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研究了含碱金属氯化物的聚乙烯醇。马来酸酐（ＰＶＡ－ＭＡ）交联膜对乙醇－水混合物的分高性能，盐含量低于６％质量时，膜的透量明显增加，原料液乙醇浓度较高时，分离系数也增大，含盐膜从５０％乙醇水溶液中吸附了５％～８％的自由水。
Alkali metal chloride-containing polyvinyl alcohol was studied. The crosslinked membrane of maleic anhydride (PVA-MA) has the highest performance for the ethanol-water mixture. When the salt content is less than 6%, the membrane permeability increases obviously and the separation factor increases when the ethanol concentration is high The salt-containing membrane adsorbed 5% to 8% free water from a 50% aqueous ethanol solution.