基于两性离子改性N-甲基二乙醇胺制备高性能复合纳滤膜  

Preparation of High Performance Composite Nanofiltration Membrane Based on Zwitterion Modified N-Methyldiethanolamine

作　　者：毕丽晓[1] 邵震 Bi Lixiao;Shao Zhen(School of Chemistry and Chemical Engineering,Qufu Normal University,Qufu 273165,China)

机构地区：[1]曲阜师范大学化学与化工学院,山东曲阜273165

出　　处：《山东化工》2023年第23期37-38,43,共3页Shandong Chemical Industry

基　　金：国家自然科学基金青年基金(21908130)。

摘　　要：污染物在膜或膜孔表面吸附、沉积,可以造成膜孔径堵塞,引起传质阻力增加,膜污染严重制约膜分离技术的应用发展。通过膜表面接枝两性离子可以有效抑制污染物在膜表面沉积、吸附。以两性离子改性的N-甲基二乙醇胺为水相单体,以均苯三甲酰氯为油相单体,通过界面聚合,成功制备了抗污染复合纳滤膜。制备的复合膜水通量高达146 L/(m^(2)·h·MPa),同时对Na_(2)SO_(4)截盐率保持在90%以上。The adsorption and deposition of pollutants on the surface of the membrane or the membrane pores can block the membrane pore,resulting in the increase of mass transfer resistance.Membrane pollution seriously restricts the application and development of membrane separation technology.The anti-fouling property of membrane can be effectively improved by grafting zwitterion on the membrane surface.In this paper,the membranes were successfully prepared via interfacial polymerization reaction.The water flux of the prepared membrane was up to 146 L/(m^(2)·h·MPa),while the salt rate remained above 90%.

关 键 词：纳滤膜 N-甲基二乙醇胺 两性离子 抗污染 

分 类 号：TQ35[化学工程] TQ028.8