应用化学 ›› 1997, Vol. 0 ›› Issue (5): 112-114.

• 研究论文 • 上一篇    下一篇

PVDF/PAN共混超滤膜

尹秀丽, 宋艳秋   

  1. 天津纺织工学院材料科学系, 天津 300160
  • 收稿日期:1996-11-20 修回日期:1997-05-07 出版日期:1997-10-10 发布日期:1997-10-10

Ultrafiltration Membrane from PVDF/PAN Blend

Yin Xiuli, Song Yanqiu   

  1. Department of Material Science, Tianjin Institute of Textile Science andTechnology, Tianjin 300160
  • Received:1996-11-20 Revised:1997-05-07 Published:1997-10-10 Online:1997-10-10

摘要: 共混是改变高分子材料性能的重要手段, 已发现用聚合物共混的方法能制得性能优异的共混聚合物分离膜[1~5]. 聚偏氟乙烯(PVDF)和聚丙烯腈(PAN)是两种各具特色的分离膜材料,PAN以其价廉、易制膜而受到重视, 但由于耐酸碱性较差, 使其应用受到限制. 而PVDF具有优异的耐腐蚀及耐酸碱性能. 本文研究了 PVDF/PAN 共混膜的特性, 制得了大通量的共混超滤膜。

关键词: 聚偏氟乙烯, 聚丙烯腈, 共混, 超滤膜

Abstract: The compatibility of polyvinylidene fluoride(PVDF)and polyacrylonitrile(PAN)has been investigated. The influence of the compatibility of the blend solution and casting technology on the membrane properties has been examined. The results showed that the PVDF/PAN ultrafiltration membrane made from homogeneous and clear casting solution of blend possessed fairly great flux and high retention ratio and the membrane morphologically consisted of uniform finger-like holes.

Key words: polyvinylidene fluoride, polyacrylonitrile, blend, ultrafiltration membrane