膜科学与技术

聚乙烯亚胺在界面聚合法制备纳滤膜中的应用

作者：郑力玮，王昊，李悦，郭世伟，苑春刚，罗建泉

单位： 1 华北电力大学环境科学与工程系，河北保定 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

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

出版年,卷(期):页码： 2023,43(3):158-166

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, post-treatment 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.

郑力玮（1997-），男，山东日照人，硕士研究生，研究方向为正电荷纳滤膜制备和应用，wave88531@163.com.

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