Hydrogel: A network of cross-linked hydrophilic macromolecules used in biomedical applications.Polymers: Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).Hydrogels: Water swollen, rigid, 3-dimensional network of cross-linked, hydrophilic macromolecules, 20-95% water. They are used in paints, printing inks, foodstuffs, pharmaceuticals, and cosmetics. (Grant & Hackh's Chemical Dictionary, 5th ed)Biocompatible Materials: Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.Polyethylene Glycols: Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the molecular weight indicated by a number following the name. They are used as SURFACTANTS, dispersing agents, solvents, ointment and suppository bases, vehicles, and tablet excipients. Some specific groups are NONOXYNOLS, OCTOXYNOLS, and POLOXAMERS.Contact Lenses, Hydrophilic: Soft, supple contact lenses made of plastic polymers which interact readily with water molecules. Many types are available, including continuous and extended-wear versions, which are gas-permeable and easily sterilized.Materials Testing: 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.Tissue Engineering: Generating tissue in vitro for clinical applications, such as replacing wounded tissues or impaired organs. The use of TISSUE SCAFFOLDING enables the generation of complex multi-layered tissues and tissue structures.Tissue Scaffolds: Cell growth support structures composed of BIOCOMPATIBLE MATERIALS. They are specially designed solid support matrices for cell attachment in TISSUE ENGINEERING and GUIDED TISSUE REGENERATION uses.Polyvinyl Alcohol: A polymer prepared from polyvinyl acetates by replacement of the acetate groups with hydroxyl groups. It is used as a pharmaceutic aid and ophthalmic lubricant as well as in the manufacture of surface coatings artificial sponges, cosmetics, and other products.Acrylic ResinsEthylene Oxide: A colorless and flammable gas at room temperature and pressure. Ethylene oxide is a bactericidal, fungicidal, and sporicidal disinfectant. It is effective against most micro-organisms, including viruses. It is used as a fumigant for foodstuffs and textiles and as an agent for the gaseous sterilization of heat-labile pharmaceutical and surgical materials. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p794)Hydrolysis: The process of cleaving a chemical compound by the addition of a molecule of water.Absorbable Implants: Implants constructed of materials designed to be absorbed by the body without producing an immune response. They are usually composed of plastics and are frequently used in orthopedics and orthodontics.Coated Materials, Biocompatible: Biocompatible materials usually used in dental and bone implants that enhance biologic fixation, thereby increasing the bond strength between the coated material and bone, and minimize possible biological effects that may result from the implant itself.Decanoates: Salts and esters of the 10-carbon monocarboxylic acid-decanoic acid.Myocytes, Cardiac: Striated muscle cells found in the heart. They are derived from cardiac myoblasts (MYOBLASTS, CARDIAC).Microtechnology: Manufacturing technology for making microscopic devices in the micrometer range (typically 1-100 micrometers), such as integrated circuits or MEMS. The process usually involves replication and parallel fabrication of hundreds or millions of identical structures using various thin film deposition techniques and carried out in environmentally-controlled clean rooms.Microfluidics: The study of fluid channels and chambers of tiny dimensions of tens to hundreds of micrometers and volumes of nanoliters or picoliters. This is of interest in biological MICROCIRCULATION and used in MICROCHEMISTRY and INVESTIGATIVE TECHNIQUES.Microfluidic Analytical Techniques: Methods utilizing the principles of MICROFLUIDICS for sample handling, reagent mixing, and separation and detection of specific components in fluids.Nanostructures: 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.Computer Storage Devices: Devices capable of receiving data, retaining data for an indefinite or finite period of time, and supplying data upon demand.Electric Power Supplies: Devices that control the supply of electric current for running electrical equipment.Karaya Gum: Polysaccharide gum from Sterculia urens (STERCULIA). It is used as a suspending or stabilizing agent in foods, cosmetics and pharmaceuticals; a bulk-forming laxative; a surgical lubricant and adhesive; and in the treatment of skin ulcers.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.Methacrylates: Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group.Polymethacrylic Acids: 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.Colorimetry: Any technique by which an unknown color is evaluated in terms of standard colors. The technique may be visual, photoelectric, or indirect by means of spectrophotometry. It is used in chemistry and physics. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Molecular Imprinting: A methodology for chemically synthesizing polymer molds of specific molecules or recognition sites of specific molecules. Applications for molecularly imprinted polymers (MIPs) include separations, assays and biosensors, and catalysis.Manuscripts, MedicalJapanTriticum: A plant genus of the family POACEAE that is the source of EDIBLE GRAIN. A hybrid with rye (SECALE CEREALE) is called TRITICALE. The seed is ground into FLOUR and used to make BREAD, and is the source of WHEAT GERM AGGLUTININS.Societies, Medical: Societies whose membership is limited to physicians.Plant Roots: The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (From American Heritage Dictionary, 1982; Concise Dictionary of Biology, 1990)Biomass: Total mass of all the organisms of a given type and/or in a given area. (From Concise Dictionary of Biology, 1990) It includes the yield of vegetative mass produced from any given crop.Ultrasonography: The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.Ultrasonography, Prenatal: The visualization of tissues during pregnancy through recording of the echoes of ultrasonic waves directed into the body. The procedure may be applied with reference to the mother or the fetus and with reference to organs or the detection of maternal or fetal disease.Ultrasonics: A subfield of acoustics dealing in the radio frequency range higher than acoustic SOUND waves (approximately above 20 kilohertz). Ultrasonic radiation is used therapeutically (DIATHERMY and ULTRASONIC THERAPY) to generate HEAT and to selectively destroy tissues. It is also used in diagnostics, for example, ULTRASONOGRAPHY; ECHOENCEPHALOGRAPHY; and ECHOCARDIOGRAPHY, to visually display echoes received from irradiated tissues.Pregnancy: The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.GermanyResearch: Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed)Academies and Institutes: Organizations representing specialized fields which are accepted as authoritative; may be non-governmental, university or an independent research organization, e.g., National Academy of Sciences, Brookings Institution, etc.Cooperative Behavior: The interaction of two or more persons or organizations directed toward a common goal which is mutually beneficial. An act or instance of working or acting together for a common purpose or benefit, i.e., joint action. (From Random House Dictionary Unabridged, 2d ed)Biomedical Research: Research that involves the application of the natural sciences, especially biology and physiology, to medicine.Siloxanes: Silicon polymers that contain alternate silicon and oxygen atoms in linear or cyclic molecular structures.Silicones: A broad family of synthetic organosiloxane polymers containing a repeating silicon-oxygen backbone with organic side groups attached via carbon-silicon bonds. Depending on their structure, they are classified as liquids, gels, and elastomers. (From Merck Index, 12th ed)Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Permeability: Property of membranes and other structures to permit passage of light, heat, gases, liquids, metabolites, and mineral ions.Polarography: An electrochemical technique for measuring the current that flows in solution as a function of an applied voltage. The observed polarographic wave, resulting from the electrochemical response, depends on the way voltage is applied (linear sweep or differential pulse) and the type of electrode used. Usually a mercury drop electrode is used.Absorbent Pads: Pads made of various materials used for personal hygiene usually for absorbing URINE or FECES. They can be worn as underpants or pants liners by various age groups, from NEWBORNS to the ELDERLY. Absorbent pads can be made of fluff wood pulp and HYDROGEL absorbent covered with viscose rayon, polyester, polypropylene, or POLYETHYLENE coverstock.AmidinesAcrylatesDietary Proteins: Proteins obtained from foods. They are the main source of the ESSENTIAL AMINO ACIDS.Acrylamide: A colorless, odorless, highly water soluble vinyl monomer formed from the hydration of acrylonitrile. It is primarily used in research laboratories for electrophoresis, chromatography, and electron microscopy and in the sewage and wastewater treatment industries.Paper
I. The gelatin-polyacrylamide system". Journal of Applied Polymer Science. 40 (34): 401-410. doi:10.1002/app.1990.070400308. ... Chatterji, Prabha R. (5 August 1990). "Interpenetrating hydrogel networks. ... Chatterji, Prabha R. "Gelatin with hydrophilic/hydrophobic grafts and glutaraldehyde crosslinks". Journal of Applied Polymer ...
Polymer. 45: 4017-4027. doi:10.1016/j.polymer.2004.03.104. Barton, AFM (1991). Handbook of Solubility Parameters and Other ... Kwok AY, Qiao GG, Solomon DH (2004). "Synthetic hydrogels 3. Solvent effects on poly(2-hydroxyethyl methacrylate) networks". ... It has found particular use in predicting solubility and swelling of polymers by solvents. More complicated three-dimensional ... Barton, AFM (1990). Handbook of Polymer Liquid Interaction Parameters and Other Solubility Parameters. CRC Press. Abboud J.-L. ...
Polymer Chemistry. Multifunctional photo-crosslinked polymeric ionic hydrogel films. 5 (8), 2824-2835. Russell, A.J. (2014) The ... Blood soluble polymers for enhancing near-vessel-wall RBC traffic in presence of hemoglobin based oxygen carrier. 83, October ... "Dramatically stabilized phosphotriesterase-polymers for nerve agent degradation". www.wiley.com. "Device that rapidly detects ... Modification of Surfaces with Polymers, US Patent 8349410, (2013) R.R. Koepsel, G. Amitai, A.J. Russell and H. Murata. ...
