摘要
聚乙烯醇作为一种性能优异的亲水性制膜材料,广泛应用于超滤、纳滤和反渗透膜,但是其易溶胀,化学稳定性不高,在碱性条件易降解,制约了聚乙烯醇在膜领域的应用。随着人们对聚乙烯醇改性的研究,开发出了多种改性方式,极大促进了聚乙烯醇在膜领域的发展。本文对近年来出现的各种聚乙烯醇膜改性原理和方法进行了综述。
As a hydrophilic membrane material with excellent performance,polyvinyl alcohol is widely used in ultrafiltration,nanofiltration and reverse osmosis membranes.However,it is easy to swell,has low chemical stability,and is easy to degrade in alkaline conditions,which restricts the application of polyvinyl alcohol in membrane field.With the research on the modification of polyvinyl alcohol,a variety of modification methods have been developed,which greatly promoted the development of polyvinyl alcohol in the field of membrane.In this paper,the principles and methods of PVA membrane modification in recent years were reviewed.
作者
杨康
陈英波
Yang Kang;Chen Yingbo(State Key Laboratory of Separation Membranes and Membranes Processes,School of Material Science and Engineering,Tiangong University,Tianjin 300387,China)
出处
《山东化工》
CAS
2021年第19期104-105,108,共3页
Shandong Chemical Industry
关键词
分离膜
聚乙烯醇
膜改性
separation membrane
polyvinyl alcohol
membrane modification
