天津工业大学学报2023，Vol.42Issue(6)：1-9,9.DOI:10.3969/j.issn.1671-024x.2023.06.001
pH敏聚苯硫醚膜的制备及其油水分离性能
Preparation of pH-responsive polyphenylene sulfide membrane and its performance of oil-water separation
摘要
Abstract
To achieve intelligent oil-water separation under extreme conditions,a smart pH-responsive membrane(PPS-CA/TiO2/SNPs)was prepared by the deposition-hot pressing method using polyphenylene sulfide(PPS)nonwo-ven fabric as the base membrane,n-octanoic acid(CA),butyl titanate(Ti(OBu)4),and nano-fumed silica(SNPs)as modifiers.The surface chemical structure composition,morphology and hydrophilicity were also char-acterized,the pH responsiveness,high temperature resistance and recycling performance were also tested.The results show that the PPS-CA/TiO2/SNPs fiber membrane has sensitive pH responsiveness and exhibits superhy-drophobicity and superoleophilicity in aqueous environment(pH=6.5),while in alkaline water environment(pH=12),the membrane surface changes to oleophobic and hydrophilic.The flux of p-chlorobenzene and dichloroethane during oil-water separation can reach more than 25 000 L/(m2·h),and the retention rate is above 95％.Even after 20 cycles of retention test,the separation efficiency of dichloroethane can still reach more than 95％.At the same time,tests under extreme conditions show the membrane to have good stability,which gives it the potential to be used in extreme environments.关键词
聚苯硫醚/pH敏膜/油水分离/极端条件Key words
polyphenylene sulfide/pH responsive membrane/oil-water separation/extreme conditions分类
轻工纺织引用本文复制引用
李振环,张正群,吴迪..pH敏聚苯硫醚膜的制备及其油水分离性能[J].天津工业大学学报,2023,42(6):1-9,9.基金项目
国家自然科学基金面上项目(21878231) （21878231）
国家自然科学基金青年基金(51603145) （51603145）
国家级大学生创新创业训练项目(202010058024) （202010058024）
