Studies on Adsorption Property for Metal Ions of Carboxymethyl Chitosan |
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| Authors: | LIN You-Wen CHEN Wei LUO Hong-Bin LI Chun-Yan LIN Xin-Hua |
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| Affiliation: | Deportment of Chemistry, Fujian Medical University, Fuzhou 350004 |
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| Abstract: | Chitosan is a polymer, which contains β-1, 4-linked α-amino-2-deoxy-D-glucopyranose repeat units and is easily derived from chitin by N-deacetylation. Since chitosan is biodegradable, relatively nontoxic, nonimmunogenic, much research has been directed toward its use in medical applications[1].It also has been suggested for use as chelating agent for metals, since the primary amino group and hydroxyl functionalities at the ring[2]. Chitosan is only soluble in aqueous solution of some acids, so it becomes a limitation. The carboxymethyl chitosan (CMCS),a water-soluble derivative of chitosan, was synthesized by chemical modification with ClCH2COOH and chitosan[3]. It was amphoteric polyelectolyte with stronger chelating ability for metals because of introduction of-COOH. |
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