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对壳聚糖/聚丙烯腈复合膜分别用戊二醛、硫酸、硫酸镍溶液进行了交联改性。交联后,分离选择性(α)大为提高。对戊二醛交联膜进行了乙醇水溶液的分离性能研究,结果表明,50°C、料液中合水率小于45％时,α大于670,渗透通量为100～700g/m~2·h。
The chitosan / polyacrylonitrile composite membrane were respectively modified by glutaraldehyde, sulfuric acid and nickel sulfate solution. After crosslinking, separation selectivity (α) is greatly improved. The separation performance of glutaraldehyde crosslinked membrane was studied. The results showed that when the water-in-liquid ratio is less than 45% at 50 ° C, α is greater than 670 and the permeation flux is 100-700 g / m 2 h