• In polymer chemistry, in situ polymerization is a preparation method that occurs "in the polymerization mixture" and is used to develop polymer nanocomposites from nanoparticles. (wikipedia.org)
  • The next sections will cover the various examples of polymer nanocomposites produced using the in situ polymerization technique, and their real life applications. (wikipedia.org)
  • A study by Zeng and Lee investigated the role of the initiator in the in situ polymerization process of clay nanocomposites. (wikipedia.org)
  • Herein, nanocomposites consisting of cross-linked poly([2-(methacryloyloxy)ethyl]trimethylammonium chloride) (PMETAC) and bacterial nanocellulose (BNC) were prepared, characterized and tested towards the polymorphic fungus Candida albicans. (ua.pt)
  • The BNC three-dimensional network enabled the in-situ polymerization of the non-toxic and bioactive quaternary-ammonium monomer, which originated transparent nanocomposites containing 10 and 40 wt. (ua.pt)
  • In this research, new poly(methylmethacrylate) based nanocomposites for SERS were prepared by in situ miniemulsion polymerization in the presence of organically capped metal silver nanoparticles. (ua.pt)
  • Stable latexes of poly (styrene-co-methyl methacrylate)/clay nanocomposites were synthesized by in-situ reverse atom transfer radical polymerization at 90 °C and in miniemulsion system. (ripi.ir)
  • XRD patterns displayed no peak in in-situ synthesized nanocomposites which indicates an exfoliated structure of all the nanocomposites prepared by this method. (ripi.ir)
  • The in situ polymerization process consists of an initiation step followed by a series of polymerization steps, which results in the formation of a hybrid between polymer molecules and nanoparticles. (wikipedia.org)
  • After the polymerization mechanism is completed, a nanocomposite is produced, which consists of polymer molecules bound to nanoparticles. (wikipedia.org)
  • The iron hydroxyl phosphate nanoparticles were then incorporated into poly (methyl methacrylate) (PMMA) by in situ radical polymerization. (iafss.org)
  • Nakova A, Ilieva M, Boiadjieva-Scherzer T, Tsakova V. Electroless deposition of palladium nanoparticles on poly (3,4-ethylene-dioxythiophene)-role of the electrode substrate. (stmjournals.com)
  • Novel polyurethane nanocomposite (PUN) materials containing different surface-functionalized mesoporous silica nanoparticles (MSNs) were prepared by in situ polymerization methodology. (ac.rs)
  • PY - 2021 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4016 AB - Novel polyurethane nanocomposite (PUN) materials containing different surface-functionalized mesoporous silica nanoparticles (MSNs) were prepared by in situ polymerization methodology. (ac.rs)
  • More specifically, we prove that flexible Alg/MXene hydrogels act as self-supported electroactive electrodes for the electrochemical detection of bioanalytes, such as dopamine, with a performance similar to that achieved using more sophisticated electrodes, as for example those containing conducting poly-mers and electrocatalytic gold nanoparticles. (ibecbarcelona.eu)
  • In order to perform the in situ polymerization of precursor polymer molecules to form a polymer nanocomposite, certain conditions must be fulfilled which include the use of low viscosity pre-polymers (typically less than 1 pascal), a short period of polymerization, the use of polymer with advantageous mechanical properties, and no formation of side products during the polymerization process. (wikipedia.org)
  • In situ polymerization is an important method of preparing polymer grafted nanotubes using carbon nanotubes. (wikipedia.org)
  • In situ polymerization offers several advantages in the preparation of polymer grafted nanotubes compared to other methods. (wikipedia.org)
  • Lastly, in situ polymerization can achieve stronger covalent interactions between polymer and CNTs earlier in the process. (wikipedia.org)
  • Recent improvements in the in situ polymerization process have led to the production of polymer-carbon nanotube composites with enhanced mechanical properties. (wikipedia.org)
