高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (9): 1801.

• 研究论文 • 上一篇    下一篇

醋酸纤维素膜及其混合膜渗透气化性能的研究——稀溶液粘度斜率系数的依赖性

钱锦文1, 缪一民1, 王丽娜1, 张林2, 陈欢林2   

  1. 1. 浙江大学高分子科学与工程系;
    2. 浙江大学化学工程系, 杭州 310027
  • 收稿日期:2001-07-27 出版日期:2002-09-24 发布日期:2002-09-24
  • 通讯作者: 钱锦文(1946出生),男,教授,博士生导师,主要从事高分子结构与性能研究.E-mail:qianjw@ipsm.zju.edu.cn E-mail:qianjw@ipsm.zju.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:29836160)资助

Studies on Pervaporation Behavior of CA and Its Blend Membranes——Dependence of Permeation Flux on Viscosity Slope Coefficient

QIAN Jin-Wen1, MIAO Yi-Min1, WANG Li-Na1, ZHANG Lin2, CHEN Huan-Lin2   

  1. 1. Department of Polymer Science and Engineering;
    2. Department of Chemical Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2001-07-27 Online:2002-09-24 Published:2002-09-24

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摘要： 研究了醋酸纤维素(CA)、乙烯-醋酸乙烯共聚物(EVA)、聚乙烯醇缩丁醛(PVB)和聚醋酸乙烯酯(PVAc)4种高聚物在不同溶剂中的稀溶液粘性行为.同时,从各相应的溶剂中制备了CA均一膜,CA-PVB和CA-PVAc共混膜以及CA-EVA复合膜,并测定了各种膜对甲醇(MeOH)、甲基叔丁基醚(MTBE)混合物的渗透气化性能.结果表明,各种膜的渗透通量(J)与其稀溶液粘度斜率系数(b)成反比,即呈现随b值增大J值下降现象.

关键词: 高分子稀溶液, 粘度行为, 渗透气化, CA膜, 共混膜

Abstract: Viscosity behavior of cellulose acetate(CA) and its blends in different solvents has been studied. The pervaporation behavior of their membranes from the corresponding solvents has been measured for separating methanol/methyl ter-butyl ether(MeOH/MTBE) mixture. It was found that the permeation flux (J) of the membranes is reciprocal to the viscosity slope coefficient (b) in its dilute solutions.

Key words: Dilute-solution of polymer, Viscosity behavior, Pervapoartion, CA membrane, Blend membrane

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