李井峰,许振良,杨虎

• 1:华东理工大学化学工程研究所
• 2:华东理工大学化学工程研究所
• 3:华东理工大学化学工程研究所 上海200237
• 4:上海200237

摘要(Abstract)：

以N,N-二甲基乙酰胺(DMAc)、N-甲基吡咯烷酮(NMP)和N,N-二甲基甲酰胺(DMF)为溶剂,乙醇(EtOH)、异丙醇(IPA)、正丁醇(BuOH)、一缩二乙二醇(DegOH)、聚乙二醇400(PEG400)为非溶剂添加剂,研究了溶剂/非溶剂体系对聚醚砜(PES)膜的结构和性能的影响。改变铸膜液体系中的非溶剂含量对膜的结构和性能有很大影响,但是这种影响不是以非溶剂的绝对含量来衡量的,而取决于非溶剂/溶剂的比值。改变溶剂的组成和配比也改变了溶剂/非溶剂体系,体系的溶度参数越接近PES的溶度参数,与PES的相容性越好,但是膜的通量较小。实验结果表明,采用NMP(或DMAc)与DMF以适当比例混合作溶剂,比采用单一NMP(或DMAc)作为溶剂制得的膜通量要大。通过改变溶剂配比,可实现对膜的表面开孔率、孔径、断面结构等参数的微控。

关键词(KeyWords)： 聚醚砜;微孔膜;非溶剂添加剂;溶度参数

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(973计划)资助(2003CB615705)

作者(Author): 李井峰,许振良,杨虎

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