Journal
BIOMACROMOLECULES
Volume 11, Issue 6, Pages 1684-1691Publisher
AMER CHEMICAL SOC
DOI: 10.1021/bm100379z
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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.
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