"Two-dimensional arrays of cell-laden polymer hydrogel modules". Biomicrofluidics. 10 (1): 014110. doi:10.1063/1.4940430. PMC ... She is currently a tier 1 Canadian researcher in Advanced Polymer Materials and also a Fellow of Royal Society of Canada and ... In 1986, she obtained her Ph.D. degree in physical chemistry of polymers in the Russian Academy of Sciences . Eugenia then ... She then joined the research lab of Mitchel Winnick at the University of Toronto in Canada to study multicomponent polymer ...
It can form hydrogels. PolyMAPTAC, or poly[(3-(methacryloylamino)-propyl] trimethylammonium chloride), is similar.. ... PolyAPTAC, or poly (acrylamido-N-propyltrimethylammonium chloride), is an organic polymer. It is water-soluble, forms gels when ...
Before an electrophoretic run is started the prepared 4% T (total polymer content (T)), 2.67% C (cross-linker concentration (C ... doi:10.1016/0079-6700(82)90004-1. Yoon J, Cai S, Suo Z, Hayward RC (2010). "Poroelastic swelling kinetics of thin hydrogel ... Nishinari K (2009). "Some thoughts on the definition of a gel". Progress in Colloid and Polymer Science Vol 136: Gels: ... Systematic investigations of the hydrogel stability over time reveal significant changes in gel structure (porosity) by day 3 ( ...
Polymer (1994) "A Single Component Conducting Polymer Hydrogel as a Scaffold for Tissue Engineering" - Advanced Functional ... G., Wallace, Gordon (2009). Conductive electroactive polymers intelligent polymer systems. CRC. pp. xiii. ISBN 142006715X. OCLC ... "A Single Component Conducting Polymer Hydrogel as a Scaffold for Tissue Engineering". Advanced Functional Materials. 22: 2692- ... a facile route to conducting polymers with preferred one-screw-sense helicity". Polymer. 35 (14): 3113-3115. doi:10.1016/0032- ...
... and Thermally-Responsive Programmable Materials Based on Carbon Nanotube-Hydrogel Polymer Composites". Nano Letters. 11 (8): ... Cross-linked Hydrogel The reaction scheme below is a terpolymerization to form a cross-linked hydrogel. The reactant ammonium ... Functionalization of the polymer chain-end allows for the polymer to be used in many diverse settings and applications. ... Okano; Y.H. Bae; H. Jacobs; S.W. Kim (1990). "Thermally on-off switching polymers for drug permeation and release". Journal of ...
A nanogel is a nanoparticle composed of a hydrogel - a crosslinked hydrophilic polymer network. Nanogels are most often ... Like hydrogels, the pores in nanogels can be filled with small molecules or macromolecules, and their properties, such as ... Nanogels are not to be confused with Nanogel aerogel, a lightweight thermal insulator, or with nanocomposite hydrogels (NC gels ... Progress in Polymer Science. 33 (4): 448-77. doi:10.1016/j.progpolymsci.2008.01.002. Raemdonck, Koen; Demeester, Joseph; De ...
... is a polymer that forms a hydrogel in water. Poly (hydroxyethyl methacrylate) (PHEMA) hydrogel for intraocular lens (IOL) ... These copolymer hydrogel lenses are often suffixed "-filcon", such as Methafilcon, which is a copolymer of hydroxyethyl ... Poly-HEMA functions as a hydrogel by rotating around its central carbon. In air, the non-polar methyl side turns outward, ... Another copolymer hydrogel lens, called Polymacon, is a copolymer of hydroxyethyl methacrylate and Ethylene glycol ...
"Polymeric and Self Assembled Hydrogels". 19 November 2012. doi:10.1039/9781849735629. "In-Situ Gelling Polymers - For ... "Symposium on Innovative Polymers for Controlled Delivery - Rising Stars Announced> 4th Symposium on Innovative Polymers for ... Xian Jun Loh (Chinese: 罗贤俊; pinyin: Lúo Xián Jùn; born 1981) is a polymer chemist and author working in the inter-disciplinary ... "Injectable hydrogels for precise chemotherapy - Advanced Science News". Wiley-VCH. Retrieved 2017-05-01. Wu, Y.-L., Wang, H., ...
Materials include polymers, responsive hydrogels, shape memory polymers and bio-materials. The dynamic mask defines the beam. ... The beam is focused on the surface of a UV-curable polymer resin through a projection lens that reduces the image to the ...
Edible jelly is a common example of a hydrogel and has approximately the density of water. Polyionic polymers are polymers with ... Play media A hydrogel is a network of polymer chains that are hydrophilic, sometimes found as a colloidal gel in which water is ... Common uses for hydrogels include: Scaffolds in tissue engineering. When used as scaffolds, hydrogels may contain human cells ... Hydrogel-coated wells have been used for cell culture Environmentally sensitive hydrogels (also known as 'Smart Gels' or ' ...
Proteins are polymers that are made up of amino acid chains linked with peptide bonds. They have four distinct levels of ... 2009). "Immobilization of carbonic anhydrase by embedding and covalent coupling into nanocomposite hydrogel containing ... These are polymers, called polysaccharides, which are made up of chains of simple sugars connected via glycosidic bonds. These ... Entrapment can be between lattices of polymer, known as gel entrapment, or within micro-cavities of synthetic fibers, known as ...
Other transparent, permeable materials were tested, including hydrogel polymers in the 1960s. Some early corneal inlay ... The FlexivueMicrolens (PresbiaCoöperatief U.A.) is a refractive hydrophilic polymer lens. The central zone of the lens is free ... The Icolens System (Neoptics AG) is another refractive hydrophilic polymer lens, similar to the Flexivue Microlens, with no ... is a thin transparent biocompatible hydrogel implant. It is 2 mm in diameter and varies in thickness from 10 microns in the ...
Journal of Polymer Science Part A: Polymer Chemistry. 38 (1): 117-122. doi:10.1002/(SICI)1099-0518(20000101)38:1. 3.0.CO;2-F. ... Zahuriaan-Mehr, M. J.; Pourjavadi, A.; Salimi, H.; Kurdtabar, M. (2009). "Protein- and homo poly(amino acid)-based hydrogels ... In this process sodium-DL-(α,β)-poly(aspartate) with 30% α-linkages and 70% β-linkages randomly distributed along the polymer ... Hydrophilic Polymers. Advances in Chemistry. 248. ACS. pp. 99 -111. doi:10.1021/ba-1996-0248.ch006. ISBN 9780841231337. Pivcova ...
One study examined a three-dimensional conducting polymer and hydrogel network inside which silicon nanoparticles reside. The ... with a conducting polymer binder. In general, the conducting polymer additive provides both mechanical stabilization and an ... Another nanoparticle approach is using conducting polymers as both the binder and the additive for nanoparticle batteries. ... "A Commercial Conducting Polymer as Both Binder and Conductive Additive for Silicon Nanoparticle-Based Lithium-Ion Battery ...
During the years 2001-2005, a PVP carrageenan hydrogel dressing for burns and wounds was developed by the PNRI as well as the ... It is made from Polyvinylpyrrolidone, a water-soluble polymer, and Carrageenan, a seaweed polysaccharide by the means of ... Abad, "PVP-Carrageenan Hydrogel Dressing." 2008. De Guzman, "Radiation-Sterilized Honey Alginate Wound Dressing for Exudating ... Another development is the Carrageenan PGP as Plant Food Supplement where the radiation-induced degradation of natural polymers ...
"Preparation conditions and swelling equilibria of dextran hydrogels prepared by some crosslinking agents". Polymer. 45 (19): ... doi:10.1016/j.polymer.2004.07.067. Cite error: The named reference :0 was invoked but never defined (see the help page).. ... N,N'-Methylenebisacrylamide (MBAm or MBAA) is a cross-linking agent used during the formation of polymers such as ... 2014). "Super Tough, Ultrastretchable, and Thermoresponsive Hydrogels with Functionalized Triblock Copolymer Micelles as Macro- ...
Li, Jun (2010-07-22). "Self-assembled supramolecular hydrogels based on polymer-cyclodextrin inclusion complexes for drug ... Although it is a polymer network (gel), the rings are not fixed on the polyrotaxanes in the polymer network, the crosslinks of ... In chemical gels, the polymer chains are easy to be broken because the lengths of the heterogenous polymer are limited or fixed ... 3) Polyrotor/polyaxis: polymers possess covalently bonded cyclic molecule-moieties assembled with polymers possess guested in ...
Hydro-reactive polymers/hydrogels. Skylar Tibbits is the director of the Self-Assembly Lab at MIT, and worked with the ... Thermo-reactive polymers/hydrogels. Poly(N-isopropylacrylamide), or pNIPAM, is a commonly used thermo-responsive material ... Hydrogels composed of pNIPAM and some other polymer, such as 4-hydroxybutyl acrylate (4HBA,) exhibit strong reversibility, ... The material itself is made of chemical photo-reactive polymers. These compounds use a polymer mixture combined with a ...
