文献类型：期刊文献

英文题名：Bis-tris-based polyester nanofiltration membranes fabricated via one-step interfacial polymerization for desalination

作者：Zheng, Yan[1];Jia, Rui[1];Xu, Zhen-Liang[1];Liang, Jing[1];Han, Rui[1];Dai, Jia-Yue[1];Yu, Lin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Membrane Sci & Engn R&D Lab, State Key Lab Chem Engn,Chem Engn Res Ctr,Sch Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2024

卷号：712

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20243416920417);WOS:【SCI-EXPANDED(收录号:WOS:001301136100001)】；

基金：The authors gratefully acknowledge the financial support received from the National Key R & D Program of China (2021YFB3801103and 2021YFB3801101) and the National Natural Science Foundation of China (22078092) .

语种：英文

外文关键词：Polyester membrane; Interfacial polymerization; Desalination; Bis-tris; Nanofiltration

摘要：To obtain high-performance polyester (PE) nanofiltration (NF) membranes for desalination, most PE NF membranes are fabricated with high aqueous monomer concentration, or high reaction temperature, or long reaction time. The interfacial polymerization (IP) reaction rate between hydroxyl groups and acyl chloride groups is promoted but the cost of membrane fabrication is also increased. In this work, Bis-tris (bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane) with rich hydroxyl groups is first utilized as an aqueous monomer to fabricate PE membranes under conventional IP conditions. The fabricated Bis-tris PE membranes feature strong hydrophilicity, excellent electronegativity, and ultra-thin selective layers, which are conducive to improving desalination performance. The optimized Bis-tris PE membrane shows excellent water permeance of 22.5 L m- 2 h- 1 bar- 1 and a satisfactory Na2SO4 2 SO 4 rejection of 96.9 %. Additionally, the Bis-tris PE membrane displays superior long-term stability and chlorine resistance under 96 h cross-flow filtration. This research enlightens the promising potential of Bis-tris as a novel and economic aqueous monomer for the fabrication of high-performance PE NF membranes.