壳聚糖改性的高分子表面活性剂的合成与性能  

Synthesis and properties of chitosan modified polymer surfactant

作　　者：刘杭[1] 刘亚飞[1] 黄鑫[1] 宋剑[1] 张彰[1] 

机构地区：[1]上海大学环境与化学工程学院,上海200444

出　　处：《化学研究》2016年第3期374-379,共6页Chemical Research

基　　金：国家重大科技专项(2011ZX05011-004-007HZ)

摘　　要：以商品壳聚糖(CTS)为原料,通过对-NH_2的化学改性,合成制备了壳聚糖改性的水溶性两性离子表面活性剂.采用正交试验法对合成反应工艺作了优化;通过红外光谱(IR)、核磁共振(H-NMR)及元素分析(EA)等方法对烷基壳聚糖中间体(RCTS)与最终产物,即烷基壳聚糖磺酸季铵盐(SRCTS)的分子结构进行了表征,并对SRCTS的水溶性、表面张力以及泡沫性能作了初步的探索.结果表明:经改性的SRCTS具有良好的表面活性与泡沫稳定性,其最低表面张力值可降至29.1mN/m;泡沫半衰期可提高65%.Chitosan amphoteric ionic surfactant derivatives were prepared via chemical modification of-NH_2 by taking chitosan（CTS）as raw material.The method of orthogonal experiment was applied to seek optimum synthetic process of final products.With IR,NMR and EA method,the structures of intermediate products（RCTS）and final products（SRCTS）were characterized.Then the water-solubility,surface tension and foam performance of the final products were studied preliminarily.Results show that the final products had good surface activity and foam stability,the minimum surface tension could be lowed to 29.1mN·m-1;the foam half-life was improved by 65%.

关 键 词：壳聚糖改性 N-烷基化 两性表面活性剂 泡沫性 

分 类 号：O636.9[理学—高分子化学]