应用化学 ›› 1991, Vol. 0 ›› Issue (2): 24-27.

• 研究论文 • 上一篇    下一篇

用于渗透气化法分离水-乙醇混合物的含离子膜

张可达, 苏平   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1989-12-05 修回日期:1990-04-28 出版日期:1991-04-10 发布日期:1991-04-10
  • 基金资助:
    国家自然科学基金

ION CONTAINING MEMBRANE FOR SEPARATION OF WATER-ETHANOL MIXTURE BY PERVAPORATION

Zhang Keda, Su Ping   

  1. Changchun Institute of Applied Chemistry、Academia Sinica, Changchun 130022
  • Received:1989-12-05 Revised:1990-04-28 Published:1991-04-10 Online:1991-04-10

摘要: 合成了乙烯醇和顺丁烯二酸的交替共聚物,并制成膜,使其与BaCl2,CaCl2,SrCl2及CuSO4的水溶液反应。将反应产物—含离子聚合物膜用于渗透气化法分离乙醇-水混合物。结果表明,离子膜在渗透速率及分离系数两方面均好于纯聚合物膜。在以上四种离子膜中,含Ba2+离子膜的性能最好,这表明Ba2+离子不仅使膜更加亲水,增加了对水的溶解度,而且由于Ba2+离子引起聚合物分子链间的交联,而使膜变得更加致密,从而提高了膜的分离系数。

关键词: 渗透气化, 聚合物膜, 水-乙醇的分离

Abstract: An alternative copolymer of vinyl alcohol and maleic acid was synthesized and preparedinto membranes which,on reacting with aqueous solution of BaCl2,CaCl2,SrCl2 and CuSO4turned into polymer membranes containing metallic ions.In separation of water-ethanol mix-ture by pervaporation the ionic membranes showed better results than pure polymer membraneboth in flux and separation factor.The best one was the membrane containing Ba2+.

Key words: pervaporation, polymer membrane, separation of ethanol and water