【摘要】 综述了近年来以壳聚糖和壳聚糖衍生物为原料的金属离子吸附剂的研究进展。重点介绍了壳聚糖及其衍生物的交联和功能化反应,以及交联后的树脂对多种金属离子的吸附情况。常用的交联剂包括戊二醛、甲醛及环氧氯丙烷、(聚)乙二醇双缩水甘油醚等,壳聚糖树脂的功能化主要包括向其中引入冠醚、羧甲基等功能团,其中羧甲基化是最常用最有效的方法。另外,还介绍了金属离子模板壳聚糖树脂以及基于壳聚糖衍生物的蛇笼树脂的合成。更多还原

【Abstract】 The recent progress in adsorbents for metal ions based on chitosan and its derivates was summarized in this article. Crosslink and chemical modification of chitosan and its derivates was introduced with emphasis, as well as the adsorption of metal ions of the crosslinked resin. The common cross-linking agent included glutaraldehyde, formaldehyde, epoxy chloropropane and (poly)ethylene glycol bisglycidyl ether etc. The introduction of functional groups such as carboxymethyl and crown ether to chitosan was the common chemical modification means, especially the introduction of carboxymethyl. The synthesis of chitosan resins using metal ions as templates and snake-cage resins based on chitosan derivates was also summarized in this paper.更多还原