of this paper is to provide a comprehensive review of the existing literature related to PP/CNTs nanocomposite preparation methods and properties studies. (mdpi.com)
  • Nanocomposite systems, including those reinforced with CNTs, have been extensively studied since the 1990s and, accordingly, there has been a steady and continuous increase in the number of publications on the subject, including reviews from time to time 2,12-35 . (scielo.br)
  • Different formulations of nanocomposites consisting of modified Polyvinylidene difluoride (PVDF) and modified CNTs e.g. (bl.uk)
  • Dynamic mechanical analysis was conducted in order to study the effect of CNTs on storage modulus of nanocomposites. (bl.uk)
  • Overall, PMMA-g-CNTs based PVDF nanocomposites with a 10 wt% CNT loading showed 20%, 30% and 60% improvement in tensile, compressive and flexural modulus as compared to PVDF nanocomposite containing 10 wt% CNT loading. (bl.uk)
  • However, further addition of CNTs adversely effected the fibre impregnation by nanocomposite matrix, due to processing issues such as high viscosity of nanocomposites at higher CNT contents, resulting in poor mechanical performance. (bl.uk)
  • Thanks to the uniform distribution of NBBs in the biosynthesized nanocomposites, researchers were able to tune the content of carbon nanotubes (CNTs) in a wide range from 1.5 wt% to 75 wt% by changing the concentration of CNTs suspensions. (phys.org)
  • Note that the conventional fabrication method for CNTs nanocomposites that requires the mixing of CNTs dispersions with polymer solutions is only applicable to prepare polymer nanocomposites with low CNTs ( (phys.org)
  • To further demonstrate the advantages of the biosynthesis strategy for preparing mechanically reinforced nanocomposites, CNTs/BC nanocomposite films were also prepared for comparison by blending of CNTs and disintegrated BC suspensions. (phys.org)
  • Both the tensile strength and Young's modulus of the biosynthesized CNTs/BC nanocomposites were remarkably higher than that blended samples. (phys.org)
  • As a result, the biosynthesized CNTs/BC nanocomposites achieve an extremely high mechanical strength and electrical conductivity , which is of crucial importance for practical application.nanocomposites. (phys.org)
  • f, Comparison of the tensile strength of the biosynthesized CNTs/BC nanocomposites with blended CNTs/BC nanocomposites. (phys.org)
  • The environmental fate and impact of polymer nanocomposites (PNCs) containing carbon nanotubes (CNTs) will depend upon their interactions with microorganisms, with implications for the antimicrobial properties and long term persistence of PNCs. (nist.gov)
  • Using oxidized single-walled (O-SWCNT) and multi-walled CNTs (O-MWCNT), we have explored the influence that CNT loading (mass fraction ≤ 0.1% - 10%) and type have on the initial interactions of Pseudomonas aeruginosa with CNT/polyvinyl alcohol (PVOH) nanocomposites containing well-dispersed CNTs. (nist.gov)
  • In spite of this growth, the majority of the reviews describe the current status of only one type of nanocomposite. (scielo.br)
  • The fifth chapter is dedicated to the polymer nanocomposites processing technologies, among which electrospinning, which has very exciting applications ranging from medical to filtration. (springer.com)
  • The last chapter provides an overview on how melt-processing strategy impact structure and mechanical properties of polymer nanocomposites by taking polypropylene-clay nanocomposite as a model system. (springer.com)
  • When a team led by the Department of Energy's Oak Ridge National Laboratory tried to verify that shrinking the nanoparticle size would adversely affect the mechanical properties of polymer nanocomposites, they got a big surprise. (ornl.gov)
  • Thermoplastic nanocomposites incorporating DNM exhibit improvements in mechanical properties, high-temperature performance, barrier properties and processing characteristics, according to DuPont. (nanotech-now.com)
  • However actual mechanical properties of polymer nanocomposites (i.e. green nanocomposites) reinforced by the cellulose nanofiber are much lower than expected. (witpress.com)
  • In this study, we intended to improve the mechanical properties of polymer nanocomposites by controlling the orientation of cellulose nanofiber. (witpress.com)
  • However, the conventional process of BC nanocomposites fabrication requires the disintegration of such a 3-D network structure, which seriously impairs the mechanical properties of the constructed nanocomposites. (phys.org)
  • The interest in studying cellulose-based nanocomposite is due to the abundance, renewable nature, and outstanding mechanical properties of this nanoparticle. (scirp.org)
  • Furthermore, the addition of cellulose-based nanofillers promotes a better performance of the nanocomposite in relation to their barrier, thermal and mechanical properties among others. (scirp.org)
