SYNTHESIS OF CHITIN DERIVATIVES AND THEIR METAL-COMPLEXES

被引：9

作者：

CHOI, KS

机构：

[1] Department of Industrial Chemistry, Hanyang University, Seoul

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1990年 / 33卷

关键词：

D O I：

10.1002/masy.19900330106

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thiosemicarbazide, phosphoric acid and amidoxime derivatives of chitosan were synthesized and their ability for metal ion adsorptions was discussed. Thiosemicarbazide derivative, synthesized by treating chlorodeoxychitosan with ammonium thiocyanate followed by treatment with hydrazine, was considered to have cross‐linked network structure. Phosphoric acid derivative containing both N‐phosphonic acid and phosphoric acid groups was synthesized by cyanoethylation of chitosan using acrylonitrile, followed by treatment with hydroxylamine. These derivatives were found to adsorb effectively infinitesimal concentration (ppb order) of uranyl ion in seawater. Stability constants of some metal ion chitosan chelates were determined. To improve the selectivity in the adsorption of metal ions, a novel method utilizing metal ion as a template was adopted, and the results are discussed. Copyright © 1990 Hüthig & Wepf Verlag

引用

页码：55 / 63

页数：9

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