  • Mamdouh A. Al-Harthi , L.Cheng, J. Soares, L. Simon ' Atom-Transfer Radical Polymerization of Styrene with Bifunctional and Monofunctional Initiators: Experimental and Mathematical Modeling Results ' Journal of Polymer Science, Part A: Polymer Chemistry , 45(11), 2212, (2007). (edu.sa)
  • Mamdouh A. Al-Harthi , A. Sardashti, J. Soares, L. Simon , ' Atom transfer radical polymerization (ATRP) of styrene and acrylonitrile with monofunctional and bifunctional initiators' Polymer, 48(7), 1954-1961, (2007). (edu.sa)
  • Polymer electrolyte membranes (PEMs) are synthesized via in situ polymerization of vinylphosphonic acid (VPA) within a poly(2,5-benzimidazole) (ABPBI) matrix. (agu.edu.tr)
  • Here, we show that order-order and disorder-order nanostructural transitions are possible using in situ polymer grafting from the diblock polymer, poly(styrene)-block-poly(butadiene). (psu.edu)
  • This paper describes a program to assess degradation effects on polyethylene, the most common polymer used in rotomoulding. (4spe.org)
  • A review of the properties and applications of poly(methyl methacrylate) (PMMA). (stmjournals.com)
  • The poly(methyl methacrylate) (PMMA) or copolymer of methyl methacrylate (MMA) with acrylic acid (AA) composites doped with europium complexes were prepared by radical in-situ polymerization. (keyopinionleaders.com)
  • Unlike solution or melt processing, in situ polymerization can prepare insoluble and thermally unstable polymers. (wikipedia.org)
  • But unlike other common polymers, the viscosity of cyclic poly (butylene terephthalate) oligomers (CBT) is like water. (dissertation.com)
  • The work presented here highlights how the chemical process of converting standard linear diblock copolymers to grafted block polymers drives interesting and controllable polymerization-induced morphology transitions. (psu.edu)
  • Poly (N-isopropylacrylamide) (PNIPAAM) was used as a model system to demonstrate the utility of environmentally responsive, or "smart", polymers as agents for the release of bacterial biofilms. (avsconferences.org)
  • Various branched polymers were synthesized through in situ radical polymerization of acrylic acid, maleic anhydride and polyethylene glycol methyl ether methacrylate (Mn=950 g/mol) in presence of nanosilica with different contents. (ac.ir)
  • Bergfelt A, Rubatat L, Mogensen R, Brandell D, Bowden T. D8-poly(methyl methacrylate)-poly[(oligo ethylene glycol) methyl ether methacrylate] tri-block-copolymer electrolytes: Morphology, conductivity and battery performance. (stmjournals.com)
  • A series of sulfonic waterborne polyurethane hydrogels(WPUHs) was prepared by in-situ polymerization using 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate(IPDI), polyethylene glycol(PEG) and diethylene glycol(DEG) as raw materials, and 2,2-dimethylol propionic acid(DMPA) and N , N -bis(2-hydroxyethyl)-2-aminoethanesulfonic acid sodium salt(BES-Na) as hydrophilic chain extenders. (ciac.jl.cn)
  • DIAO Sensen,RUAN Mengmeng,WANG Guiyou.Synthesis and Properties of Polyurethane Hydrogels Based on 100% Renewably-Sourced Poly(trimethylene ether) Glycol[J]. J Funct Polym,2018,31(4):330-339(in Chinese). (ciac.jl.cn)
  • One-half-inch-diameter magnetite pellets containing less than 5 wt-pct poly(methyl methacrylate) gave compressive strengths in excess of 500 lb after polymerization at 80 deg c (176 deg f) and annealing at 200 deg c (392 deg f). (cdc.gov)
  • The compressive strength of partially oxidized magnetite pellets (500 deg c (932 deg f) increased from about 100 lb to over 1,000 lb after impregnation with less than 5 wt-pct poly(methyl methacrylate). (cdc.gov)
  • SEM micrographs presented a monodisperse distribution of spherical shape particles of poly (styrene-co-methyl methacrylate)/clay nanocomposite with a size in the range of around 200 nm. (ripi.ir)
  • Miniemulsion polymerization has been employed for its abundant advantages to encapsulate inorganic materials, simple nucleation step, and elimination of organic solvents. (ripi.ir)
  • In this work, multiwalled carbon nanotubes (MWNTs) were blended with cyclic poly (butylene terephthalate) by a new method. (dissertation.com)
