壳聚糖／聚丙烯酸钠聚离子复合膜的醇－水渗透汽化分离性能  

PERVAPORATION SEPARATION OF WATER-ALCOHOL THROUGH CHITOSAN/POLY(SODIUM ACRYLATE) COMPOSITE MEMBRANE

作　　者：卢灿辉[1] 许晨[1] 丁马太 

机构地区：[1]福建师范大学高分子研究所 [2]厦门大学化学化工学院

出　　处：《水处理技术》1996年第2期75-79,共5页Technology of Water Treatment

基　　金：国家自然科学基金

摘　　要：研究了壳聚糖－醋酸溶液与聚丙烯酸钠溶液形成的复合膜用于水－乙醇混合物的渗透汽化分离，在膜组成Ｃ＝０．８０时，分离系数出现最大值，对异丙醇－水体系的分离系数为∞。溶解－扩散过程对渗透汽化过程起着重大作用。由－ＮＨ＋３…ＯＯＣ－交联的聚离子复合膜对醇－水体系具有稳定的分离性能。In the present work the separation of water ethanol binary mixture through chitosan/poly (sodium acrylate) composite membranes was studied by pervaporation process. The membrane separation factor is maximum at membrane composition C =0.8 and ∞ for the dehydration of 70% aqueous i-propyl alcohol solution. The results indicated the dissolution-diffusion process existed a main effect on pervaporation. The polyionic composite membranes crosslinked by -NH + 3… -OOC- showed excellent and stable separation performance for water-alcohol mixtures.

关 键 词：壳聚糖 聚丙烯酸钠 聚离子复合膜 分离 渗透汽化 

分 类 号：TQ085.4[化学工程] TQ028.8