"Polymers in everyday things - Contact Lenses" (PDF). rsc.org. Royal Society of Chemistry. Archived from the original (PDF) on ... Newer soft lens materials include silicone-hydrogels to provide more oxygen to your eye while you wear your lenses. The U.S. ... "Editorial - Should Silicone Hydrogels be Placed in a Separate FDA Soft Contact Lens Category?". www.siliconehydrogels.org. ... "Looking at Silicone Hydrogels Across Generations". www.optometricmanagement.com. Optometric Management. Retrieved 18 June 2016 ...
Evaluation of porous hydrogel scaffolds for nerve repair. Development and study of polymer matrices for the ... First polymer-biopolymer combinations to be reported as interpenetrating polymer networks (IPNs). Invention ... supramolecular polymers, sustained release of bioactive agents, tissue engineering and the use of polymers in genetic therapies ... artificial vitreous substitutes and in topics such as interaction of laser radiation with polymers, photoresponsive polymers, ...
These bioinks are often adopted from existing hydrogel biomaterials and derived from natural polymers such as gelatins, ... Bioinks distinguish themselves from traditional biomaterials such as hydrogels, polymer networks, and foam scaffolds due to ... Bioink compositions and chemistries are often inspired and derived from existing hydrogel biomaterials. However, these hydrogel ... Altering the composition of these hydrogels to permit filament formation is necessary for their translation as bioprintable ...
... , or poly(2-acrylamido-2-methyl-1-propanesulfonic acid)® (Trademark of The Lubrizol Corporation), is an organic polymer ... It can form hydrogels. 2-Acrylamido-2-methylpropane sulfonic acid (AMPS). ...
Journal of Polymer Science Part A: Polymer Chemistry. 40 (2): 192-209. Bibcode:2002JPoSA..40..192K. doi:10.1002/pola.10090.. ... Kelly, Andrew M; Wiesbrock, Frank (15 October 2012). "Strategies for the Synthesis of Poly(2-Oxazoline)-Based Hydrogels". ... Polymers. 2-Oxazolines, such as 2-ethyl-2-oxazoline, can undergo living cationic ring-opening polymerisation to form poly ... Hoogenboom, Richard (12 October 2009). "Poly(2-oxazoline)s: A Polymer Class with Numerous Potential Applications". Angewandte ...
The polymer is useful in making hydrolytically degradable hydrogels which can be used in drug delivery and related biomedical ... On example of the polymer is a poly(ether carbonate) of the formula X-O-[(-CH2CH2-O-)n-CO2-]n(CH2CH2))n-y where X and Y are ... The polymer can be conjugated to biologically active agents such as proteins or peptides to impart improved water solubility, ... The polymer can be hydrolytically degraded into oligomers (e.g., oligomers of ethylene oxide) under physiological conditions. ...
Many hydrogels, including natural polymer hydrogels, synthetic polymer hydrogels, and natural/synthetic hybrid hydrogels are ... These hydrogels not only retain cells in the infarcted area, but also provide support for restoring myocardial wall stress and ... Hydrogels, because of their tissue-like properties, have been used as supporting matrices to deliver cells into infarcted ... Bioactive and biocompatible hydrogels mimicking biochemical and biomechanical microenvironments in native tissue are needed for ...
In this paper we introduce common hydrogels and their crosslinking methods and review the latest microscale approaches for ... Microfabrication-based techniques are emerging as powerful approaches to generate such cell-encapsulating hydrogel structures. ... Hydrogels in which cells are encapsulated are of great potential interest for tissue engineering applications. These gels ... Polymers 2012, 4(3), 1554-1579; doi:10.3390/polym4031554. Microscale Strategies for Generating Cell-Encapsulating Hydrogels. ...
Slow release fertilizer hydrogels: a review R. A. Ramli, Polym. Chem., 2019, 10, 6073 DOI: 10.1039/C9PY01036J ... SRFHs are a combination of a super absorbant hydrogel (SAH) and a fertilizer with both water retention and slow release ... To meet these demands, slow release fertilizer hydrogels (SRFH) have been developed. ...
Superabsorbent hydrogels are used quite effectively in diapers and contact lenses. Can their properties be used to help ... Superabsorbant Hydrogels: A Study of the Most Effective Application of Cross-linked Polyacrylamide Polymers Part of the Young ... Superabsorbant Hydrogels: A Study of the Most Effective Application of Cross-linked Polyacrylamide Polymers Part of the Young ... Hydrogels are cross-linked polyacrylamide polymers (PAM). They are made up of water-insoluble acrylamide and potassium acrylate ...
We show features of clays, which are beneficial in the formation of (nano)composites with hydrogels.... ... composites containing hydrogels, materials based on clays are emphasized. ... Can V, Abdurrahmanoglu S, Okay O (2007) Unusual swelling behavior of polymer-clay nanocomposite hydrogels. Polymer 48:5016-5023 ... Polymer Hydrogel-Clay (Nano)Composites. In: Thakur V., Thakur M. (eds) Polymer Gels. Gels Horizons: From Science to Smart ...
... especially for energy storage devices due to their unique combination of advantageous features of conventional polymers and ... Conducting polymer hydrogels are emerging as a promising class of polymeric materials for various technological applications, ... Nanostructured conducting polymer hydrogels for energy storage applications Y. Shi, L. Peng and G. Yu, Nanoscale, 2015, 7, ... Conducting polymer hydrogels are emerging as a promising class of polymeric materials for various technological applications, ...
Polymer networks usually have many entanglements as well as a finite extensibility due to the uncrossability and the full ... Yang, Q.S., Ma, L.H., Shang, J.J.: The chemo-mechanical coupling behavior of hydrogels incorporating entanglements of polymer ... Effects of entanglements and finite extensibility of polymer chains on the mechanical behavior of hydrogels. ... During, C.J., Morman, K.N.: Nonlinear swelling of the polymer gels. J. Chem. Phys. 98, 4275-4293 (1993)CrossRefGoogle Scholar ...
5.14 Synthesis of a Novel Interpenetrating Polymer Network Hydrogel as a Drug Delivery System. Novel IPN hydrogels of chitosan ... 5 Various Chitosan-Based Interpenetrating Polymer Network Hydrogels. 5.1 Semi-interpenetrating Polymer Network of ... Among these modified chitosan-based hydrogel systems, interpenetrated polymer network (IPN) hydrogels have enhanced mechanical ... 5.2 Clarithromycin Interpenetrating Polymer Network Hydrogel. Clarithromycin IPN hydrogel is formed by chemical crosslinking ...
... nanocomposite hydrogel byin situradiation construction, Journal of Applied Polymer Science, 2016, 133, 44. Wiley Online Library ... Temperature-responsiveness and sustained delivery properties of macroporous PEG-co-PNIPAAm-co-PCL hydrogels, Polymer ... Jing Yu, Wei Ha, Jian-nan Sun, Yan-ping Shi, Supramolecular Hybrid Hydrogel Based on Host-Guest Interaction and Its Application ... Arti Vashist, Atul Vashist, Y. K. Gupta, Sharif Ahmad, Recent advances in hydrogel based drug delivery systems for the human ...
Journal of Applied Polymer ScienceVolume 122, Issue 2, Version of Record online: 23 MAY 2011. ...
... a plurality of peptides that are capable of self-assembling into a hydrogel in an aqueous solution and a biocompatible polymer ... "hydrogel hybrid" or "hybrid hydrogel" or "composite" or "hydrogel composite" or "hybrid hydrogel composite" or "hydrogel hybrid ... 2. The hydrogel of claim 1, wherein said biocompatible polymer is a polysaccharide. 3. The hydrogel of claim 1, wherein each ... The biocompatible polymers can be a natural polymer or a synthetic polymer. ...
by Polymer Engineering and Science; Engineering and manufacturing Science and technology, general Crosslinked polymers ... Study on a new polymer/graphene oxide/clay double network hydrogel with improved response rate and mechanical properties. ... Comparing with OR hydrogel, the DN hydrogels exhibit high deswelling rates. For instance, DN-1 hydrogel loses about 80% water ... The compressive strength of DN hydrogels and OR hydrogel is shown in Fig. 6. It can be found that the hydrogels prepared by two ...
Container with heat or cold dispensing material comprising hydrogel with crosslinked hydrophilic polymer. Title Container with ... a space with material having a high heat capacity including a semisolid hydrogel formed by a crosslinked hydrophilic polymer ... containing 90-99.5% of water, based on the sum of polymer and water. ...
We used a hydrogel polymer medium to visualize the growth characteristics of seminal roots. The method is straightforward, and ... of seeds germinated and the roots of all plants that germinated penetrated the hydrogel medium. c) the hydrogel medium is well ... We found that: a) the optimum preparation conditions involve the addition of distilled water at about 98°C to the hydrogel, ...
