文献类型：期刊文献

英文题名：Improvement of permeability and antifouling performance of PVDF membranes via dopamine-assisted deposition of zwitterionic copolymer

作者：Liu, Ziqiang Wu, Yunfeng Lan, Fengxia Xie, Gaoyi Zhang, Mengchen Ma, Chunping Jia, Jianbo

第一作者：Liu, Ziqiang

通信作者：Xie, GY[1];Jia, JB[1]|[144405fc8e0c6e3abb915]谢高艺;

机构：[1]Wuyi Univ, Sch Biotechnol & Hlth Sci, Jiangmen 529020, Peoples R China;[2]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China;[3]Wuyi Univ, Sch Text Mat & Engn, Jiangmen 529020, Peoples R China

第一机构：Wuyi Univ, Sch Biotechnol & Hlth Sci, Jiangmen 529020, Peoples R China

通信机构：corresponding author), Wuyi Univ, Sch Biotechnol & Hlth Sci, Jiangmen 529020, Peoples R China.|贵州理工学院化学工程学院

年份：2023

卷号：656

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20224613103618);Scopus(收录号：2-s2.0-85141604915);WOS:【SCI-EXPANDED(收录号:WOS:000890087800003)】；

基金：This research is supported by the National Natural Science Foundation of China (Nos. 51803039 and 21974097) , the Guizhou Province Science and Technology Planning Project (No. Qian Ke He Zhicheng (2019) 2845) , the Guangdong Province Rural Revitalization Strategy Special Fund (No. Jiangke [2021] 183) , the Education Department of Guangdong Province (Nos. 2020KSYS004 and 2020ZDZX2015) , the Science and Technology Bureau of Jiangmen (Nos. 2019030102360012639 and 2020030102730008711) and the Research Funding Project for Doctors and Professors of Wuyi University (Nos. BSQD2016 and JSQD2001) .

语种：英文

外文关键词：Zwitterionic copolymer; Dopamine; Co-deposition; Hydrophilicity; Antifouling

摘要：Hydration is critical to restricting surface fouling in membrane separation processes. In order to tightly coat hydrophobic membrane surfaces with zwitterions that afford excellent hydration ability, herein, a facile strategy combining copolymer design and dopamine-assisted co-deposition was described. Three copolymers containing dopamine methacrylamide (DMA) unit and 2-methacryloyloxyethyl phosphorylcholine (MPC) unit, with/without a third hydrophilic unit, were synthesized via free radical polymerization, and characterized by H-1 nuclear magnetic resonance (H-1 NMR) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy and gelpermeation chromatography (GPC). Subsequently, the as-synthesized copolymers were co-deposited with dopamine hydrochloride on polyvinylidene fluoride (PVDF) membrane surfaces. X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), atomic force microscopy (AFM) and water contact angle (WCA) measurements were conducted to analyze the superficial chemical composition, morphologies, roughness and hydrophilicity of the membranes. Systematical filtration and antifouling experimental investigations showed that the zwitterionic-copolymer-modified membranes demonstrated high permeate fluxes, good rejection performance, and great antifouling properties, attributing to the enhanced hydrophilicity of the membrane surfaces. Especially, the p(DM)/PDA-PVDF modified membrane exhibited outstanding water flux of 192.5 L center dot m(-2)center dot h(-1) and ideal BSA rejection of 96.1 % with excellent flux recover ratio (FRR1: 82.6 %, FRR3: 97.8 %). This work presents a feasible hydrophilic modification strategy of hydrophobic membranes, which is expected to provide a new avenue to overcome the permeability-selectivity trade-off limitations and fouling problems in membrane separation processes.