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合成了聚乙烯醇－ｇ－聚丙烯酸接枝聚合物（ＰＶＡ－ｇ－ＰＡＡ），分别用ＫＯＨ、ＮａＯＨ、ＬｉＣｌ的乙醇－水溶液处理ＰＶＡ－ｇ－ＰＡＡ膜。发现离子膜用于乙醇－水的渗透气化分离可以大幅度提高分离系数，特别是用ＫＯＨ处理，分离系数可达４００。
Polyvinyl alcohol-g-polyacrylic acid graft polymer (PVA-g-PAA) was synthesized and the PVA-g-PAA films were treated with KOH, NaOH and LiCl respectively. It was found that the ion-exchange membrane used for ethanol-water permeation gasification separation can greatly improve the separation factor, especially with KOH, the separation factor can reach 400.