Biosensor; photonischer Kristall; reponsives Polymer; hydrogel; polymer; Molekulare Erkennung. Abstract. Responsive inverse ... Thermoresponsive polymers and inverse opal hydrogels for the detection of diols. : Couturier, Jean-Philippe; Wischerhoff, Erik ... exploiting the diol/polyol induced shifts of the soluble polymers cloud point, or the induced changes of the hydrogels swelling ... The inverse opals constructed of these thermo- and analyte-responsive hydrogels enabled following the binding of specific diols ...
Polymer" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications ... "Self-assembly of cholesterol tethered within hydrogel networks, ... 10.1016/j.polymer.2016.01.015. Publisher site. See Article on ... Self-assembly of cholesterol tethered within hydrogel networks. Self-assembly of cholesterol tethered within hydrogel networks ... Self-assembly of cholesterol tethered within hydrogel networks. Engberg, Kristin; Waters, Dale J.; Kelmanovich, Shira; Parke- ...
... of medicine from biomass polymer hydrogelsStudy on ultrasound stimulated release of medicine from biomass polymer hydrogels. ...
... the water soluble polymer comprising multiple hydrolytically degradable carbonate linkages in a backbone and, for each ... Because the crosslinking agents (i.e., the polymers of this invention) in the hydrogel are water soluble, the hydrogel can be ... In accordance with this invention, the polymer of this invention is used as the crosslinking agent in the hydrogel. The polymer ... However, branched polymers and star polymers are also contemplated that have two or more linear polymers, at least one of which ...
... hydrogels were prepared by mixing carboxymethyl cellulose (CMC) solution and crosslinked poly(acrylic acid) (cPAA) single IPN ... Interpenetrating polymer network (IPN) hydrogels were prepared by mixing carboxymethyl cellulose (CMC) solution and crosslinked ... Carboxymethyl cellulose Interpenetrating polymer networks Hydrogels Adsorption Methylene blue Copper ions Electronic ... Dragan ES (2014) Design and applications of interpenetrating polymer network hydrogels. A review. Chem Eng J 243:572-590. https ...
... the hydrogel reservoir, and the deflecting polymer membrane. Shrinking of the hydrogel under the application of heat supplied ... Fabrication and testing of thermally responsive hydrogel-based actuators using polymer heater elements for flexible microvalves ... in which the hydrogel is normally swollen and heating opens the valve via membrane deflection. Our prototype hydrogel actuator ... with a normally-closed polymer microvalve design where-by the fluidic channel can be opened and closed via the hydrogel ...
ALSTA Hydrogel - Potassium Polyacrylate Based Super Absorbent Polymer for Agriculture (5 kg) Manure at best prices with FREE ... Potassium Polyacrylate Based Super Absorbent Polymer for Agriculture (5 kg) Manure for Rs. online. ... Hydrogel polymer swells up upon contact with water molecules absorbing up to 400 ??? 600 times its own weight and then acting ... Alsta Hydrogel is a potassium polyacrylate based super absorbent polymer with its safe and nontoxic formulation for use in open ...
EMA 4161C PHYSICAL PROPERTIES OF POLYMERS HYDROGEL SYNTHESIS AND CHARACTERIZATION LABORATORY 1.0 PURPOSE To experimentally ... Hydrogels from EMA 4161c at University of Florida. ... Hydrogels - EMA 4161C PHYSICAL PROPERTIES OF POLYMERS.... This ... E MA 4161C P HYS ICAL PROPERT I ES OF POLY MERS HY DROGEL SYNT H ES IS AND CHARACTER ... Unformatted text preview: EMA 4161C PHYSICAL PROPERTIES OF POLYMERS HYDROGEL SYNTHESIS AND CHARACTERIZATION LABORATORY 1.0 ...
Poly(3-thiopheneacetic acid) hydrogels were fabricated by covalently crosslinking the polymer with 1,1 ′ -carbonyldiimidazole ( ... Hydrogels were found to be electroactive and conductive at physiological pH. Fibroblast and myoblast cells cultured on the ... This is the fi rst time that the potential of a single component CP hydrogel has been demonstrated for cell growth, opening the ... Hydrogels are particularly suitable candidates as scaffolds for tissue engineering because of their hydrated nature, their ...
Hydrogel-Based Conducting Polymer Electrode for Efficient Stimulation of Cells. Research Project ... Journal Article] Bonding of synthetic hydrogels with fibrin as the glue to engineer hydrogel-based biodevices2014. *. Author(s) ... onto hydrogel substrates by the novel interfacial photo-initiated radical polymerization of the polymer of adhesion layer. This ... Presentation] Hydrogel-Based Stretchable Electrodes for Stimulation of Cells and Tissues2014. *. Author(s). M. Nishizawa ...
AbstractWherein the hydrogel comprisingPolyacrylamideAbsorbentInjectableNetwork HydrogelsNanocomposite hydrogelColloid and Polymer ScienceInvention provides a hydrogel compositionInterpenetrated polymer network2016MonomerBiomedicalMultifunctionalTissueHydrophilic polymersPolyethylene glycolChainsPotassium polyacrylateMechanical properties of hydrogelsBiodegradableResponsive HydrogelsCompositionsPorousThereofAqueous solutionApplications require hydrogelsChitosanChemistryFibersPendant acidic or basic groupsForm hydrogelsCopolymersSubstratesPNIPAAmProteinResearchersSolubleResponse of hydrogelsIonicPropertiesMaterialsStimuliCompositionNatural hydrogelsDegradable hydrogelsSwellAlsta HydrogelChemical hydrogels
- According to the study's abstract in the Aug. 13 edition of Science Translational Medicine , median graft survival was more than 100 days in rats treated with the tacrolimus delivered via hydrogel, compared to 33.5 days in rats treated with tacrolimus only and 11 days in rats that were either untreated or treated with hydrogel only. (fiercepharma.com)
- Hydrogels are cross-linked polyacrylamide polymers (PAM). (amnh.org)
- Amazingly, hydrogels can absorb up to 500 times their weight in water, and when their surroundings begin to dry out, the hydrogels, or cross-linked polyacrylamide polymers (PAM), gradually dispense up to 95% of their stored water. (amnh.org)
- By combining two common polymers, polyacrylamide and alginate, scientists at Harvard have created a new hydrogel that is capable of maintaining its elasticity and toughness over multiple stretches, possibly finding use in artificial cartilage, soft robotics, optics, artificial muscle, and as a protective covering for wounds. (scitechdaily.com)
- We found that the polyethylene glycol (PEG)-bonded polyacrylamide (PAM) hydrogel fibers reduced inflammation compared with PAM hydrogel fibers, transdermally glowed, and continuously responded to blood glucose concentration changes for up to 140 days, showing their potential application for long-term in vivo continuous glucose monitoring. (pnas.org)
- The hydrogel consists of polyacrylamide - a water-soluble acrylamide polymer - and a new cross-linking agent called NOCCL. (medicalnewstoday.com)
- Alsta Hydrogel is a potassium polyacrylate based super absorbent polymer with its safe and nontoxic formulation for use in open field and protective cultivation. (flipkart.com)
- Absorbent hydrogels are formed by reacting a protein meal base, a radical initiator and a polymerizable monomer. (google.co.uk)
- The resultant absorbent and superabsorbent hydrogels have high water uptake ratios, and can be utilized for a variety of applications. (google.co.uk)
- c. mixing the degassed mixture to initiate grafting and polymerization to produce the absorbent hydrogel. (google.co.uk)
- f) drying the washed hydrogel to form an absorbent hydrogel having a water uptake greater than a water uptake of the absorbent hydrogel before washing. (google.co.uk)
- 15 . The method of claim 14 , wherein the absorbent hydrogel is a superabsorbent hydrogel. (google.co.uk)
- The present invention relates to improved hydrogel-forming polymer compositions which can be used as absorbents in absorbent structures and absorbent articles such as diapers, sanitary napkins and the like. (ipexl.com)
- Absorbent structures and absorbent articles containing these dried hydrogel-forming polymer materials are also disclosed. (ipexl.com)
- Agricultural potassium polyacrylate super absorbent polymer (SAP) for field crops, horticulture,gardening,trees planting etc. (alibaba.com)
- Super absorbent polymer,SAP,water absorbent polymer: can swell hundreds of times in water to form a clear gel. (alibaba.com)
- Moreover, hydrogels are insoluble crosslinked hydrophilic polymers with special water-absorbent characteristics, used as soil conditioners for various agricultural and industrial applications. (researchandmarkets.com)
- ALSTA Hydrogel is an innovative superior quality high performance super absorbent polymer and water absorber based on cross-linked Potassium polyacrylate polymer. (prfire.co.uk)
- Dynamic metal-ligand coordination allows reversible formation and disruption of hydrogel networks under various stimuli which makes hydrogels self‐healable and injectable. (deepdyve.com)
- We recently developed fluorescent hydrogel microbeads that are transdermally detectable, injectable, minimally invasive, and biocompatible ( 10 ). (pnas.org)
- Scientists at Rice University have combined a derivative of the venom with their injectable hydrogels to create a material that can quickly stop bleeding and protect wounds, even in patients who take anti-coagulant medications. (phys.org)
- The new work builds upon the Rice lab's extensive development of injectable hydrogel scaffolds that help wounds heal and grow natural tissue. (phys.org)
- We report the development of an injectable bioactive hydrogel system containing the key antagonists of Nodal signaling-Cripto-1 receptor antibodies (2B11)-for the creation of embryonic microenvironments and the examination of their effect on tumor reversion treatment using a mouse model. (diva-portal.org)
- We further utilized these aldehyde grafted GAGs to tailor extracellular matrix mimetic injectable hydrogels and evaluated its rheological properties. (diva-portal.org)
- Injectable Hydrogel Properties Influence Infarct Expansion and Extent " by Jamie L. Ifkovits, Elena Tous et al. (upenn.edu)
