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Preparation of carboxymethyl chitosan in aqueous solution under microwave irradiation
1College of Chemistry, South China University of Technology, Guangzhou 510640, China. chhcge@scut.edu.cn
Abstract:
Carboxymethyl chitosan was prepared by reacting chitosan with chloroacetic acid in water under microwave irradiation. The effect of the reaction conditions was investigated and optimal conditions were identified. The influence of mass ratio of chloroacetic acid to chitosan, microwave power and pH on the degree of substitution or intrinsic viscosity were further studied. The degree of substitution of the carboxymethyl chitosan synthesized exceeded 0.85.
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