中华医学超声杂志

应用化学 ›› 1992, Vol. 0 ›› Issue (5): 29-33.

• 研究论文 • 上一篇    下一篇

有机硅及其改性聚合物膜用于有机溶剂水溶液的渗透汽化分离

张可达, 刘南安   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1991-06-01 修回日期:1991-09-07 出版日期:1992-10-10 发布日期:1992-10-10
  • 基金资助:
    国家自然科学基金

PERVAPORATION OF DILUTE AQUEOUS SOLUTIONS OF ORGANIC COMPOUNDS THROUGH ORGANOSILICONE POLYMER MEMBRANES

Zhang Keda, Liu Nan'an   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1991-06-01 Revised:1991-09-07 Published:1992-10-10 Online:1992-10-10

PDF

423

被引次数

2

摘要： 采用室温固化硅橡胶及其它三种改性硅氧烷聚合物制成渗透汽化膜,分离丙酮(A),丁酮(B)、乙醇(E)及异丙醇(P)等有机物的水溶液。结果表明,随着透过温度提高、透量成指数关系增大,但对分离系数影响甚小。透量大小顺序为A>B>E>P,分离系数大小顺序为A>B>P>E,当膜材料中(CH3)2SiO链节含量由70%上升到100%时,有机物的透量及分离系数同时增加。

关键词: 渗透汽化, 膜, 硅橡胶, 丙酮, 乙醇, 丁酮, 异丙醇

Abstract: Pervaporation of dilute aqueous binary mixtures of four organic compounds (acetone A,butanone B,ethanol E and isopropanol P) through silicone rubber (PDMS) and its modifications was investigated. The experimental results showed that an increase in temperature increased the flux exponentially but it had little effect on the selectivity of membrane,Flux and selectivity has the order of A>B>E>P and A>B>P>E respectively.Both properties were increasingly improved when the(CH3)2SiO content in the membrane raised from 70% to 100%.

Key words: pervaporation, membrane, silicone rubber, acetone, ethanol, butanone, isopropanol

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