壳聚糖/纳米TiO2复合膜的制备和性能

被引：45

作者：

闻燕

杜予民

李湛

机构：

[1] 武汉大学资源与环境科学学院

来源：

武汉大学学报(理学版) | 2002年 / 06期

关键词：

壳聚糖; 纳米TiO2; 复合膜; 抗水性;

D O I：

10.14188/j.1671-8836.2002.06.014

中图分类号：

TB43 [薄膜技术];

学科分类号：

0805 ;

摘要：

用阴离子表面活性剂十二烷基磺酸钠 (SDS)改性的纳米TiO2 ,以不同掺杂比与 2 %壳聚糖醋酸溶液相混合 ,用流延法制得分散比较均匀的纳米复合膜用FT IR ,XRD及TEM表征了其结构 ,并测试了透光率、水蒸汽透过率及力学性能结果表明 :改性纳米TiO2 的大量表面羟基和壳聚糖分子之间有较强的氢键作用 ;纳米TiO2的适当加入有利于提高膜的抗水性当纳米TiO2 的掺杂比为 1%时 ,复合膜的湿态抗张强度和抗水性分别为 2 7.2 5MPa和 45 .6 % ,与壳聚糖膜相比 ,分别提高了 40 %和 11.6 % .

引用

页码：701 / 704

页数：4

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