膜科学与技术

聚苯并咪唑（PBI）渗透汽化膜的研究进展

作者：夏玲玲，王艳

单位：华中科技大学化学与化工学院武汉430074

关键词： PBI膜；渗透汽化分离；改性；膜形态

出版年,卷(期):页码： 2014,34(5):116-124

摘要：

聚苯并咪唑（PBI, polybenzimidazole）是一种高性能芳香族聚合物材料。由于具有突出的耐化学性、热稳定性和机械性能，以及良好的亲水性和可纺性， PBI成为一种很有前途的渗透汽化分离膜材料。本文综述了用于渗透汽化的PBI分离膜的研究进展，扼要介绍了PBI渗透汽化膜几种不同的形态，包括致密平板膜、单层中空纤维膜、双层中空纤维膜以及混合基质膜，并对不同形态的PBI膜进行了对比；同时也阐述分析了交联、表面改性、共混、填充等多种改性方法以及其对膜分离性能的影响。基于上述讨论，本文最后对PBI渗透汽化膜的发展方向和研究前景进行了总结。

As a high performance aromatic polymeric material, PBI owns outstanding chemical resistance, mechanical and thermal stability. The high hydrophilicity, rigid chemical structure and good spinnability make PBI a promising membrane material for pervaporation dehydration. Recently more and more PBI membranes have been reported for pervaporation applications, including the dehydration of ethylene glycol, acetone, acetic acid, and other organics, as well as some organic-organic separation. The recent research progress in PBI pervaporation membranes is summarized in this short review. PBI membranes of different morphologies (flat-sheet, single- and dual-layer hollow fiber, and mixed matrix membranes) are briefed and compared among themselves and with other polymeric membranes. Various modification methods, including crosslinking, surface modification, blending, and thermal treatment, are also discussed and their influences on the membrane performance are analyzed. Finally the future development and potential application of the PBI pervaporation membranes are summarized based on the above analysis. PBI membranes are shown to be an excellent candidate as pervaporation membranes, for both organic dehydration and organic-organic separation.

王艳（1975-），女，安徽巢湖人，博士生导师，青年千人，主要从事膜材料的开发研究，E-mail: wangyan@hust.edu.cn 夏玲玲（1990-），女，湖北省随州人，本科，研究助理，主要从事渗透汽化膜性能的研究，E-mail: xialingling1990@gmail.com

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