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含苯磺酸侧基杂萘联苯聚醚砜纳滤膜的制备与性能

作者：冯会美，王丹慧，徐培琦，徐树刚，李潮，吕飞，王旭昆，张守海，蹇锡高

单位：大连理工大学化工学院，辽宁省高性能树脂材料专业技术创新中心，辽宁省高分子科学与工程重点实验室，大连市膜材料与膜过程重点实验室

关键词：含苯磺酸侧基杂萘联苯聚醚砜；复合膜；纳滤膜

DOI号： 10.16159/j.cnki.issn1007-8924.2024.05.002

分类号： TQ326.55

出版年,卷(期):页码： 2024,44(5):12-19

摘要：

将含苯磺酸侧基杂萘联苯聚醚砜（SPPESPH）浸泡于氯化钠溶液中得到含苯磺酸钠侧基杂萘联苯聚醚砜（SPPESPNa），采用涂覆法制备含苯磺酸侧基杂萘联苯聚醚砜复合纳滤膜，考察聚合物浓度、热处理条件对复合纳滤膜性能的影响.结果表明，SPPESPNa复合纳滤膜的通量高于SPPESPH复合纳滤膜的通量；当SPPESPNa的质量分数为1.5%，热处理温度为100 ℃，热处理时间为30 min时，复合膜的水通量达到58.0 L/(m2·h)，Na2SO4的脱盐率为89.0%；当操作温度为95 ℃时，复合膜的水通量为205.0 L/(m2·h)，对Na2SO4的脱盐率为82.0%，表现出良好的耐热性；将复合膜在质量浓度0.2 g/L的次氯酸钠溶液中浸泡10 d，性能无明显变化，表现出优异的耐氯性.

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.

基金项目：

作者简介：

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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