【摘要】 研究了壳聚糖（ＣＳ）的制膜方法，试制出对高浓度乙醇水溶液的分离具有较好渗透汽化性能的硫酸交联透水膜，该膜对８０ｗｔ％乙醇水溶液的分离具有最高的ＰＳＩ值（α×Ｊ）。实验还表明膜的分离系数（α）值随乙醇浓度的下降而下降；制成复合膜后膜的稳定性能可大大提高更多还原

【Abstract】 The pervaporation chitosan membrane which was crosslinked by sulfuric acid was prepared for separation ethanol-water solution. The value of PSI( α×J ) showed the highest for the 80wt% feed ethanol aqueous. Also the separation factor for ethanol decreased with the decrease of the ethanol feed concentration. The results also showed that when the composite membrane was prepared the stability of the membrane used in the low ethanol feed concentration could be improved.更多还原