交联壳聚糖渗透蒸发膜的制备及其在偏二甲肼/水体系分离中的应用  

Preparation of Crosslinked Chitosan Pervaporation Membranes and Their Applications in Separation of Unsymmetrical Dimethylhydrazine/Water System

作　　者：曹佳玉[1] 张有智[1] 朱建伟[1] 王煊军[1] 

机构地区：[1]第二炮兵工程学院,陕西西安710025

出　　处：《化学推进剂与高分子材料》2011年第5期68-71,共4页Chemical Propellants & Polymeric Materials

摘　　要：采用壳聚糖为原料,聚酯无纺布为支撑层,用戊二醛交联制备了高选择性、高通量的交联壳聚糖渗透蒸发复合膜。考察了料液浓度、料液温度、膜厚等对偏二甲肼/水体系分离性能的影响。结果表明:在料液温度为10℃,膜厚度为25μm,进料液中偏二甲肼的质量分数为50%时,改性复合膜的分离因子最高达到5.25,渗透通量可达167 g/(m2.h)。The crosslinked chitosan pervaporation composite membranes with high selectivity and high flux were prepared by using chitosan as raw material, polyester non-woven fabrics as support layer and glutaraldehyde as crosslinker. The influence of feed solution concentration, feed solution temperature, membrane thickness, etc. on separation performance of unsymmetrical dimethylhydrazine/water system was investingated. The results show that the maximum separation factor of modified composite membrane reaches 5.25 and the permeation flux can reach 167 g/（m2. h） when the temperature of the feed solution is 10℃, membrane thickness is 25/xm, mass fraction of unsymmetrical dimethylhydrazine in the feed solution is 50%.

关 键 词：壳聚糖 渗透蒸发 膜分离 偏二甲肼/水 

分 类 号：TB383.2[一般工业技术—材料科学与工程]