化工进展

• 材料科学与技术 • 上一篇    下一篇

聚乙烯醇膜的改性及应用研究进展

顾 瑾1,李俊俊1,孙余凭1,张 林2,陈欢林2   

  1. 1江南大学化学与材料工程学院,江苏 无锡 214122;2浙江大学化学工程与生物工程学系,浙江 杭州 310027
  • 出版日期:2013-05-05 发布日期:2013-05-05

Progresses in the modification and application of poly(vinyl alcohol) membrane

GU Jing1,LI Junjun1,SUN Yuping1,ZHANG Lin2,CHEN Huanlin2   

  1. 1 College of Chemical & Material Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China;2 Department of Chemical & Biological Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China
  • Online:2013-05-05 Published:2013-05-05

摘要: 聚乙烯醇(PVA)的改性处理是其应用于膜分离过程必不可少的环节。本文对PVA膜常用的交联、接枝、共混、杂化和取代等改性方法进行了综述,比较了这几种改性方法的优缺点,针对这些改性方法存在的问题,提出了一些改进思路。论文也详细介绍了PVA改性膜在渗透汽化、超滤、纳滤及燃料电池等方面的应用,最后分别对保持良好亲水性PVA膜在渗透汽化脱水领域和高导电率、低甲醇渗透率PVA膜在燃料电池中的应用前景作了展望。

关键词: 聚乙烯醇, 膜, 改性, 应用

Abstract: It is necessary to modify polyvinyl alcohol (PVA) before using it as separation membrane because of its excessive swelling. In this paper,modification methods of PVA are reviewed,including crosslinking,grafting,blending,hybridization and substitution;their advantages and disadvantages are listed;and some comments are given for problems in modification methods. The application of modified PVA membrane is presented in detail. The development and application of PVA pervaporation membrane with excellent hydrophilicity and PVA membrane with high conductivity and low methanol permeability for fuel cell are prospected,respectively.

Key words: poly(vinyl alcohol), membrane, modification, application

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