Search results for "Hydrogel composite"

showing 3 items of 3 documents

Electrically conductive hydrogel composites made of polyaniline nanoparticles and poly(N-vinyl-2-pyrrolidone)

2006

Abstract A novel electrically conductive composite material, consisting of polyaniline (PANI) nanoparticles dispersed in a polyvinyl pyrrolidone (PVP) hydrogel, was prepared ‘in situ’ by water dispersion polymerisation (DP) of aniline using PVP as steric stabiliser, followed by γ-irradiation induced crosslinking of the PVP component. Conversion yield of aniline into PANI particles was determined via HPLC and gas chromatography, while structural confirmation of the synthesised polymer was sought by FTIR. Morphology and dimensions of PANI particles into the coloured, optically transparent hydrogel was determined by electronic microscopy; moreover, swelling behaviour of composite hydrogels in …

Conductive polymerDispersion polymerizationchemistry.chemical_classificationHydrogel compositeConductivityMaterials sciencePolymers and PlasticsPolyanilineOrganic ChemistryNanoparticlePolymerchemistry.chemical_compoundAnilinechemistryChemical engineeringPolymer chemistryPolyanilineSelf-healing hydrogelsMaterials ChemistrySettore CHIM/07 - Fondamenti Chimici Delle TecnologieCyclic voltammetryPolymer
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Poly-l-Lactic Acid Nanofiber-Polyamidoamine Hydrogel Composites: Preparation, Properties, and Preliminary Evaluation as Scaffolds for Human Pluripote…

2016

Electrospun poly-l-lactic acid (PLLA) nanofiber mats carrying surface amine groups, previously introduced by nitrogen atmospheric pressure nonequilibrium plasma, are embedded into aqueous solutions of oligomeric acrylamide-end capped AGMA1, a biocompatible polyamidoamine with arg-gly-asp (RGD)-reminiscent repeating units. The resultant mixture is finally cured giving PLLA-AGMA1 hydrogel composites that absorb large amounts of water and, in the swollen state, are translucent, soft, and pliable, yet as strong as the parent PLLA mat. They do not split apart from each other when swollen in water and remain highly flexible and resistant, since the hydrogel portion is covalently grafted onto the …

Materials Chemistry2506 Metals and AlloysPluripotent Stem CellsAgmatinePolymers and PlasticsDouble bondpolyamidoaminesPolyestersCell Culture TechniquesNanofibersBioengineering02 engineering and technology010402 general chemistry01 natural sciencesBiomaterialsPolyamidoaminePolyaminesMaterials ChemistryHydrogel compositehuman pluripotent stem cellHumansatmospheric pressure nonequilibrium plasmaInduced pluripotent stem cellatmospheric pressure nonequilibrium plasma; electrospun poly-l-lactic nanofibers; human pluripotent stem cells; poly-l-lactic acid-AGMA1 hydrogel composites; polyamidoamines; biotechnology; bioengineering; biomaterials; polymers and plastics; materials chemistry2506 metals and aloyschemistry.chemical_classificationAddition reactionPolymers and PlasticAqueous solutionTissue ScaffoldsHydrogels021001 nanoscience & nanotechnologyBiomaterial0104 chemical sciencesChemical engineeringchemistryCovalent bondNanofiberelectrospun poly-l-lactic nanofiberpoly-l-lactic acid-AGMA1 hydrogel compositeAmine gas treating0210 nano-technologyBiotechnology
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Synthesis, Characterization and Sorption Capacity Examination for a Novel Hydrogel Composite Based on Gellan Gum and Graphene Oxide (GG/GO)

2020

A novel hydrogel composite based on gellan gum and graphene oxide (GG/GO) was synthesized, characterized and tested for sorption capacity in this work. The microstructural, thermogravimetric and spectroscopic analysis confirmed the formation of the GG/GO composite. Comparative batch sorption experiments revealed a sorption capacity of the GG/GO composite for Zn (II) ions of approximately 2.3 higher than that of pure GG. The GG/GO composite exhibits a maximum sorption capacity of 272.57 mg/g at a pH of Zn (II) initial solution of 6. Generally, the sorption capacity of the sorbents is approximately 1.5 higher in slightly acidic conditions (pH 6) comparative with that for strong acidic conditi…

Thermogravimetric analysisPolymers and PlasticsIon exchangehydrogel compositeComposite numberOxidezinc sorptionSorptionGeneral ChemistryArticleGellan gumlcsh:QD241-441chemistry.chemical_compoundlcsh:Organic chemistrychemistryChemisorptionMonolayergraphene oxidegellan gumNuclear chemistryPolymers
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