Promoting the separation efficiency of pervaporation membranes is a must to meet the growing demands of society. In this study, acetone-assisted interfacial polymerization was employed to produce thin-film composite (TFC) pervaporation membranes with improved performance. Two monomers were considered—diethylenetriamine (DETA) and trimesoyl chloride (TMC); they reacted with each other to form a thin polyamide layer, which was deposited on a hydrolyzed polyacrylonitrile (HPAN) substrate. Aqueous solutions containing different concentrations of acetone were used to dissolve DETA. Introducing acetone as a cosolvent of water enhanced the sorption of DETA in the HPAN support. It also altered and improved the physicochemical properties of the TFC membranes. An optimum concentration of 50 wt% aqueous acetone solution was established. Through acetone-assisted interfacial polymerization, a TFC membrane was then fabricated, and it exhibited a high separation efficiency: permeation flux = 1641 ± 134 g∙m⁻² h⁻¹ and water concentration in the permeate = 98%–99% (feed =70 wt% aqueous isopropanol solution). Moreover, the modified TFC membrane displayed a high separation performance at a wide range of operating conditions.

为了满足社会不断增长的需求，必须提高渗透膜的分离效率。在这项研究中，丙酮辅助界面聚合被用来生产具有改进性能的薄膜复合材料（TFC）渗透汽化膜。考虑了两种单体-二亚乙基三胺（DETA）和均苯三甲酰氯（TMC）；它们彼此反应形成薄聚酰胺层，该聚酰胺层沉积在水解聚丙烯腈（HPAN）基材上。含有不同浓度丙酮的水溶液用于溶解DETA。引入丙酮作为水的助溶剂可增强DETA在HPAN载体中的吸附。它还改变并改善了TFC膜的物理化学性质。确定最佳浓度为50 wt％的丙酮水溶液。^－2 h ^－1，透过水中的水浓度= 98％–99％（进料= 70 wt％异丙醇水溶液）。而且，改性的TFC膜在宽范围的操作条件下显示出高分离性能。