Thin-film composite pervaporation membranes with selective layer from pyromellitic dianhydride - 4,4’ oxydianiline polyimide on porous poly(amide-imide) support (Romakon^TM-PM) for treatment of water/ethanol mixtures with exceeding water content (>50 wt% water) are characterised by the use of scanning electron microscopy, atomic force microscopy and X-ray diffraction. Membranes showed high values of flux, separation factor and PSI (up to 774) in the selected feed mixture composition range. The influence of the support and structural features of the polyimide in the coating layer on the transport properties is discussed. The membranes are successfully tested in terms of pervaporation dehydration of beer. The influence of the permeate temperature on the separation process performance is discussed.

具有均苯四酸二酐-多孔聚（酰胺-酰亚胺）载体（Romakon ^TM -PM）上的4,4'环氧二苯胺聚酰亚胺的选择性层的薄膜复合全蒸发膜，用于处理水含量超过50％（重量）的水/乙醇混合物水）的特征在于使用扫描电子显微镜，原子力显微镜和X射线衍射。在所选的进料混合物组成范围内，膜显示出较高的通量，分离系数和PSI（最高774）值。讨论了涂层中聚酰亚胺的载体和结构特征对传输性能的影响。膜已成功通过啤酒的全蒸发脱水测试。讨论了渗透温度对分离工艺性能的影响。