壳聚糖的改性及其在废水处理中的应用

综述了近几年国外对壳聚糖改性衍生物的合成及其在重金属捕集性能方面的研究成果,重点介绍了交联壳聚糖、N-酰化壳聚糖、多胺类接枝壳聚糖、氨基酸接枝壳聚糖、含硫壳聚糖衍生物以及其它杂环接枝壳聚糖的合成和对多种金属离子的捕集情况。今后研究方向为:根据物质结构和性能的关系,开发更加稳定、高效、低毒的产物,并实现生产工艺的绿色化和无污染化。

Chemical Modification of Chitosan and Application in Water Treatment

The recent progress in synthesis and application of adsorbents for metal ions,which were based on chitosan and its derivates,was summarized in this article.Chemical modification and synthesis of chitosan derivates were introduced with emphasis,such as crosslink,N-acylate,graft copolymerization.Meanwhile,the adsorption for metal ions on such chitosan derivates was introduced.Further investigation should be made to develop more stable,effective and less toxic products according to the relation between their structures and performances.More attention should be paid to research on their producing techniques.