- They found that the fracture stress of this DN hydrogel is about 20 times larger than those of individual single network hydrogels , Novel polymer--clay nanocomposite hydrogel has been prepared without using any organic crosslinker [4, (thefreelibrary.com)
- By combining PEG precursors with complementary trifunctional crosslinkers, a library of well-defined single-network hydrogels was efficiently constructed via the robust UV-initiated thiol-ene coupling (TEC) chemistry. (diva-portal.org)
- The invention provides a hydrogel composition comprising water and a hydrophilic polymer, wherein the hydrogel composition has (a) an ultimate tensile strength of about 10 kPa or more, (b) a compressive strength of about 70 kPa or more, or (c) an ultimate tensile strength of about 10 kPa or more and a compressive strength of about 70 kPa or more. (freepatentsonline.com)
- The present invention provides a hydrogel composition, preferably for the treatment of wounds, comprising a hydrophilic co-polymer carrying multiple pendant anionic groups, wherein the polymer is derived from a first monomer and a second monomer, wherein both monomers have an octanol:water partition coefficient Log P value of less than 0, and, the Log P value of the first monomer is greater (more positive) than the second monomer. (patentsencyclopedia.com)
- A hydrogel that is the hydrated polymerization product of a monomer mixture that includes a hydrophilic monomer and a polysiloxane-containing monomer. (google.com)
- 1. A silicone hydrogel that is the hydrated polymerization product of a monomer mixture comprising N-vinyl pyrrolidnone, a monofunctional polysiloxanylalkyl monomer, and a polysiloxane-containing monomer having a perfluorinated side chain on a terminal carbon, wherein said silicone hydrogel has an oxygen permeability of at least about 120 Barrers, a water content of at least about 20 weight percent, and a modulus from 61 to 97 g/mm 2 . (google.com)
- 6. The hydrogel of claim 1 wherein the polysiloxane-containing monomer having a perfluorinated side chain is present in the monomer mixture from 25% to 41% by weight of total monomer in the monomer mixture. (google.com)
- By a topology of connection we mean an arrangement of bonds of various types to link monomer units into polymer chains, and crosslink the polymer chains into polymer networks. (imechanica.org)
- These materials may be synthesized for example from monomer(s) or from monomer(s) mixed with polymer(s) in water. (google.com.au)
- Preferred hydrogel-forming polymers having these characteristics can be prepared by polymerizing the acid group-containing monomers in their free acid form at relatively low monomer concentrations, preferably using relatively low polymerization temperatures. (ipexl.com)
- They are often synthesized by polymerizing conductive polymer monomer within a nonconducting hydrogel matrix, resulting in deterioration of their electrical properties. (usda.gov)
- The weight ratio (w/w) of the first monomer/second monomer in the hydrogel composition is preferably equal to or more than about 1. (patentsencyclopedia.com)
- 4. A hydrogel composition according to claim 1, wherein the first monomer is a compound of formula (I) ##STR00004## wherein R5 represents hydrogen or optionally substituted alkyl, preferably methyl or ethyl, R6 represents hydrogen or a cation and R7 represents an optionally substituted alkylene moiety containing 1 to 4 carbon atoms. (patentsencyclopedia.com)
- 5. A hydrogel composition according to claim 4, wherein the second monomer comprises a compound of formula (II) ##STR00005## wherein R1 is an optionally substituted hydrocarbon moiety, R2 is hydrogen or optionally substituted alkyl, and M represents hydrogen or a cation. (patentsencyclopedia.com)
- 6. A hydrogel composition according to claim 5, wherein the weight ratio (w/w) of the first monomer/second monomer is about 2 or more. (patentsencyclopedia.com)
- Orthogonal thermoresponsive properties were also realized by introducing N -isopropyl acrylamide (NIPAM) monomer simultaneously with hydroxyethyl acrylate (HEA) in the pre-gel mixture to produce a statistical 60:40 HEA:NIPAM polymer network. (chemrxiv.org)
- The polymer is useful in making hydrolytically degradable hydrogels which can be used in drug delivery and related biomedical applications. (google.com)
- For biomedical applications, hydrogels are a promising material as they can attain tissue like physical proprieties, can be formed under mild conditions, and can use mild solvents including water, making them biocompatible and if designed appropriately, biodegradable. (termedia.pl)
- Hydrogels have also been used as coatings for various biomedical applications. (google.com.au)
- For that reason, smart physiological response of hydrogels toward changes of physiological variable suggests their use in various biomedical applications . (scirp.org)
- Perception of hydrogels has been established at the very beginning, as cross-linked 2-hydroxyethyl methacrylate (HEMA) hydrogels have been applied in numerous biomedical applications like carrier of drugs, sutures with absorbable capability, osteoporosis and as neoplasm because of their hydrophilic characters . (scirp.org)
- In this chapter, the modern uses of hydrogels in pharmaceutical and biomedical applications are revised following an engineering point of view, i.e. focusing the attention on material properties and process conditions. (intechopen.com)
- Even if the vastness of the field makes its discussion impossible in a single chapter, the presented material can be a good starting point to study the uses of hydrogels in pharmaceutical and biomedical sciences. (intechopen.com)
- Because of the wide spectrum of chemical and mechanical properties as well as their excellent biocompatibility, hydrogels have been extensively investigated for pharmaceutical and biomedical applications [ 2 - 6 ]. (intechopen.com)
- Physical hydrogels are extensively used in a wide range of biomedical applications. (diva-portal.org)
- Since hydrogels have structural and compositional similarities compared to the extracellular matrices and their extensive framework for cellular proliferation and survival, they have long attracted considerable attention for various biomedical purposes [ 9 - 13 ]. (omicsonline.org)
- Hydrogels have been a topic of extensive research in the past decades and their properties as, for example, their high water content and the possible control over the swelling kinetics make them very attractive for biomedical applications [ 12 - 16 ]. (hindawi.com)
- NFC hydrogel in 3D cell culture offers a platform for various biomedical applications. (wikipedia.org)
- However, because the hydrogel expands in water and fluids, the expansion would collapse the tunnel and reduce the ability of the nerve endings to regenerate and connect, [Mohammad Reza Abidian, assistant professor of biomedical engineering, Penn State], said. (medgadget.com)
- We envision that the reported materials and the corresponding methods of remotely manipulating the dynamic hydrogels may serve as a useful blueprint for future adaptive materials used in biomedical applications. (chemrxiv.org)
- Hydrogels, because of their tissue-like properties, have been used as supporting matrices to deliver cells into infarcted cardiac muscle. (mdpi.com)
- Bioactive and biocompatible hydrogels mimicking biochemical and biomechanical microenvironments in native tissue are needed for successful cardiac tissue regeneration. (mdpi.com)
- Many hydrogels, including natural polymer hydrogels, synthetic polymer hydrogels, and natural/synthetic hybrid hydrogels are employed for cardiac tissue engineering. (mdpi.com)
- In this review, types of hydrogels used for cardiac tissue engineering are briefly introduced. (mdpi.com)
- Li Z, Guan J. Hydrogels for Cardiac Tissue Engineering. (mdpi.com)
- Hydrogels in which cells are encapsulated are of great potential interest for tissue engineering applications. (mdpi.com)
- Processes of preparing the hydrogels and uses thereof in pharmaceutical, cosmetic or cosmeceutic applications such as tissue engineering and/or regeneration are further disclosed. (freepatentsonline.com)
- Conducting polymers (CPs) have exciting potential as scaffolds for tissue engineering, typically applied in regenerative medicine applications. (edu.au)
- Hydrogels are particularly suitable candidates as scaffolds for tissue engineering because of their hydrated nature, their biocompatibility, and their tissue-like mechanical properties. (edu.au)
- This is the fi rst time that the potential of a single component CP hydrogel has been demonstrated for cell growth, opening the way for the development of new tissue engineering scaffolds. (edu.au)
- Researchers successfully delivered the immunosuppressant tacrolimus in a self-assembled hydrogel, enabling localized therapy in patients receiving a tissue graft transplant of the leg, hand or face. (fiercepharma.com)
- An improved hydrogel adhesive, particularly adapted for adhesion and contact to tissue. (google.com.au)
- It has been discovered that partially dehydrated hydrogels, in which the hydrogel polymers contain controlled cross-linking, exhibit excellent adhesive properties, particularly in attaching to moist body tissue. (google.com.au)
- Aggressive adhesion develops during the initial phase of tissue contact when the hydrogel is hydrating or rehydrating. (google.com.au)
- Although many adhesive applications, particularly those involving tissue, are included within the purview of the hydrogel compositions of this invention, a preferred use is found as an adhesive for attaching pacing leads to heart tissue, particularly epicardial tissue and other moist internal tissue. (google.com.au)
- The chemistry of some commonly used hydrogel platforms is discussed, and important examples of their use in tissue engineering 3D cancer models are highlighted. (cambridge.org)
