Chitosan-graft-polyaniline-based hydrogels: Elaboration and properties
| Autor: | Pierre Marcasuzaa, Francis Ehrenfeld, Abdel Khoukh, Jacques Desbrières, Stéphanie Reynaud |
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| Přispěvatelé: | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Magnetic Resonance Spectroscopy
Materials science Polymers and Plastics Polymers Composite number Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences Biomaterials Chitosan chemistry.chemical_compound Polyaniline Polymer chemistry Materials Chemistry Copolymer medicine Solubility Mechanical Phenomena Conductive polymer Aniline Compounds Molecular Structure Electric Conductivity Hydrogels Hydrogen Bonding [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences [CHIM.POLY]Chemical Sciences/Polymers chemistry Chemical engineering Self-healing hydrogels Swelling medicine.symptom Rheology 0210 nano-technology Oxidation-Reduction |
| Zdroj: | Biomacromolecules Biomacromolecules, American Chemical Society, 2010, 11 (6), pp.1684-1691. ⟨10.1021/bm100379z⟩ |
| ISSN: | 1525-7797 1526-4602 |
| Popis: | International audience; Intrinsically conducting polymers are of great interest for a large number of applications. But among the major drawbacks are their low solubility in common solvents and their poor mechanical properties. Elaboration of composites associating a matrix, bringing its mechanical properties, and polyaniline, as the conducting polymer, is a way of overcoming these disadvantages. Chitosan-graft-polyaniline copolymers were synthesized by simple oxidative method. The grafting reaction was quite complete, and it was found that the copolymers cross-linked to yield a composite hydrogel in which the polyaniline was homogeneously embedded. The conductivity of precursor (block copolymer) and gels was found to be larger than 10-2 S •cm-1. The composite gels were characterized in terms of swelling and rheological properties. They can be classified as "superabsorbent" hydrogels, and the swelling is reversible. The composite gels were then successfully used as actuators. |
| Databáze: | OpenAIRE |
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