高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (9): 1267.

• 论文 • 上一篇    下一篇

高硅ZSM－5沸石填充硅橡胶膜的研究(Ⅲ)─对纯溶剂的吸附、脱附及渗透蒸发性质

陈新1, 平郑骅1, 丁雅娣1, 龙英才2   

  1. 1. 复旦大学高分子科学系, 上海, 200433;
    2. 复旦大学化学系, 上海, 200433
  • 收稿日期:1993-08-12 修回日期:1994-04-30 出版日期:1994-09-24 发布日期:1994-09-24
  • 通讯作者: 陈新,男,26岁,博士研究生.
  • 作者简介:陈新,男,26岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Studies on Silicious ZSM-5 Filled Silicone Rubber Membranes(Ⅲ)─Adsorption,Desorption and Pervaporation Properties on Pure Solvent

CHEN Xin1, PING Zheng-Hua1, DING Ya-Di1, LONG Ying-Cai2   

  1. 1. Dept.of Macromolecular Science, Fudan Univ., Shanghai, 200433;
    2. Dept.of Chem., Fudan Univ., Shanghai, 200433
  • Received:1993-08-12 Revised:1994-04-30 Online:1994-09-24 Published:1994-09-24

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摘要： 研究Silicalite-Ⅰ填充PDMS膜对乙醇和水的吸附、脱附和渗透蒸发性质以及吸附膜中丙酮在DSC测试中的行为。结果表明,沸石填充膜对乙醇的吸附量和渗透蒸发通量均明显高于水,且乙醇在沸石填充膜中达到吸附、脱附平衡的速度均快于水;且吸附在填充和不填充沸石的硅橡胶膜中丙酮的熔融温度有明显的提高,说明硅橡胶膜与有机溶剂有较强的相互作用。此外,沸石填充膜的结构在30wt%填充量附近有一改变,表明膜中硅橡胶的连续性遭到破坏。

关键词: 吸附, 脱附, 渗透蒸发, 纯溶剂, 相互作用

Abstract: The studies of adsorption, desorption and PVproperties on ethanol and water through silicalite-Ⅰfilled PDMSmembranes indicate that the adsorption capacity and PVflux on ethanol are distinctly larger than those on water, t he attainment of adsorption and desorption equilibrium on ethanol is quicker than that on water. DSCtest shows that m. p.of acetone which adsorbed on membranes whether filled or not filled with silicalite-Ⅰare raised up, which indicates that there is a strong interaction between organic solvent and PDMSmembrane.Moreover, as the zeolite content is about 30 wt%, there is a change that the continuity of silicone rubber matrix in zeolite filled membrane is destroyed.

Key words: Adsorption, Desorption, Pervaporation, Pure solvent, Interaction

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