- Exploration on hydrogel fibres concerning about smart based application in the medical sector has stimulated great interests for the last couple of years due to its wide range of purposes that include actuators, artificial adhesives, transplantable tissue organs, cell scaffolds, cell therapeutics, wound healing, cartilage or bone regeneration. (scirp.org)
- This is due to the fact that, hydrogel fibers are biocompatible and their similarity about physical properties is in relation with natural tissue. (scirp.org)
- This review article prescribes about the application of hydrogels with diversified prospects in tissue engineering, wound care dressings, soft tissue recovery and plastic surgery. (scirp.org)
- Polyethylene glycol polymers are hydrogels that can be used for tissue sealing and adhesion. (mitchmedical.us)
- Polyethylene glycol polymers, completely synthetic and bioabsorbable, are particularly desirable as tissue sealants because inflammatory potential and risk of viral transmission are eliminated. (mitchmedical.us)
- To address this issue, methods have been developed to "wrap" or "encapsulate" potentially-toxic QDs in bio-inert polymers to facilitate use in living tissue. (wikipedia.org)
- Hydrogels built of custom peptides are a specialty of Hartgerink's lab, which has introduced variations in recent years for tissue growth and healing through the clotting powers of synthetic snake venom. (nanowerk.com)
- Specifically, two MeHA formulations that exhibit similar degradation and tissue distribution upon injection but have differential moduli (∼8 versus ∼43 kPa) were injected into a clinically relevant ovine MI model to evaluate the associated salutary effect of intramyocardial hydrogel injection on the remodeling response based on hydrogel mechanics. (upenn.edu)
- fused deposition modeling of thermoplastics, or on photopolymerization of photosensitive polymer resins ( 4 , 5 ), and have tremendous growth potential for surgical and medical devices ( 4 , 6 ) and scaffolds for tissue repair ( 7 , 8 ). (sciencemag.org)
- Recently, it was reported that introducing a double network (DN) structure for various combinations of hydrophilic polymers is an effective approach to prepare pH- and temperature-responsive hydrogels , DN hydrogels are usually fabricated with a brittle polyelectrolyte (first network) and a ductile neutral polymer (second network) in aqueous solution. (thefreelibrary.com)
- Certain hydrophilic polymers could be used to render the dots water-soluble. (wikipedia.org)
- To meet our goal, we identified a polyethylene glycol (PEG)-based hydrogel to use as a candidate for vaginal packing strategy. (termedia.pl)
- The only experience with the use of polyethylene glycol polymers in laparoscopic urology was a feasibility trial performed by Ramakumar et al. (mitchmedical.us)
- Cosealv is another polyethylene glycol polymer combination that received Food and Drug Administration approval in 2003. (mitchmedical.us)
- Polymer networks usually have many entanglements as well as a finite extensibility due to the uncrossability and the full stretching of the network chains. (springer.com)
- Combined in an 8-to-1 ratio, however, the two polymers form a complex network of cross-linked chains that reinforce one another. (scitechdaily.com)
- The alginate portion of the gel consists of polymer chains that form weak ionic bonds with one another, capturing calcium ions (added to the water) in the process. (scitechdaily.com)
- As a result, the gel expands slightly, but the polymer chains themselves remain intact. (scitechdaily.com)
- By introducing different degradable groups to the polymer chains, the researchers were able to alter how long it took for the hydrogels to degrade. (eurekalert.org)
- As the temperature increases, hydrophobic interactions among hydrophobic segments of the macromolecular chains become strengthened, resulting in inter-macromolecular association through hydrophobic interactions and shrinking of hydrogels. (imechanica.org)
- As one can imagine, during sorption the polymer network chains begin to stretch by the increase in mass uptake. (imechanica.org)
- In presence of water, the polymer chains absorb the moisture by osmosis and swell. (prfire.co.uk)
- These are the network of polymer chains that are water insoluble. (omicsonline.org)
- The polymer chains of hydrogels are cross linked. (omicsonline.org)
- Then we add cross-linker molecules to the foam during the mixing process: these molecules enable to bridge the polymer chains and form the transient polymer gel. (espci.fr)
- This process can last up to seven years, when the biodegradable hydrogels decompose. (amnh.org)
- As previously described , we used commercially available oligomers to develop a two-part solution that when activated via mild base (NaHCO3), created a biodegradable hydrogel based on a thiol-Michael addition reaction. (termedia.pl)
- Biodegradable, anti-adhesive and tough polyurethane hydrogels crosslinked by triol crosslinkers. (nih.gov)
- The mechanical and biodegradable properties of hydrogels are two essential properties for practical biomaterial applications. (nih.gov)
- In this work, a series of biodegradable polyurethane (PU) hydrogels were successfully synthesized using two kinds of triol crosslinkers with different chain structures. (nih.gov)
- The biodegradable long chain crosslinker CAPA can certainly accelerate the degradation of PU hydrogels compared with the GC crosslinked hydrogels. (nih.gov)
- The inverse opals constructed of these thermo- and analyte-responsive hydrogels enabled following the binding of specific diols by the induced shift of the optical stop band. (fraunhofer.de)
- these multiple stimuli-responsive hydrogels have attracted significant research interest because the most pH- and temperature-sensitive dual functional systems have a great importance in biological applications and can well mimic the responsive macromolecules found in nature. (omicsonline.org)
- These polymers are physiologically responsive hydrogels,[ 4 ] where polymer complexes can be swollen as a result of the changing external environment. (pubmedcentralcanada.ca)
- In arid areas, the use of Alsta Hydrogel in sandy (macro porous medium) significantly increases the quality of the plants. (flipkart.com)
- 10. A hydrogel solid in accordance with claim 1, in the form of a reticulated porous sponge. (google.ca)
- 11. A reticulated, porous hydrogel sponge in accordance with claim 10, wherein the polyglucan is amylose. (google.ca)
- 12. A reticulated, porous hydrogel sponge in accordance with claim 10, having a pH of between about 5 and 8. (google.ca)
- 13. A reticulated, porous hydrogel sponge in accordance with claim 10, wherein the average pore size is less than about 1 millimeter. (google.ca)
- In contrast to most hard materials, the threedimensional cross-linked networks of water-soluble polymers (hydrogels) may retain a large amount of water within their porous structure and thus they can undergo large deformations. (omicsonline.org)
- With high surface area and three-dimensional porous nanostructures, the PAni hydrogels demonstrated potential as high-performance supercapacitor electrodes with high specific capacitance (∼480 F·g ⁻¹), unprecedented rate capability, and cycling stability (∼83% capacitance retention after 10,000 cycles). (usda.gov)
- Exploitation of specific drug-polymer interactions result in highly eccentric drug clusters and a percolated porous morphology. (massgeneral.org)
- Above are highly porous, non-degradable hydrogels for load-bearing applications. (massgeneral.org)
- The invention also comprises a process of providing hemostasis at the site of a wound, employing the diester cross-linked polyglucan hydrogels or reticulated sponges thereof. (google.ca)
- 40. The method of claim 31, wherein the hydrogel precursor further comprises an active ingredient selected from the group consisting of a drug, a therapeutic agent, a humectant, and mixtures thereof. (freepatentsonline.com)
- 2. The hydrogel particles of claim 1, which further comprise one or more entrapped substances therein selected from the group consisting of drugs, vitamins, growth factors, hormones, peptides, polypeptides, proteins and oligonucleotides, which are entrapped by entrapping said substances in said hydrogel particles during formation thereof. (google.co.uk)
- The viscoelastic ink used to print this hydrogel composite is an aqueous solution of N,N-dimethylacrylamide, nanoclay, glucose oxidase, glucose, and nanofibrillated cellulose. (wikipedia.org)
- Hydrogels copolymers N,N-dimethylacrylamide (DMA) and maleic acid (MA) were prepared by free-radical polymerization at 56°C in aqueous solution, using N,N-methylenebisacrylamide (NMBA) as cross-linking agent and potassium persulfate (KPS) as initiator. (hindawi.com)
- To overcome this limitation, modifications of chitosan to develop hydrogel systems are being investigated by researchers. (springer.com)
- This chapter describes the preparations and properties, in terms of drug-releasing performance, of various chitosan-based IPN hydrogels for controlling drug release. (springer.com)
- Thermal treatment of chitin with a strong aqueous alkali such as sodium hydroxide or potassium hydroxide (40-50% at 100 °C) to remove some or all of the acetyl groups from the polymer produces partially deacetylated chitin, regarded as chitosan. (springer.com)
- Chitosan and Starch-Based Hydrogels via Graft Copolymerization. (worldcat.org)
- Polymer Research Laboratory, Department of Chemistry, Govt. (wiley.com)
- Because of the molecular diversity in hydrogels, the chemistry of fatigue holds the key to the discovery of hydrogels of properties previously unimagined. (imechanica.org)
- In the case of hydrogels, chemistry plays a role in how the material is transformed from a liquid compounded solution or suspension into a cohesive adhesive with a high water content. (polymerscience.com)
- The New Materials and Supramolecular Spectroscopy research team at the Department of Physical Chemistry in the Faculty of Sciences and Technology of the UPV/EHU is a pioneering one in the investigation of hydrogels and is led by Dr. Issa A. Katime, author of the only book published in Spanish on the topic. (bio-medicine.org)