  • We carry out extensive characterization of the nanocomposite using transmittance spectra (transparency), conductive atomic force microscopy (conductivity), contact-resonance force microscopy (mechanical properties), and SEM combined with a variety of stress-strain AFM experiments and AFM numerical simulations (internal structure). (nist.gov)
  • Multifunctional Polymeric Nanocomposites Based on Cellulosic Reinforcements introduces the innovative applications of polymeric materials based on nanocellulose, and covers extraction methods, functionalization approaches, and assembly methods to enable these applications. (elsevier.com)
  • The materials, known as polymeric nanocomposites, are weaving a web of interest for use in packaging materials, tear-resistant fabrics and biomedical devices. (nextbigfuture.com)
  • Polymeric nanocomposites are hybrid materials where inorganic nanosized substances are dispersed in a polymer matrix 2-3 . (scielo.br)
  • In recent years, several studies have been performed using nanocellulose as a component in polymeric nanocomposites. (scirp.org)
  • The preparation, architecture, characterisation, properties and application of polymer nanocomposites are discussed within some 25 chapters. (waterstones.com)
  • The physical and chemical natures determining the electrical and thermal properties of polymer nanocomposites are discussed in detail. (springer.com)
  • The Cu 2 O-TiO 2 nanocomposites were successfully synthesized by the homogeneous hydrolysation, followed by the solvothermal crystallization and ethylene glycol-thermal reduction process, respectively. (hindawi.com)
  • In this study, using the ethylene glycol as the solvent and the reducing agent, and titanium tetrabutoxide and Cu (II) acetate as precursors, the Cu 2 O-TiO 2 nanocomposite was successfully synthesized by the homogeneous hydrolysation, followed by the solvothermal crystallization treatment and the ethylene glycol-thermal reduction reaction, respectively. (hindawi.com)
  • Cu 2 O/Bi 5 O 7 I nanocomposites were prepared by a facile thermal decomposition process and chemical reduction route. (springer.com)
  • Polymer nanocomposites may be tailored for properties such as enhanced thermal and mechanical stability, damping characteristics, thermal and electrical conductivity, permeability, biodegradability and fire retardance, to name just a few. (aiche.org)
  • The various processing methods for nanocomposites and their mechanical, thermal properties, barrier properties are then discussed. (wiley-vch.de)
  • Polymer nanocomposites containing carbon nanoparticles have exhibited remarkable thermal, mechanical and electrical properties. (intechopen.com)
  • Such nanocomposites present improvement on mechanical, thermal, flammability and dimensional stability properties, using low concentrations of silicate, around 1-5% by weight 4 . (scielo.br)
  • From the surveys conducted by the Toyota group which developed polyamide 6 nanocomposites using small amounts of montmorillonite clay and obtained a significant increase in mechanical and thermal properties, several other studies have been conducted in order to achieve synergy among the parts 5,6-12 . (scielo.br)
  • The book provides an introduction to XLPE nanocomposites and discusses the incorporation of natural and inorganic nanoparticles in the XLPE matrix. (springer.com)
  • Polymer-Clay Nanocomposites is an indispensable text for polymer scientists, composites formulators, materials engineers, resin producers, filters and additive producers as well as university lecturers, and organic and inorganic chemists working in this important and fascinating area. (wiley.com)
  • Polymer nanocomposites revolutionized research in the composites area by achieving the nanoscale dispersion of the inorganic filler (clay platelets) in the polymer matrices after suitable surface modifications of the filler phase. (rsc.org)
  • This volume serves as a cutting edge reference on XLPE based blends, nanocomposites, and their applications. (springer.com)
  • Rubber Nanocomposites: Preparation, Properties and Applications focuses on the preparation, characterization and properties of natural and synthetic rubber nanocomposites. (wiley.com)
  • The book also examines the applications of rubber nanocomposites in various engineering fields, which include tyre engineering. (wiley.com)
  • The book also examines the current state of the art, challenges and applications in the field of rubber nanocomposites. (wiley.com)
  • Covers the various aspects of preparation, characterization, morphology, properties and applications of rubber nanocomposites. (wiley.com)
