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制备了一种PIB/PAN复合膜,对该膜在乙醇溶液体系中的性能做了一定的基础研究工作,并采用FTIR、SEM、AFM和接触角对膜进行表征。结果显示PIB均匀地涂覆在PAN支撑膜上,形成一层无孔的致密层;随着涂覆的PIB浓度的增加,膜表面的平均粗糙度呈现先增大后减少的趋势,复合膜的亲水性和亲油性都变差;复合膜对纯水没有通量,而对乙醇具有一定的渗透通量,在PIB质量分数为0.8%的时候,复合膜对乙醇水溶液具有最佳的分离特性。
A PIB / PAN composite membrane was prepared. The basic research work on the performance of the membrane in ethanol solution was carried out. The membrane was characterized by FTIR, SEM, AFM and contact angles. The results showed that PIB was uniformly coated on the PAN support film to form a non-porous dense layer. With the increase of the PIB concentration, the average roughness of the film surface first increased and then decreased. Hydrophilicity and lipophilicity were all worse. The composite membrane had no flux to pure water, but had certain permeation flux to ethanol. When PIB was 0.8%, the composite membrane had the best separation property to ethanol aqueous solution.