- Here, we present a long-term in vivo glucose monitoring method using glucose-responsive fluorescent hydrogel fibers. (pnas.org)
- A hydrogel made at Rice University consists of custom peptide fibers with spaces - "missing teeth" - that can trap and deliver hydrophobic small-molecule drugs. (nanowerk.com)
- We load them into the interstices of these fibers, and they can be delivered wherever we inject the hydrogel. (nanowerk.com)
- A hydrogel developed at Rice University is designed to trap small-molecule drugs in hydrophobic spaces inside its constituent fibers. (nanowerk.com)
- In the lab's earlier hydrogels, proteins or small molecules are trapped in the gel created by the microscopic fibers. (nanowerk.com)
- The pH sensitive hydrogels containing pendant acidic or basic groups such as carboxylic acids, sulfonic acids, primary amines, or ammonium salts which change ionization in response to change in the pH have become the subject matter of major interest for use as carriers in drug delivery research [ 17 - 19 ]. (hindawi.com)
- 4 ] Some stimuli-sensitive polymers contain pendant acidic or basic groups that either accept or release protons in response to stimuli, i.e. changes in environmental pH. (pubmedcentralcanada.ca)
- The underlying thermoresponsive water-soluble copolymers and hydrogels exhibit a coil-to-globule or volume phase transition, respectively, of the LCST-type. (fraunhofer.de)
- In the form of homopolymers or as copolymers with thermosensitive units, like the N-isopropylacrylamide (Nip), the hydrogels may constitute useful materials responding to various external stimuli. (omicsonline.org)
- In order to study the effects of comonomer composition and the cross-linker content on the swelling of polymers, the equilibrium swelling values of DMA homopolymer and DMA-MA copolymers in buffer solutions with different pH values at room temperature were determined. (hindawi.com)
- We present the design, fabrication and characterization of a mechanically flexible diaphragm-based microvalve actuator employing a reservoir of the thermally responsive hydrogel PNIPAAm and a conductive nanocomposite polymer (C-NCP) heater element. (spie.org)
- In this study we therefore investigate the effects of a modified PNIPAAm hydrogel on cell adhesion and survival of primary human tenon fibroblasts (HTF) in vitro and assess its ability to take up and release the antiproliferative compound paclitaxel. (arvojournals.org)
- Standard culture dishes were coated with a 2µm thick layer of modified PNIPAAm hydrogel. (arvojournals.org)
- Modified PNIPAAm hydrogel appears to be anti-adhesive to HTF cells. (arvojournals.org)
- Bueno VB, Petri DFS (2014) Xanthan hydrogel films: molecular conformation, charge density and protein carriers. (springer.com)
- The hydrogel is improved by means of its resistance to the formation of calcium, lipid and protein deposits thereon. (google.com)
- More specifically, this invention relates to covalent modification of the polymer hydrogel forming the contact lens surface or matrix with a surfactant in order to prevent or substantially reduce the formation of calcium, lipid and protein deposits on the lens when worn on the human eye. (google.com)
- The composition of the hydrogels was also found to modulate release of therapeutic protein such as FGF-2, demonstrating controlled release (60%) for over 14 days. (diva-portal.org)
- Besides, the hydrogels also show excellent antifouling ability of protein and anti-adhesion of cells. (nih.gov)
- Because it is a not a biological extract, it provide a better control of the composition of cells' environment: control over growth factor incorporation, attachment factor incorporation, ECM protein incorporation, rigidity of the hydrogel. (sigmaaldrich.com)
- We demonstrate the additive manufacturing of complex three-dimensional (3D) biological structures using soft protein and polysaccharide hydrogels that are challenging or impossible to create using traditional fabrication approaches. (sciencemag.org)
- In June, Harvard University researchers announced that they have developed a system for releasing high doses of drugs in short bursts using ultrasound and self-healing hydrogel. (fiercepharma.com)
- Researchers in the U.K. have developed a technique to better predict results in liver cancer when drug-laden polymer beads are used to deliver medicines. (fiercepharma.com)
- To create the new hydrogel, the researchers combined two common polymers. (scitechdaily.com)
- Beyond artificial cartilage, the researchers see potential for the new hydrogel in soft robotics, in optics, in artificial muscle, and as a protective covering for wounds. (scitechdaily.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 Advances in Electroconductive Hydrogels. (waset.org)
- Rice University researchers Jeffrey Hartgerink, left, and Vivek Kumar led research that combines a derivative of snake venom with their nanofiber hydrogel to help encourage blood clotting in wounds, even for patients who take anti-coagulant medications. (phys.org)
- The researchers also tested several other options: the hydrogel without batroxobin, the batroxobin without the hydrogel, a current clinical hemostat known as GelFoam and an alternative self-assembling hemostat known as Puramatrix and found that none were as effective, especially in the presence of anti-coagulants. (phys.org)
- A team of researchers from Penn State and University of Michigan have developed a way of building hydrogel tunnels that can guide the natural growth of nerve endings. (medgadget.com)
- The researchers used agarose, a hydrogel that is permeable and more likely to be accepted by the body. (medgadget.com)
- The researchers tested the three designs - plain hydrogel, hydrogel with fully-coated PEDOT wall, and hydrogel with a partially coated PEDOT wall - by implanting the device in 10 mm nerve gaps in rats and measuring the muscle mass and strength of muscle contractions at the end of the nerves. (medgadget.com)
- Duke University researchers created a hydrogel that appears to be as strong and flexible as human cartilage. (bigthink.com)
- researchers have now created a hydrogel that could absorb the excess joint fluid that arises with disease, as well as deliver medications to affected joints. (medicalnewstoday.com)
- The researchers now plan to test a nano-sized form of the hydrogel in mouse models of rheumatoid arthritis. (medicalnewstoday.com)
- A water soluble polymer is provided having two or more oligomers linked to each other by hydrolytically degradable carbonate linkages. (google.com)
- Due to the resulting modulation of the overall hydrophilicity of the systems and the consequent shift of their phase transition temperature, the usefulness of such systems for indicating the presence of catechols, saccharides, and glycopolymers was studied, exploiting the diol/polyol induced shifts of the soluble polymers cloud point, or the induced changes of the hydrogels swelling. (fraunhofer.de)
- Conjugation of agents having a known or potential therapeutic benefit to water soluble, non-immunogenic polymers can impart to the agent desirable characteristics including, among others, improved solubility, greater stability, and reduced immunogenicity. (google.com)
- Hydrogels constitute a broad class of materials which swell extensively in water but are not completely water soluble. (google.com.au)
- Hydrogels are hydrophilic in nature with macromolecular groups, produced by chemical or physical crosslinking of soluble polymers. (scirp.org)
- The hydrogels segment is projected to grow at a higher CAGR than water-soluble ones, because of the former's higher efficacy of absorbing water. (researchandmarkets.com)
- Representative bonds and complexes in hydrogels include covalent bonds (static or dynamic), ionic bonds, hydrogen bonds, hydrophobic interaction, dipole-dipole interaction, pai-pai stacking, and host-guest interaction. (imechanica.org)
- Hydrogels can easily swell and de-swell water in a reversible direction, showing specific environmental stimuli responsive for example pH, temperature and ionic potency. (scirp.org)
- Ionic/ionizable groups of the L-valine, L-phenylalanine and L-histidine residues are able to modify the swelling properties of the hydrogel on the basis of their thermodynamic characteristics. (omicsonline.org)
- The swelling of hydrogels can be dependent on various parameters, such as pH, temperature, ionic strength of the surrounding medium and external applied electric and electromagnetic fields. (omicsonline.org)
- Stimuli-sensitive hydrogels have been stimulated by pH, ionic strength, temperature and electromagnetic radations. (pubmedcentralcanada.ca)
- The HydroMatrix scaffold self-assembles from fluid precursors into a highly cross-linked peptide 3-dimensional hydrogel in response to changes in temperature or ionic strength. (sigmaaldrich.com)
- SRFHs are a combination of a super absorbant hydrogel (SAH) and a fertilizer with both water retention and slow release properties. (rsc.org)
- These properties are what make hydrogels attractive to the agricultural world. (amnh.org)
- Alexandre M, Dubois P (2000) Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials. (springer.com)
- The hybrid hydrogels are characterized by controllable mechanical and biological properties which can be adjusted by controlling the concentration ratio of the peptides and the polymer, and which average the mechanical and biological properties of the peptides and the polymer. (freepatentsonline.com)
- Study on a new polymer/graphene oxide/clay double network hydrogel with improved response rate and mechanical properties. (thefreelibrary.com)
- One of the unique properties of temperature-responsive polymers is the presence of a volume phase transition temperature (VPTT). (thefreelibrary.com)
- The incorporation of clay markedly improves not only the mechanical and swelling-deswelling properties but also the spatial homogeneity of the hydrogels. (thefreelibrary.com)
