Polydopamine/Imogolite Nanotubes(PDA/INTs)Interlayer Modulated Thin Film Composite Forward Osmosis Membrane for Minimizing Internal Concentration Polarization

作     者：Jian-Chen Han Shao-Fei Wang Ran Deng Qing-Yun Wu Jian-Chen Han;Shao-Fei Wang;Ran Deng;Qing-Yun Wu

作者机构：School of Chemical Engineering and TechnologySun Yat-sen UniversityZhuhai 519082China Faculty of Materials Science and Chemical EngineeringNingbo UniversityNingbo 31521China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2022年第40卷第10期

页      面：1233-1241,I0010页

核心收录：

学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：financially supported by the Fundamental Research Funds for the Central Universities(No.2021qntd13) the Guangdong Basic and Applied Basic Research Foundation(No.2022A1515010021) 

主　　题：Interlayer Forward osmosis Internal concentration polarization Nanotube Thin film composite membrane 

摘      要：Forward osmosis(FO)as an energy-saving membrane process has attracted much attention in food concentration,water treatment,and *** film composite(TFC)membrane is the most popular FO membrane,but it suffers from the internal concentration polarization(ICP),which significantly limits the water flux and FO *** this report,we demonstrate a novel and high-performing thin film nanocomposite(TFN)membrane that employs a hydrophilic interlayer composed of imogolite nanotubes(INTs)and polydopamine(PDA).The INTs can be adhered to the porous substrate by the self-polymerization of PDA,and the as-prepared PDA/INTs interlayer displays a nanostructured network with outstanding *** detailed investigation was conducted to understand the relationship between the structure and property of the PDA/INTs interlayer and the morphology and performance of the TFN *** TFN membrane with the PDA/INTs interlayer performs a thinner and smoother polyamide selective ***,the TFN membrane shows a water flux of 18.38 L·m^(-2)·h^(-1),which is 2.18 times of the pristine TFC ***,the TFN membrane has a minimized structural parameter(577μm),almost a half of that of the pristine one(949μm).It reveals that the ICP effect of TFC membrane can be effectively alleviated by using a hydrophilic PDA/INTs *** TFN membrane with a satisfactory water permeability is promising in terms of future applications.