  • The formation and morphological evolution of spherical block copolymer nano-objects was characterized during reversible addition fragmentation chain transfer polymerization of diacetone acrylamide in the presence of a series of poly(dimethylacrylamide) (PDMAm) macromolecular chain transfer agents with varying degrees of polymerization. (magritek.com)
  • For the first time, the catalyst performances were monitored by means of in situ FT-IR spectroscopy in transmission mode, simulating industrially significant polymerization conditions (i.e. ethylene is fed onto the catalyst in the presence of the activator and of the solvent). (unito.it)
  • The preparation of poly(p-phenylene vinylene) (PPV) encapsulated in a mesoporous silica, MCM-41, is reported. (ubc.ca)
  • A standard technique to prepare clay nancomposites is in situ polymerization, which consists of intercalation of the monomer with the clay surface, followed by initiation by the functional group in the organic cation and then polymerization. (wikipedia.org)
  • latex synthesized with optimal blend surfactant properties, and its coatability on paper, polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), and polyvinyl chloride (PVC) films is presented. (coatingsworld.com)
  • Mercaptopropyl-functionalized stainless steel wire that was formed by co-condensation of tetramethoxysilane and 3-mercaptopropyltrimethoxysilane via a sol-gel process, which is followed by in situ surface radical chain-transfer polymerization of 1-vinyl-3-octylimidazolium hexafluorophosphate to result in polymeric ionic liquid modified stainless steel wire. (who.int)
  • Towards the end of the 20th century, Toyota Motor Corp devised the first commercial application of the clay-polyamide-6 nanocomposite, which was prepared via in situ polymerization. (wikipedia.org)
  • Melt polymerization of acrylamide initiated by nucleophiles: a route toward highly branched and amorphous polyamide 3. (ki.si)
  • Upon the formation of a homogeneous mixture, initiation of the polymerization reaction is carried out by addition of an adequate initiator, which is exposed to a source of heat, radiation, etc. (wikipedia.org)
  • The goal of this study was the synthesis of new di(imino)pyridine-vanadium(III)- complexes and the investigation of their structure/property relationships in the application as catalysts for homogeneous and heterogeneous ethylene polymerizations and oligomerizations. (uni-bayreuth.de)
  • Highly porous poly(arylene cyano-vinylene) beads derived through the Knoevenagel condensation of the oil-in-oil-in-oil double emulsion templates. (ki.si)
  • Tunable poly(aryleneethynylene) networks prepared by emulsion templating for visible-light-driven photocatalysis. (ki.si)
  • Surfactants are used in emulsion polymerization (EP) formulas at less than two percent of the total mass, but they play an important role in the EP processes. (coatingsworld.com)
  • The emulsion polymerization process is commonly applied to synthesize nanospheres between 30 nm to 300 nm in diameter. (coatingsworld.com)
  • The formation of grit and coagulum and reactor build-up begins due to various reasons and with various durations of the EP process, or due to poor stability of the latex, giving rise to flocculation and formation of aggregates and hard to clean reactors.3,4 To provide effective electrostatic and steric stabilization, novel surfactants were synthesized and evaluated in the emulsion polymerizations. (coatingsworld.com)
  • The seed formula used for the emulsion polymerization to demonstrate the efficiency of the EP-3 versus the competitor product can be seen in Table 2. (coatingsworld.com)
  • Thanks to their high thermal stability, these salts can be used during in situ polymerization, a method that favors the achievement of a good dispersion of the clay. (unibo.it)
  • Noncovalent protection for direct synthesis of α−amino−ω−hydroxylα−amino−ω−hydroxyl poly(ethylene oxide). (ki.si)
  • The materials were mixed in solid dispersion and prepared by simultaneous in situ polymerisation. (dissertation.com)
  • There are numerous unstable oligomers (molecules) which must be synthesized in situ (i.e. in the reaction mixture but cannot be isolated on their own) for use in various processes. (wikipedia.org)
  • It was found that the polymerisation and crystallisation of CBT occurs simultaneously and rapidly in a short time. (dissertation.com)
