文献类型：期刊文献

英文题名：Thin-film composite forward osmosis membranes with a sulfonated polypropylene support for enhanced performance

作者：Zhao, Si-Jie[1];Zhang, Ming-Xiao[1];Xu, Zhen-Liang[1,2];Sun, Xin[1,3];Wang, Jiao[1]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Sch Chem Engn,Membrane Sci & Engn R&D Lab, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Elect Chem Innovat Inst, Shanghai 200237, Peoples R China;[3]Taicang Hushi Reagent Co Ltd, Taicang 215425, Jiangsu, Peoples R China

年份：2026

卷号：631

外文期刊名：DESALINATION

收录：;EI(收录号：20261820603314);WOS:【SCI-EXPANDED(收录号:WOS:001759672700001)】；

基金：The authors gratefully acknowledge the financial support from the National Key Research and Development Program of China (2021YFB3801103 and 2021YFB3801101) and the National Natural Science Foundation of China (22078092 and 22078088) .

语种：英文

外文关键词：Forward osmosis; Sulfonated polypropylene; Thin-film composite membrane; Internal concentration polarization; Fiber-reinforced support

摘要：Thin-film composite (TFC) membranes are pivotal for forward osmosis (FO). However, their performances are often constrained by the internal concentration polarization (ICP) of the substrate. While the fabric reinforcement has been used to enhance mechanical durability, cutting-edge fabric-reinforced TFC membranes still suffer from a high structural parameter (S), primarily due to the trade-off between structural integrity and ICP mitigation. Here, a novel sulfonated polypropylene (SPP) fiber membrane was introduced as a highly porous and hydrophilic support to address this challenge. The SPP substrate was coated with polysulfone (PSf) -sulfonated polysulfone (SPSf) blends through non-solvent induced phase separation (NIPS) method, subsequently form the selective layer via interfacial polymerization (IP) process. The composition of the support layer was systematically optimized. The composition of the support layer was systematically optimized, and the membranes were comprehensively characterized in terms of morphology, chemical structure and hydrophilicity. The optimal membrane, designated as TFC/SPP9-2, achieved high water flux of 36.6 LMH and a notably low specific salt flux JS/JW of 0.133 g/L in FO mode. Furthermore, this membrane demonstrated a remarkably low S of 214.6 mu m, which effectively suppressed ICP. This work presents a viable and potential strategy for fabricating high performance TFC-FO membranes by engineering the support layer, thereby creating a synergy between high permeability and robust mechanical stability for practical applications.