聚乙烯亚胺在界面聚合法制备纳滤膜中的应用  

Progress of the preparation of polyethylenimine based nanofiltration membranes through interfacial polymerization

作　　者：郑力玮 王昊[1] 李悦[1] 郭世伟[1] 苑春刚[1] 罗建泉 ZHENG Liwei;WANG Hao;LI Yue;GUO Shiwei;YUAN Chungang;LUO Jianquan(Department of Environmental Science&Engineering,North China Electric Power University,Baoding 071000,China;State Key Laboratory of Biochemical Engineering,Beijing 100190,China;Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]华北电力大学环境科学与工程系,保定071000 [2]生化工程国家重点实验室,北京100190 [3]中国科学院过程工程研究所,北京100190 [4]中国科学院大学,北京100190

出　　处：《膜科学与技术》2023年第3期158-166,共9页Membrane Science and Technology

基　　金：国家自然科学基金项目(22208091);河北省自然科学基金项目(B2022502009);中央高校基本科研业务项目(2022MS104)。

摘　　要：纳滤是一种介于超滤与反渗透之间的膜分离技术,具有操作压力低、无相变、分离效率高及运行成本低等优点.基于聚乙烯亚胺(PEI)和界面聚合方法制备的新型纳滤膜具有较强的正电荷(对阳离子更高的截留率)、较宽的孔径调节范围等优势,日益成为研究的热点.本文对近年来PEI在界面聚合法制备纳滤膜中的应用研究进行归纳,主要包括PEI作为水相单体、用于基膜改性、作为后处理剂等,讨论了目前该领域存在的问题,并对未来研究方向进行了展望,为推动PEI基纳滤膜的研究提供参考.Nanofiltration is a kind of membrane technology between ultrafiltration and reverse osmosis.It has the advantages of low operating pressure,no phase transition,high separation efficiency and low operating cost.Interfacial polymerization is the dominating method to prepare nanofiltration membranes.Compared with the polypiperazine-based nanofiltration membranes which are widely used at present,the novel polyethylenimine(PEI)based nanofiltration membranes prepared by interfacial polymerization have the advantages of strong positive charge(higher cation retention rate),good acid resistance and wide pore size adjustment range,which have increasingly become the research hotspot.In this paper,the progress of preparation of the nanofiltration membrane based on PEI and interfacial polymerization in recent years was reviewed,mainly including the PEI as aqueous monomer or additive,modifier for base membrane,posttreatment agent.Moreover,the existing problems in this field were discussed,and the future research directions were prospected,providing reference for the future research of PEI based nanofiltration membrane.

关 键 词：界面聚合 荷正电荷纳滤膜 疏松纳滤 镁锂分离 重金属脱除 

分 类 号：TQ050.4[化学工程]