| 新型复合膜优先透醇性能的研究 |
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| 引用本文： | 王新平,封云芳,沈之荃,张一烽.新型复合膜优先透醇性能的研究[J].高等学校化学学报,1999,20(6):987-989. |
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| 作者姓名： | 王新平 封云芳 沈之荃 张一烽 |
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| 作者单位： | 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 |
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| 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.
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| 关 键 词： | 渗透蒸发 新型复合膜 优先透醇膜 乙醇水溶液 |
| 收稿时间： | 1998-05-24 |
Studies on Alcohol Permselective Performance of a Novel Composite Membrane |
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| WANG Xin-Ping,FENG Yun-Fang,SHEN Zhi-Quan,ZHANG Yi-Feng.Studies on Alcohol Permselective Performance of a Novel Composite Membrane[J].Chemical Research In Chinese Universities,1999,20(6):987-989. |
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| Authors: | WANG Xin-Ping FENG Yun-Fang SHEN Zhi-Quan ZHANG Yi-Feng |
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| Institution: | 1. College of Fiber Engineering, Zhejiang Institute of Silk Technology, Hangzhou, 310033;
2. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027 |
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| 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 900 gm-2h-1 at 5%(mass fraction) of ethanol in the feed at 20 . |
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| Keywords: | Pervaporation Novel composite membrane Membrane for preferential separation of alcohol Water-ethanol mixture |
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