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首次制备了用Ｓｉ３Ｎ４，ＳｉＯ２，ＴｉＨ４超细粉末填充的改性壳聚精膜，并将其用于乙醇／水混合液的分离中。实验表明壳聚糖膜经超细粉末填充后强度增大，溶胀度减小。用于乙醇／水混合液渗透蒸发分离时，分离因子和渗透通量都有提高，并在填充量为１６．７％附近出现极大值。随着料液中乙醇含量的增大，渗透通量减小，分离因子增大；随着料液温度的升高渗透通量显著增大，分离因子则稍有下降。并简单讨论了超细粉末在乙醇／水混合液分离中的作用。
For the first time, a modified shelled fine film filled with Si3N4, SiO2 and TiH4 superfine powders was prepared and used for the separation of ethanol / water mixture. Experiments show that the chitosan film after ultrafine powder filled increased strength, swelling decreased. When used for the pervaporation separation of ethanol / water mixture, the separation factor and permeation flux increased, and the maximum appeared around 16.7%. With the increase of ethanol content in feed solution, the permeate flux decreased and the separation factor increased. The permeate flux increased significantly with the increase of feed solution temperature, but the separation factor decreased slightly. The role of ultrafine powders in the separation of ethanol / water mixtures was briefly discussed.