- We found that the DN hydrogels exhibited extraordinary swelling/deswelling and mechanical properties because of their unique organic (polymer) and inorganic (GO and clay) network. (thefreelibrary.com)
- Dai H, Ou S, Huang Y, Liu Z, Huang H (2017) Enhanced swelling and multiple-responsive properties of gelatin/sodium alginate hydrogels by the addition of carboxymethyl cellulose isolated from pineapple peel. (springer.com)
- This study reports the development of the fi rst single component CP hydrogel that is shown to combine both electro-properties and hydrogel characteristics. (edu.au)
- A new design of Eu‐containing polymer hydrogels showing fast self‐healing and tunable fluorochromic properties in response to five different stimuli, including pH, temperature, metal ions, sonication, and force, is reported. (deepdyve.com)
- This chapter provides information and a classification of synthetic polymer hydrogels in accordance with their chemical structure, properties, and applications. (aston.ac.uk)
- Hydrogel materials can be generated with a wide range of physical and chemical properties, based on starting subunits and reaction conditions. (termedia.pl)
- The change in rheological and mechanical properties for some ionotropic cross-linked metal-alginate hydrogel complexes in particularly copper-alginate membranes in the presence of some organic solvents (benzene, toluene, xylene, carbon tetrachloride, ace-tone, chloroform, dichloroethane, isobutyl alcohol and ethyl alcohol) or buffer solutions (acetates, borates and universal buffers) have been investigated. (scirp.org)
- Ozeroglu, C. and Birdol, A. (2009) Swelling properties of acrylamide-N,N-methylene bis (acrylamide) hydrogel synthesized by using meso-2,3-dimercaptosuccinic acidcerium (IV) redox couple. (scirp.org)
- OPERM TM F40, F60, HDK TM and OPERM TM 15, 30 contact lens blanks, are rigid fluoro-silicone and silicone-acrylate polymers respectively ranging from ample to low oxygen permeability with outstanding physical properties. (opri.net)
- Different combinations of PEG peptide conjugates assemble into PEG peptide networks and hydrogels with distinctly different thermal stabilities, supramolecular, and rheological properties, reflecting the peptide dimer affinities. (diva-portal.org)
- The specific interactions involved in peptide dimerization thus provides means for programmable and reversible self-assembly of hydrogels with precise control over rheological properties, which can significantly facilitate optimization of their overall performance and adaption to different processing requirements and applications. (diva-portal.org)
- Consequently, the diffusion time of secondary network is a promising parameter to control and that enables the fabrication of PEG hydrogels with a wider window of mechanical and swelling properties. (diva-portal.org)
- Our focus in this area is to explore drug-polymer interactions during manufacturing processes and use them to our benefit in obtaining clinically optimized mechanical properties. (massgeneral.org)
- The degradation of these hydrogels was a process of continuous erosion from the surface to interior, which contributes to the high remain of mechanical properties after 30 days-degradation. (nih.gov)
- The resultant hydrogel actuators - crosslinked with either a styrenated viologen dimer (2V 4+ -St) or hexamer (6V 12+ -St) - were exposed to red or blue light, or heat, for up to 5 h, and their rate of contraction, as well as the corresponding changes in their physical properties (i.e., stiffness, tensile strength, Young's modulus, etc.), were measured. (chemrxiv.org)
- The newly developed conducting polymer hydrogels exhibit high performance when applied as active electrode materials for electrochemical capacitors or as functional binder materials for high-energy lithium-ion batteries. (rsc.org)
- Usually, such kind of hydrogel systems can be served as functional materials with potential applications in the fields of drug delivery, microlenses, sensors, and so forth. (thefreelibrary.com)
- Those multistimuli responsive fluorochromic hydrogels illustrate a new pathway to make smart optical materials, particularly for biological sensors where multistimuli response is required. (deepdyve.com)
- Polymer hydrogels are a rapidly developing group of materials, gaining wide application in different fields, such as pharmaceuticals, medicine, and agriculture. (aston.ac.uk)
- From the perspective of application, a s the property space spans and applications proliferate, hydrogels-like all materials-will be used under conditions that push their limits. (imechanica.org)
- Skylar Tibbits is the director of the Self-Assembly Lab at MIT , and worked with the Stratasys Materials Group to produce a composite polymer composed of highly hydrophilic elements and non-active, rigid elements. (wikipedia.org)
- Such polymer materials have relatively high gel volume and relatively high gel strength as measured by shear modulus of the hydrogel which forms therefrom. (ipexl.com)
- Such polymer materials also contain relatively low levels of extractable polymer material which can be extracted therefrom by contact with synthetic urine. (ipexl.com)
- Conducting polymer hydrogels represent a unique class of materials that synergizes the advantageous features of hydrogels and organic conductors and have been used in many applications such as bioelectronics and energy storage devices. (usda.gov)
- Montmorillonite reinforced polymers are a new development in the area of nanocomposite materials. (unt.edu)
- Environmentally responsive (ER) hydrogels are one of such materials. (imechanica.org)
- A polymer is a blend of materials created by linking the molecules of different chemical substances. (encyclopedia.com)
- Water absorbing materials present in ALSTA Hydrogel find widespread application in soil conditioning and as substrate enhancer in farming, agriculture, horticulture, arboriculture, hydro-seeding, hydroponics etc. (prfire.co.uk)
- The task of the New Materials and Supramolecular Spectroscopy research team at the Faculty of Sciences and Technology of the University of the Basque Country (UPV/EHU) has been to provide an answer to this problem by using intelligent nano-hydrogels - small particles capable of detecting diseased cells and releasing the medication only where required. (bio-medicine.org)
- Specifically, biological hydrogels composed of polysaccharides and/or proteins are a class of materials that are challenging to 3D print because they must first be gelled in situ during the fabrication process and then supported so that they do not collapse or deform under their own weight. (sciencemag.org)
- Such hydrogels show interesting switchable ON/OFF luminescence along with the sol-gel transition through the reversible formation and dissociation of Eu-IDA complexes upon various stimuli. (deepdyve.com)
- Although conventional hydrogels show limited changes in the equilibrium swelling with the change of the surrounding environment, polyelectrolyte hydrogels show various unique responses to environmental stimuli including electrically-induced chemomechanical contraction similar to biological responses [ 14 - 17 ]. (omicsonline.org)
- To develop hydrogels that are sensitive to stimuli, i.e. pH, in the cul-de-sac of the eye for providing a prolonged effect and increased bioavailability with reduction in frequency of administration. (pubmedcentralcanada.ca)
- In many applications of ER hydrogels, it is very important that the volume change of hydrogels as a function of environmental stimuli and time can be precisely controlled, which requires high fidelity constitutive models that can be combined with numerical methods, such as finite element methods. (imechanica.org)
- The invention further provides methods for producing a hydrogel composition. (freepatentsonline.com)
- 9. A hydrogel composition according to claim 3 for the treatment of a wound in a human or non-human mammal. (patentsencyclopedia.com)
- 10. A hydrogel composition according to claim 9, wherein the wound is a chronic ulcerous skin lesion. (patentsencyclopedia.com)
- 11. A hydrogel composition according to claim 10, wherein the wound is selected from venous leg ulcers, venous foot ulcers, arterial leg ulcers, arterial foot ulcers, decubitus ulcers (e.g. pressure sores, bedsores), post-surgical ulcerous lesions and chronic burn lesions. (patentsencyclopedia.com)
- Hydrogels are composed of hydrophilic homopolymer or copolymer network and can swell in the presence of water or physiological fluids. (hindawi.com)
- 1 , 2 ] These hydrogels exhibit a thermodynamic capability with water, which allow them to swell in aqueous media. (pubmedcentralcanada.ca)
- Hydrogels were either allowed to swell with 10-6M paclitaxel or PBS alone. (arvojournals.org)
- These hydrogels can swell up by absorption but cannot be dissolved in a liquid. (bio-medicine.org)
- ALSTA Hydrogel is highly effective when used in large scale farming and agricultural applications particularly during germination and development of root system. (prfire.co.uk)
- Irrespective of soil type, ALSTA Hydrogel ensures proper plant biomass development and growth. (prfire.co.uk)
- Chemtex Speciality Ltd. a pioneer name in the field of specialty chemical manufacturers and suppliers globally presents ALSTA Hydrogel as a simple easy to use eco- friendly product that farmers and agronomists can effectively use to reduce water consumption without compromising on plant growth and yield and also as the best choice for growing lush green crops even in dry drought conditions. (prfire.co.uk)
- Physical and chemical hydrogels concept, on the left of the figure it represents about the chemical crosslinking network structure is observed and the right side represent about physical cross-linking . (scirp.org)
- The nature of connections are different for physical and chemical hydrogels. (omicsonline.org)
- For physical hydrogels they are held by either electrostatic forces/ hydrogen bonds/ interactions where as for chemical hydrogels they are held by permanent covalent bonds. (omicsonline.org)