  • New Horizons of Nano Fillers and Their Enhanced Nanocomposites: Applications, Health and Safety and Future Prospects not only covers innovative applications on the topic, it also addresses issues concerning nanocomposite materials in both industry and the academic community, mainly health and safety concerns in the application of these materials, along with future prospects for these materials in comparison with traditional fibers and filler enhancement materials. (elsevier.com)
  • The text then covers the preparation of polymer-clay nanocomposites and their characterization, properties, performance, and applications. (routledge.com)
  • The primary goal of this book is to aid readers who wish to engage in the research and development of polymer-clay nanocomposites and to offer them an overview of the commonly used polymer-clay nanocomposites and their origins, manufacture, properties, and potential applications. (routledge.com)
  • As Michael Famulok and his team from the University of Bonn, Germany, explain in the journal Angewandte Chemie , this gap is a place to attach other molecules that have the potential to transform the rings into versatile nanocomposites for various applications. (phys.org)
  • The paper reviews the processing advantages and challenges of microcellular injection molding and presents recent research results on applications of nanocomposites and woodfiber-plastic composites as well as new process develop for the microcellular injection molding process. (usda.gov)
  • This book introduces a variety of basic sciences and applications of the nanocomposites and heterostructures of functional oxides. (abebooks.com)
  • The present invention provides for the composition, method of preparing and method of using a nanocomposite in dental applications. (google.es)
  • The use of the nanocomposite in dental applications substantially influences the dental products strength, durability, longevity, barrier properties and other desirable. (google.es)
  • Polymer Nanocomposites for Advanced Engineering and Military Applications. (igi-global.com)
  • In N. Ramdani (Ed.), Polymer Nanocomposites for Advanced Engineering and Military Applications (pp. 254-294). (igi-global.com)
  • In this unified overview the three types of matrix nanocomposites are presented underlining the need for these materials, their processing methods and some recent results on structure, properties and potential applications, perspectives including need for such materials in future space mission and other interesting applications together with market and safety aspects. (scielo.br)
  • Being environmentally friendly, applications of nanocomposites offer new technology and business opportunities for several sectors of the aerospace, automotive, electronics and biotechnology industries. (scielo.br)
  • The second volume looks at the properties and characterization of cellulose, chitosan, furanic, starch, wool and silk nanocomposites and the potential industrial applications of natural polymer nanocomposites. (zvab.com)
  • We think this could lead to a faster, better, cheaper way of making a class of nanocomposite materials with pretty exciting applications," he added. (nanowerk.com)
  • Furthermore, the morphological properties of electrospun nanofiber-reinforced polymer nanocomposites are correlated with the structural properties along with their performance and applications. (springer.com)
  • His present research efforts are directed toward the development of novel nanocomposite materials for applications in solid-state lighting, direct conversion of heat to electrical power, and thermoelectric refrigeration (see https://engineering.purdue.edu/MSE/Turner for more information). (nanohub.org)
  • Automotive parts, packaging and electronics were the main nanocomposite applications on a worldwide basis in 2013, with 51.4%, 22.5% and 13.8% of the market. (prweb.com)
  • By upgrading the state-of-the-art production line that produces pure bacterial cellulose pellicles, industrial-scale production of these bulk nanocomposite materials for practical applications can be expected in the near future. (phys.org)
  • The aim of this review is to present the fundamental concepts about nanocellulose, such as its structural aspects, production methods and current trends in classification, and the main aspects about cellulose-based nanocomposites, including the progress that has been reached in relation to their compatibilization, production, final properties and potential applications. (scirp.org)
  • The fabrication of nanocomposite structures through additive manufacturing is extremely promising for a myriad of applications such as tissue engineering scaffolds 6,7 and liquid 8 or strain sensors. (sigmaaldrich.com)
  • Details on nanocomposites that are in commercial use or under development, associated technologies, and relevant applications. (bccresearch.com)
