Abstract A novel triamine 3,5-diamino-N-(4-aminophenyl) benzamide (DABA) monomer was synthesized and used to prepare thin-film composite (TFC) reverse osmosis (RO) membranes with m-phenylenediamine (MPD) and trimesoyl chloride (TMC). The membranes were characterized on both their top surfaces and cross-sections to determine their permeation properties, chemical composition, hydrophilicity, and membrane morphology. The results of the performance testing showed that the flux of membranes increased from 37.5 to 55.4 l/m2 h as the DABA concentration in amine solution was raised, while the rejection of membranes decreased slightly. Furthermore, the surface structure and chemical composition of the membranes were analyzed by X-ray photoelectronic spectroscopy (XPS), streaming potential measurement, attenuated total reflectance infrared (ATR-IR) spectroscopy, contact angle measurements, scanning electron microscopy (SEM) and atomic force microscopy (AFM) .The results revealed that, as the DABA content in amine solution increased, the membrane surface became more hydrophilic (giving rise to lower contact angles), smoother and thinner. It seemed that all the changes with regard to the membrane surface resulted from the introduction of the DABA into the amine solution.

中文翻译：

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由新型三胺 3,5-二氨基-N-(4-氨基苯基)-苯甲酰胺单体和间苯二胺制备的聚酰胺薄膜复合膜

摘要 合成了一种新型三胺 3,5-二氨基-N-(4-氨基苯基)苯甲酰胺 (DABA) 单体，并用于制备具有间苯二胺 (MPD) 和均苯三甲酰的薄膜复合 (TFC) 反渗透 (RO) 膜。氯化物 (TMC)。对膜的顶面和横截面进行表征，以确定它们的渗透特性、化学成分、亲水性和膜形态。性能测试结果表明，随着胺溶液中 DABA 浓度的增加，膜的通量从 37.5 升至 55.4 l/m2 h，而膜的截留率略有下降。此外，膜的表面结构和化学成分通过 X 射线光电子能谱（XPS）、流动电位测量、衰减全反射红外（ATR-IR）光谱、接触角测量、扫描电子显微镜（SEM）和原子力显微镜（AFM）。结果表明，随着胺溶液中DABA含量的增加，膜表面变得更加亲水（导致较低的接触角），更光滑和更薄。似乎所有关于膜表面的变化都是由于将 DABA 引入胺溶液中造成的。