Sodium alginate and gelatin blending hybrid membrane was prepared using γ-glycidoxypropyl-trimethoxysilane(GLYMO) as crosslinking agent,and used for dehydration of acetic acid.Pervaporation results showed that permeation selectivity obtained the maximum when the GLYMO content was 3 wt%,however,the flux increased with the increase of GLYMO content;permeation selectivity increased,however,permeation flux decreased with the increase of acetic acid concentration.%通过硅烷偶联剂对海藻酸钠-明胶共混膜进行交联改性制备乙酸脱水渗透蒸发杂化膜。实验结果表明:随着偶联剂含量的增加,杂化膜的对水的选择性先增加后下降,在3 wt%时有最好的选择性,同时膜的渗透通量随着偶联剂含量增加而增大;膜的选择性随着进料乙酸浓度增大而增大,通量随着进料乙酸浓度增大而减少。
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