文献类型：期刊文献

英文题名：Fabrication of novel FO membrane supported on PU-PAN electrospun nanofiber membrane for high-permeability and selectivity

作者：Pandaya, Dibakar[1];Yue, Yu-Qian[1];Xu, Zhen-Liang[1];Zhang, Ming-Xiao[1];Jia, Rui[1];Hedar, Mateen[1];Irfan, Muhammad[1];Cheng, Liang[1];Tang, Yong-Jian[1];Joshi, Mahesh Kumar[2]

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, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Tribhuvan Univ, Cent Dept Chem, Kathmandu, Nepal

年份：2026

卷号：14

期号：2

外文期刊名：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

收录：;EI(收录号：20260920178513);WOS:【SCI-EXPANDED(收录号:WOS:001707361100001)】；

基金：The authors sincerely acknowledge the financial support received from the State Key R&D Program of China (2021YFB3801103 and 2021YFB3801101) and the National Natural Science Foundation of China (22078092, 21176067 and 22208101) .

语种：英文

外文关键词：Desalination; Electrospun nanofiber; Polyacrylonitrile (PAN), Polyurethane (PU

摘要：Electrospun nanofiber membranes are promising supports for forward osmosis (FO) due to their high porosity and low transport resistance. However, their large interconnected pores often hinder the formation of a defect-free selective polyamide layer. In this work, a polyurethane-polyacrylonitrile (PU-PAN) blended electrospun nanofiber substrate is introduced. Substrate hydrophilicity and morphology are precisely regulated through controlled polymer solution composition and blending ratio, while thermal pressing enhances mechanical integrity and reduces surface roughness. The optimized PUPAN-10 substrate exhibits a finely interconnected nanofiber network with high porosity, tuned hydrophilicity, improved mechanical properties, and a smoother surface. These features enable controlled interfacial polymerization between m-phenylenediamine and trimesoyl chloride, leading to the formation of a thin, uniform polyamide (PA) selective layer. The resulting thin-film composite (PUPAN-10-TFC) FO membrane showed high water flux (J(w)) with low reverse salt flux (J(s)) in both FO and PRO modes compared to the control membrane, using deionized (DI) water as feed solution (FS) and 2 M NaCl as draw solution (DS). The membrane further demonstrated long-term stability and anti-fouling properties. This work presents a substrate-centered design strategy in which molecular-level blending of PU and PAN, followed by thermal compaction, creates an electrospun support with tuned hydrophilicity and pore structure. This enables the controlled formation of a thin, uniform PA layer, achieving an improved permeability-selectivity balance in FO membranes.