  • Worcester, Mass. - A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used in a variety of applications, including microscopic actuators and grippers for surgical robots, light-powered micro-mirrors for optical telecommunications systems, and more efficient solar cells and photodetectors. (eurekalert.org)
  • These wood based nanocomposites can also be completely carbonized to yield carbon-magnetite nanocomposites with P removal capability and for more selected applications such as odor suppression and oil recovery following an oil spill. (sbir.gov)
  • Global consumption of nanocomposites is expected to grow in unit terms from nearly 225,060 metric tons in 2014 to nearly 584,984 metric tons in 2019, a compound annual growth rate (CAGR) of 21.1% for the period of 2014 to 2019. (bccresearch.com)
  • The authors describe the range of traditional and emerging polymer nanocomposites from nanoparticle and polymer composites to novel nanostructure based polymer nanocomposites. (springer.com)
  • The ability to encapsulate linear nanoparticle chains in scrolled nanosheets is an important advance in the formation of nanocomposites. (nsti.org)
  • The maximum actuation deformation of the nanocomposite films increased exponentially with increasing nanoparticle concentration. (techbriefs.com)
  • However, obtaining nanocomposites based on nanocellulose, with optimal properties, requires good nanoparticle dispersion in the polymeric matrix. (scirp.org)
  • The market share for the clay nanocomposite category is expected to increase to 60.2% by 2019. (prweb.com)
  • Nanocomposites with the greatest commercial potential through 2019. (bccresearch.com)
  • Global nanocomposite market trends from 2013 to 2019. (bccresearch.com)
  • Electro-triggering recovery of a microcantilever made from the CNP/PS shape memory nanocomposite was has been demonstrated and the recovery rates were studied as a function of applied voltage. (ingentaconnect.com)
  • We show that torsionally stiffened shape memory nanocomposite fibers can be transformed upon insertion of twist to store and provide fast and high-energy rotations. (sciencemag.org)
  • The twisted shape memory nanocomposite fibers combine high torque with large angles of rotation, delivering a gravimetric work capacity that is 60 times higher than that of natural skeletal muscles. (sciencemag.org)
  • A method of synthesizing carbon-magnetite nanocomposites. (osti.gov)
  • lignosulfonate to form a fourth solution with a first pH level, (f) heating the fourth solution at a third temperature for a second duration of time to form a first sample, and (g) subjecting the first sample to a microwave radiation for a third duration of time effective to form a second sample containing a plurality of carbon-magnetite nanocomposites. (osti.gov)
  • In addition to the multifunctional nature of these materials, adaptive / smart nanocomposites which respond to external stimuli in a controlled, reproducible manner represent an interesting new emerging technology. (aiche.org)
  • The high aspect ratio of delaminated MXene renders it promising nanofiller in multifunctional polymer nanocomposites. (pnas.org)
  • Zhang received $216,342 from the Canada Foundation for Innovation (CFI) today (Dec. 16) to further develop technologies using multifunctional nanocomposites. (nanotech-now.com)
  • aims to bring together leading academic scientists, researchers and research scholars to exchange and share their experiences and research results on all aspects of Multifunctional Polymer Nanocomposites and Materials Science. (waset.org)
  • Also, high quality research contributions describing original and unpublished results of conceptual, constructive, empirical, experimental, or theoretical work in all areas of Multifunctional Polymer Nanocomposites and Materials Science are cordially invited for presentation at the conference. (waset.org)
  • ICMPNMS 2022 has teamed up with the Special Journal Issue on Multifunctional Polymer Nanocomposites and Materials Science . (waset.org)
  • Visiongain's new 173 pages report assesses that the Polymer Nanocomposites market will reach $6.05 billion in 2017. (reportlinker.com)
  • A new report by visiongain concludes that the world market for the Polymer Nanocomposites will reach $6.05 billion in 2017. (articlesfactory.com)
  • The present Special Issue on "Polymer Nanocomposites" aims to publish original research, which either adds knowledge to the current understanding on polymer nanocomposites, or proposes technological innovations associated with these materials. (mdpi.com)
  • Polymer-clay nanocomposites are formed through the union of two very different materials with organic and mineral pedigrees. (wiley.com)
  • Polymer-Clay Nanocomposites presents the first comprehensive overview of the state of the art of these materials since they were first reported a decade ago. (wiley.com)