  • The nanostructural transition occurs by a grafting from mechanism in which poly(styrene) chains are initiated from the poly(butadiene) block via the creation of an allylic radical, which increases the overall molecular weight and the poly(styrene) volume fraction. (psu.edu)
  • Huang, Vanhaecke, and Chen found that in situ polymerization can potentially produce composites of conductive CNTs on a grand scale. (wikipedia.org)
  • The structural, vibrational and electronic properties of silica-supported Ziegler-Natta catalysts industrially relevant for polyethylene production were investigated in details by means of a multi-technical approach, at each step of catalyst preparation - including pre-catalyst activation. (unito.it)
  • There are several advantages of the in situ polymerization process, which include the use of cost-effective materials, being easy to automate, and the ability to integrate with many other heating and curing methods. (wikipedia.org)
  • Poly(ionic liquid)s (PILs), which have advantages such as good chemical compatibility and electrochemical stability, is expected to lead the progress of next-generation energy technology. (ncku.edu.tw)
  • In situ small-angle X-ray scattering (SAXS) is a powerful technique for characterizing block-copolymer nano-object formation during polymerization-induced self-assembly. (magritek.com)
  • Predried magnetite and hematite pellets impregnated with low-viscosity vinyl liquid monomers and polymerized in situ by thermal-catalytic techniques yielded compressive strengths equivalent to those reported by high- temperature induration plants. (cdc.gov)
  • Some downsides of this preparation method, however, include limited availability of usable materials, a short time period to execute the polymerization process, and expensive equipment is required. (wikipedia.org)
  • Two techniques for resisting In-Situ Polymerization of fabrics: "Tie-Poly": tie-die binding Batik: application of hot wax Part of a counterchemists collaboration. (kobakant.at)
  • The specific discharge capacity of the LiFePO 4 /Li cell with the CPE-8 is 149 mAh g −1 , and 90% of the value is maintained after 140 cycles at 0.2 C under 25 °C. These advancements are attributed to the synergistic effects of in-situ cross-linked PIL networks and TiO 2 NPs, representing a simple and effective approach towards realizing new CPE for high-performance lithium batteries. (ncku.edu.tw)
  • Polymerization-induced structural transitions have gained attention recently due to the ease of creating and modifying nanostructured materials with controlled morphologies and length scales. (psu.edu)
  • Herein, a series of thermally cured PEs featuring cross-linked ionic networks are fabricated via solvent-less, in-situ polymerization and introduced for rechargeable lithium batteries. (ncku.edu.tw)
  • SAXS analysis indicated that during the polymerization, highly solvated, loosely defined aggregates form after approximately 100 s, followed by expulsion of solvent to form well-defined spherical particles with PDAAm cores and PDMAm stabilizer chains, which then grow as the polymerization proceeds. (magritek.com)
  • In situ SAXS conducted on PISA syntheses using different PDMAm DPs indicated a varying conformation of the chains in the particle cores, from collapsed chains for PDMAm 47 to extended chains for PDMAm 143 . (magritek.com)
  • To work effectively in situ, it requires high intensity X-rays which enable the short acquisition times required for real-time measurements. (magritek.com)
  • Some aspects of in situ polymerization that can help achieve this feat are that it is cost effective with regards to operation, requires minimal sample, has high sensitivity, and offers many promising environmental and bioanalytical applications. (wikipedia.org)
  • These nanospheres have been synthesized via seeded, in-situ seeded, and continuous processes.1,2 In the industry, there is ongoing interest to develop a surfactant to synthesize a high-solids latex of 65% or higher, and the need for these high solids latexes is cost driven - i.e., a shorter dry time in pressure sensitive adhesives. (coatingsworld.com)