Abstract High-performance thin-film composite (TFC) membranes with a high water permeability and high salt rejection are requisites for the successful development of the forward osmosis technology. Based on our previous work on high-performance TFC membranes obtained by a novel ultrasound-assisted interfacial polymerization with different ultrasonication powers, this work conducts a comprehensive investigation of the effects of various ultrasonication parameters including ultrasonication power, frequency, and time on the membrane performance. The effects of the ultrasonication parameters on the chemical and surface properties, morphology, free volume, and the corresponding separation performance characteristics were investigated systematically. The modified TFC membrane obtained at the optimized ultrasonication conditions shows a water flux of 120.1 ± 2.1 LMH (2.6 times higher than that of the control membrane) and a reverse salt flux of 12.1 ± 0.7 gMH (34.2% reduction relative to that of the control membrane) in the pressure retarded osmosis mode with the draw solution of 2 M NaCl and the feed solution of deionized water.

中文翻译：

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超声处理参数对超声辅助界面聚合制备的薄膜复合聚酰胺膜正向渗透性能的影响

摘要 具有高透水性和高脱盐率的高性能薄膜复合（TFC）膜是正渗透技术成功开发的必要条件。基于我们之前对不同超声功率的新型超声辅助界面聚合获得的高性能 TFC 膜的工作，本工作对包括超声功率、频率和时间在内的各种超声参数对膜性能的影响进行了综合研究。 . 系统地研究了超声处理参数对化学和表面性质、形态、自由体积和相应分离性能特征的影响。在优化的超声处理条件下获得的改性 TFC 膜显示水通量为 120。