  • The idea behind Nanocomposite is to use building blocks with dimensions in nanometre range to design and create new materials with unprecedented flexibility and improvement in their physical properties. (wikipedia.org)
  • The behavior of a polymer nanocomposite is dictated by the characteristics of the interfaces present in these materials, the properties of the constituent phases, and their three dimensional orientation, dispersion and distribution on multiple length scales. (aiche.org)
  • The handpicked selection of topics and expert contributions make this survey of rubber nanocomposites an outstanding resource for anyone involved in the field of polymer materials design. (wiley.com)
  • This book focuses on polymer-clay nanocomposite materials. (routledge.com)
  • Fully green materials have experienced fast growth in the past several decades,and cellulose nanofiber (CNF) and cellulose nanocrystal (CNC) are the preferred choice for the manufacture of environmentally friendly nanocomposites and fully green bionanocomposites. (gc.ca)
  • Nanocomposite materials have emerged as suitable alternatives to overcome limitations of microcomposites and monolithics, while posing preparation challenges related to the control of elemental composition and stoichiometry in the nanocluster phase. (scielo.br)
  • In this context, the surface area/volume ratio of reinforcement materials employed in the preparation of nanocomposites is crucial to the understanding of their structure-property relationships. (scielo.br)
  • As in the case of microcomposites, nanocomposite materials can be classified, according to their matrix materials, in three different categories as shown in Table 2 . (scielo.br)
  • These encouraging results have greatly interested industrialists who would like to apply the benefits accrued in nanocomposite technology to technical ceramics and abrasive grits by substituting existing monolithic alumina materials with cost effective, higher performance nanocomposites. (europa.eu)
  • 2 . The nanocomposite blend composition according to claim 1 , wherein the polyolefin resin (a) is one or more materials selected from a high-density polyethylene (HDPE), a low-density polyethylene (LDPE), a linear low-density polyethylene (LLDPE), an ethylene-propylene polymer, and an ethylene-propylene copolymer. (google.es)
  • In his research, Zide makes a class of materials called nanocomposites that consist of metallic nanoparticles within a semi-conductor. (nanowerk.com)
  • In principle, Zide said the technique could also be applied to other materials systems, enabling researchers to combine more dissimilar materials in electronic nanocomposites. (nanowerk.com)
  • Recent advances in the production and manipulation of nanometer-scale materials have led to their increased use as fillers in new nanocomposites. (prweb.com)
  • This study, however, excludes certain materials (e.g., rubber, to which carbon black nanoparticles have been added) that technically fit the definition of nanocomposites but have been in commercial use for decades. (bccresearch.com)
  • The nanocomposite materials were also seen to display significant antimicrobial action against E. Coli. (techconnectworld.com)
  • Like other semiconductor materials, molybdenum disulfide, the material described in the Scientific Reports paper ( "Chromatic Mechanical Response in 2-D Layered Transition Metal Dichalcogenide (TMDs)-based Nanocomposites" ), is characterized by the way electrons are arranged and move about within its atoms. (eurekalert.org)
  • Carbon nanotubes are largely used as filler materials in nanocomposites. (articlesfactory.com)
  • In 2015, the North America was the leading consumer of polymer nanocomposites and is expected to lead through 2022 as there is high demand for polymer nanocomposites for replacing heavy weight automotive parts from polymer nanocomposite based materials. (articlesfactory.com)
  • Alexandre M, Dubois P (2000) Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials. (springer.com)
  • Second, this work reports and discusses different experimental approaches and preparative procedures adopted for the nanofabrication and conformation (powders, films, monoliths, foams, etc.) of nanocomposites, comparing in certain cases with analogous materials derived from layered clays instead of sepiolite or palygorskite. (csic.es)
  • Selected examples of fibrous clay-based nanocomposites are discussed to show the broad versatility of these materials in application fields as diverse as structural materials, conducting nanocomposites, biomaterials, environmental remediation, and sensor devices. (csic.es)
  • Accordingly, it is expected to prepare Cu 2 O-TiO 2 nanocomposite with the highly efficient photoexcited charge separation, the enhanced photocatalytic efficiency and the remarkable visible-light photoresponse by coupling TiO 2 with Cu 2 O, which has been reported in the few previous studies [ 15 - 18 ]. (hindawi.com)
