高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (6): 987.

• 研究简报 • 上一篇    下一篇

新型复合膜优先透醇性能的研究

王新平1, 封云芳1, 沈之荃2, 张一烽2   

  1. 1. 浙江丝绸工学院纤维工程分院, 杭州 310033;
    2. 浙江大学高分子系, 杭州 310027
  • 收稿日期:1998-05-24 出版日期:1999-06-24 发布日期:1999-06-24
  • 通讯作者: 王新平,男,32岁,博士,讲师.
  • 作者简介:王新平,男,32岁,博士,讲师.
  • 基金资助:

    浙江省自然科学基金

Studies on Alcohol Permselective Performanceof a Novel Composite Membrane

WANG Xin-Ping1, FENG Yun-Fang1, SHEN Zhi-Quan2, ZHANG Yi-Feng2   

  1. 1. College of Fiber Engineering, Zhejiang Institute of Silk Technology, Hangzhou, 310033;
    2. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027
  • Received:1998-05-24 Online:1999-06-24 Published:1999-06-24

PDF (PC)

被引次数

3

摘要： 有机物优先透过膜不仅可以用于有机物的浓缩和回收,还可以用于污水的净化等,因而有机物优先透过型渗透蒸发膜的研究倍受重视[1].但由于透醇型膜的研究起步较晚,以及膜材料选择和膜制备等诸多原因,致使透醇膜的研究进展缓慢.

关键词: 渗透蒸发, 新型复合膜, 优先透醇膜, 乙醇水溶液

Abstract: In this paper, preferential separation of ethanol from aqueous solution through a novel composite chitoan membrane has been investigated for the first time. This novel composite membrane has a threelayer structure. The top layer is a thin dense film of chitosan, and the support layer is microporous polyacrylonitrile(PAN). Between the dense and microporous membrane, there is an intermolecular crosslinking layer. The results show that the novel composite membrane preferentially permeate ethanol at lower ethanol concentration in feed when it has been prepared under proper conditions. The membrane gives a separation factor of 6.8 and a flux of 900gm-2h-1at 5%(mass fraction) of ethanoL IN the feed at 20℃ .

Key words: Pervaporation, Novel composite membrane, Membrane for preferential separation of alcohol, Water-ethanol mixture

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