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Preparation and properties on poly (phthalazinone ether sulfone) containing pendant sodium benzenesulfonate group nanofiltration membrane

Authors： FENG Huimei, WANG Danhui, XU Peiqi, XU Shugang, LI Chao, LYU Fei, WANG Xukun, ZHANG Shouhai, JIAN Xigao

Units： Dalian University of Technology, School of Chemical Engineering, Liaoning Province Technology Innovation Center of High Performance Resin Materials, Liaoning Key Laboratory of Polymer Science and Engineering, Dalian Key Laboratory of Membrane Materials and Membrane Processes,

KeyWords： poly (phthalazinone ether sulfone) containing pendant benzenesulfonic acid group; composite membrane; nanofiltration membrane

ClassificationCode：TQ326.55

year,volume(issue):pagination： 2024,44(5):12-19

Abstract：

Poly (phthalazinone ether sulfone) containing pendant sodium benzenesulfonate group (SPPESPNa) was prepared by immersing poly (phthalazinone ether sulfone) containing pendant benzenesulfonic acid group in sodium chloride solution; poly (phthalazinone ether sulfone) containing pendant benzenesulfonate group composite nanofiltration membranes were prepared by coating method. The effects of polymer concentration and heat treatment conditions on the performance of composite nanofiltration membranes were investigated. In this work, the water flux of SPPESPNa composite membrane was higher than that of SPPESPH composite membrane. When the mass fraction of SPPESPNa was 1.5%, the heat treatment temperature was 100 ℃, and the heat treatment time was 30 min, the flux reached 58.0 L/(m2·h), and the rejection was 89.0%. When the operating temperature was 95 ℃, the flux of the membrane was 205.0 L/(m2·h), and the rejection was 82.0%, which showed a better thermal resistance. The composite membrane was immersed in 0.2 g/L NaClO solution for 10 days, with no obvious change in performance and good chlorine resistance.

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AuthorIntro：

冯会美（1999-），女，河北衡水人，硕士，从事磺化聚芳醚砜复合纳滤膜的研究.*通讯作者，E-mail：zhangshh@dlut.edu.cn

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