  • Z.M. Cui, H. Yang, X.X. Zhao, Enhanced photocatalytic performance of g-C 3 N 4 /Bi 4 Ti 3 O 12 heterojunction nanocomposites. (springer.com)
  • The photocatalytic activity of the silver/silver halide nanocomposites was evaluated by the photodegradation of methylene blue, and was seen to retain the enhanced photocatalytic activity displayed by silver/silver halide plasmonic photocatalysts. (techconnectworld.com)
  • Winter and Ruan, as they have reported in the February 15, 2011 online edition of Nano Letters ( 'Alternating-Color Quantum Dot Nanocomposites for Particle Tracking' ), have taken a fundamentally different approach: quantum dots employed remain unchanged. (nanowerk.com)
  • A simple and open access to high-class infrastructure for the reliable production of small batches of functionalized nanoparticles and nanocomposites for testing could ease the way towards new nano-based products for chemical and pharmaceutical companies. (innovations-report.com)
  • Modeling and Characterization of Nanocomposites and Molecular Heterostructures as part of the Engineering Mechanics Institute annual conference at Stanford University. (imechanica.org)
  • Decreasing the size would be good only to a point, as the smallest particles tend to plasticize at low loadings and aggregate at high loadings, both of which harm macroscopic properties of polymer nanocomposites. (ornl.gov)
  • The ORNL-led study compared polymer nanocomposites containing particles 1.8 nm in diameter and those with particles 25 nm in diameter. (ornl.gov)
  • Most conventional polymer nanocomposites contain particles 10-50 nm in diameter. (ornl.gov)
  • The end result is a "nanocomposite" of stiff clay particles dispersed throughout a stretchy matrix that is now stronger and tougher. (medgadget.com)
  • Microstructure, thermo-mechanical, electrical properties and shape recovery efficiency of carbon nano-particles (CNPs) enhanced polystyrene (PS) nanocomposites were characterized. (ingentaconnect.com)
  • Recent work on nanocomposite ceramics by the partners in this proposal clearly shows an improvement of 2 3 times in reduced wear rate for composites consisting of nanosize SiC particles dispersed in an alumina matrix, compared to monolithic alumina. (europa.eu)
  • Additionally, the important role played by the nanoparticles in polymer blends structures has been illustrated in the current book, with special focus on fundamental aspects and properties of nanoparticles migration and interface crossing in immiscible polymer blend nanocomposites. (springer.com)
  • The nanocomposite combines one-dimensional polymer nanofibers and two-dimensional boron nitride nano-sheets. (techbriefs.com)
  • The present chapter gives an overview of the electrospinning process for producing nanofibers and developments in their application as polymer nanocomposites. (springer.com)
  • Thereafter, the incorporation of nanofibers (as nanofillers) into a (bulk) polymer matrix to generate electrospun polymer nanocomposites is described. (springer.com)
  • The potential use of nanofibers as reinforcement in polymer nanocomposites, as well as their role as secondary reinforcements, is discussed. (springer.com)
  • It was found that shear viscosity, storage modulus and loss modulus of the nanocomposites examined by a rotational rheometer increased with the MWNT content. (ingentaconnect.com)
  • The nature of the carbon nanotube/polymer bonding and the curvature of the carbon nanotubes within the polymer have arisen as particular factors in the efficacy of the carbon nanotubes to actually provide any enhanced stiffness or strength to the nanocomposite. (nsti.org)
  • b to d, Schematic illustration of the formation uniform BC-based nanocomposites with 0D nanoparticles, 1D nanotubes or nanowires, and 2-D nanosheets. (phys.org)
  • Here we present the solvent-cast printing of thin nanocomposite fibers made of thermoplastic poly(lactide) acid (PLA) reinforced with multi-walled carbon nanotubes (MWCNTs). (sigmaaldrich.com)
  • It was proposed to be due to the additional subgrain boundary between MWNT and BaTiO3 matrix, which led to transformation from an impurity-scattering mechanism to a dominant lattice-scattering mechanism in the MWNT/BaTiO3 nanocomposites as the content of carbon nanotubes increased. (ebscohost.com)
  • 8 . The nanocomposite blend composition according to claim 1 , wherein the melt index of the ionomer of the ionomer/intercalated clay nanocomposite (b, iii) is 0.1 to 10 g/10 min (190 C., 2,160 g). (google.es)
  • Nanocomposites have been used commercially since Toyota introduced the first polymer/clay nanocomposite auto parts in the 1980s,' says BCC Research nanotechnology analyst Andrew McWilliams. (prweb.com)
  • Can V, Abdurrahmanoglu S, Okay O (2007) Unusual swelling behavior of polymer-clay nanocomposite hydrogels. (springer.com)
