PVA基聚离子渗透汽化膜在异丙醇/水溶液中的溶胀特性研究  

Swelling property of polyvinyl alcohol-baed polyelectrolyte pervaporation membrane in isopropyl alcohol-water solution

作　　者：陈保红[1] 刘雪春[2] 秦培勇[1] 陈翠仙[2] 李继定[2] 

机构地区：[1]北京化工大学生命科学与技术学院,北京100029 [2]清华大学化工系,北京100084

出　　处：《膜科学与技术》2009年第4期68-71,共4页Membrane Science and Technology

基　　金：国家自然科学基金资助项目(20806006)

摘　　要：用不同离子对PVA膜材料进行了改性,得到了不同结构的聚离子膜材料.在60℃下测定了的PVA聚离子膜在不同浓度的异丙醇/水体系中的溶胀特性,用气相色谱对其溶胀特性进行分析,并就离子取代对膜溶胀性能的影响进行了分析.实验结果表明离子取代后的PVA膜对异丙醇的溶解性能优于未经改性的纯PVA膜,且离子取代度的提高会使其溶解性能提高.The polyelectrolyte pervaporation membranes with different compositions were made from PVA modi- fied with several kinds of anions and cations. The swelling properties of the polyelectrolyte membranes immersed in isopropyl alcohol - water solution, and the influences of ionic substituents on membrane swelling properties were determined by GC at 60℃. The results show that the swelling ratios of polyelectrolyte membranes are larger than that of the pure PVA membrane, and the swelling capacity of of the polyelectrolyte membrane can be increased with the raise of ionic substituting degree.

关 键 词：渗透汽化 聚离子膜 聚乙烯醇(PVA) 溶胀 

分 类 号：TQ028.8[化学工程]