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Effect of Gutter layer on Pore penetration phenomenon of Pebax / PAN composite

Authors： Du Guodong1，HU Yi1， Wang Lianjun1,2，JI Pengfei1，LI Shuguang1，LI Guangyong1，LI Yang2，

Units：（Dalian Eurofilm Industrial Ltd．，Dalian 116035，China; 2．Dalian University of Technology， Dalian 116024，China)

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ClassificationCode：TQ028.8

year,volume(issue):pagination： 2017,37(2):40-45

Abstract：

The dip coating method was adopted to prepare Pebax/PAN composite membrane, with polyacrylonitrile(PAN) ultrafiltration membrane as substrate and ethanol-water mixture as solvent for Pebax. It was found that Pebax/PAN composite membrane, which wasprepared by coating Pebax on PAN substrate directly, would lead to the permeation of coating solution. In this paper, the effect of penetration depth on the permeation rate of Pebax/PAN composite membrane was analyzed by the theory model, and the result showed that minutepenetration depth would have a great influence on the overall gas permeation rate of the Pebax/PAN composite membrane.Transition layer, which was prepared by blending amino siloxane and PDMS, was applied to address the above permeation, and the result proved that there was a significant increase of gas permeation of Pebax/PAN composite membrane and its CO2/N2 selectivity was basically stable.

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AuthorIntro：

作者简介：杜国栋（1967-），男，辽宁大连人，工程师，从事膜高分子气体分离膜研究工作．＊通讯作者，E-mail：ljwang@eurofilm.com.cn

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