  • Polymer layered silicate nanocomposites are compared to conventional polymeric composites due to the use of fillers to improve some specific properties 1 . (scielo.br)
  • Fully green cellulose nanocomposites", in Kargarzadeh, Hanieh. (gc.ca)
  • CeO2 / montmorillonite nanocomposites were electrochemically produced. (unt.edu)
  • The book carefully debates the preparation of unmodified and modified nanofillers, various manufacturing techniques of rubber nanocomposites, structure, morphology and properties of nanocomposites. (wiley.com)
  • The nanocomposite films exhibited large deformations under a magnetostatic field with a low loading level of 0.1 wt% in a thermoplastic polyurethane elastomer (TPU) matrix. (techbriefs.com)
  • For example, the biosynthesized Fe3O4/BC nanocomposite films exhibited superparamagnetic behavior and high tensile strength, which are expected to be useful in various fields such as electromagnetic actuators, smart microfluidics devices, and biomedicine. (phys.org)
  • Aalaie J, Vasheghani-Farahani E, Rahmatpour A, Semsarzadeh MA (2008) Effect of montmorillonite on gelation and swelling behavior of sulfonated polyacrylamide nanocomposite hydrogels in electrolyte solutions. (springer.com)
  • This book also discusses the extensive research developments for next generation nanocellulose-based polymer nanocomposites. (recordedbooks.com)
  • The effectiveness of the fiber alignment control has been demonstrated by tensile tests, namely the tensile strength and Young's modulus of the cellulose nanofiber-reinforced nanocomposites after stretching treatments were increased as compared with those of the untreated nanocomposites. (witpress.com)
  • This book consolidates knowledge, from fundamental to product development, on polymer nanocomposites processing with special emphasis on the processing-structure-property-performance relationships in a wide range of polymer nanocomposites. (springer.com)
  • These polymerization methods lead to the generation of the well delaminated polymer nanocomposites with a wide range of polymer matrices. (rsc.org)
  • In particular, two types of polyamide (PA-6) neat resins and their filled counterparts, such as a PA-6/ montmorillonite nanocomposite, a cellulose- fiber-reinforced PA-6 composite, and a hybrid PA- 6/cellulose/Wollastonite composite, were injection molded into ASTM test-bar samples with both conventional and microcellular injection molding. (usda.gov)
  • In this study, nanocomposites of polyamide 6 were obtained by the melt intercalation method, using a Brazilian bentonite modified with a quaternary ammonium salt. (scielo.br)
  • The impact properties of the nanocomposites showed inferior values in relation to the pure polyamide, in other words, decrease the toughness. (scielo.br)
  • The objective of this work was to analyze the effect of the Brazilian clay incorporation on the mechanical strength under the impact of polyamide 6/bentonite clay nanocomposites. (scielo.br)
  • Nanocomposite is a multiphase solid material where one of the phases has one, two or three dimensions of less than 100 nanometers (nm) or structures having nano-scale repeat distances between the different phases that make up the material. (wikipedia.org)
  • Polymer nanocomposites are a type of multiphase material. (articlesfactory.com)
  • There are a number of recent advances in these methods such as the use of reactive surfactants, modified initiators, advanced clay surface modifications, use of a variety of fillers, inverse polymerization, and miniemulsion polymerization methods which have further led the generation of advanced exfoliated nanocomposites. (rsc.org)
  • Several methods have been applied for the preparation of polymer-clay nanocomposites, such as melting intercalation, the most used among them 1 . (scielo.br)
  • Two extrusion-based methods appropriate to the manufacture of nanocomposite thermoplastics are fused-deposition modeling (FDM) 10 and solvent-cast printing. (sigmaaldrich.com)
  • Which Polymer Nanocomposites submarkets will flourish from 2017-2027? (reportlinker.com)
  • Where are the regional Polymer Nanocomposites market opportunities from 2017-2027? (reportlinker.com)
  • The experimental results showed that the prepared Cu 2 O-TiO 2 nanocomposite exhibited higher photocatalytic activity for the decomposition of MO than the pure Cu 2 O and the commercial Degussa P25 TiO 2 under visible light irradiation. (hindawi.com)
  • The process would develop a new method for preparing Cu 2 O-TiO 2 nanocomposite with the visible-light photocatalytic activity under mild conditions. (hindawi.com)
  • Bergshoef MM, Vancso GJ (1999) Transparent nanocomposites with ultrathin, electrospun nylon-4, 6 fiber reinforcement. (springer.com)
  • Polymer nanocomposites contain fillers of nanoparticles dispersed throughout the polymer matrix. (photonics.com)