Abstract Performances of various hydrophilic and hydrophobic commercial membranes were evaluated in the pervaporative separation of binary organic-organic mixtures. The research was performed for the following binary mixtures: acetone-ethanol, ethanol-butanol, and acetone-butanol using chosen commercial membranes: DuraMem™150 (polyimide), Pervap 1060 (poly(dimethylsiloxane)) and Pervap 2216 (poly(vinyl alcohol)). For the assessment of membrane performance, in organic-organic pervaporation, transport and separation features (pervaporative separation index and separation factor) were taken into account. Regardless the membrane nature, the same component of the separated mixture was preferentially transported across the membrane. The assessment of membrane performance was additionally discussed by using Hansen's Solubility Parameters. The detailed physicochemical analyses focused on contact angle, spreading pressure and surface free energy with their components calculation were performed. The established physicochemical parameters were in a good accordance with the observed changes during pervaporative separation of organic-organic mixtures. Furthermore, an investigation of traces of water presence in feed of organic-organic mixtures on the membrane performance was discussed.

中文翻译：

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采用亲水性和疏水性商业聚合物膜的有机溶剂分离的渗透蒸发效率

摘要 评价了各种亲水性和疏水性商业膜在有机-有机二元混合物的渗透蒸发分离中的性能。对以下二元混合物进行了研究：丙酮-乙醇、乙醇-丁醇和丙酮-丁醇使用选定的商业膜：DuraMem™150（聚酰亚胺）、Pervap 1060（聚（二甲基硅氧烷））和 Pervap 2216（聚（乙烯醇） ))。对于膜性能的评估，考虑了有机-有机渗透蒸发、传输和分离特性（渗透蒸发分离指数和分离系数）。不管膜的性质如何，分离混合物的相同组分优先通过膜传输。通过使用 Hansen 的溶解度参数另外讨论了膜性能的评估。详细的物理化学分析侧重于接触角、铺展压力和表面自由能及其成分计算。建立的物理化学参数与有机-有机混合物渗透蒸发分离过程中观察到的变化非常一致。此外，还讨论了有机-有机混合物进料中存在的痕量水对膜性能的影响。