Support surface pore structures matter: Effects of support surface pore structures on the TFC gas separation membrane performance over a wide pressure range

doi:10.1016/j.cjche.2018.12.009

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (8): 1807-1816.DOI: 10.1016/j.cjche.2018.12.009

• Separation Science and Engineering • Previous Articles Next Articles

Support surface pore structures matter: Effects of support surface pore structures on the TFC gas separation membrane performance over a wide pressure range

Mengqi Shi^1,2, Chenxi Dong³, Zhi Wang^1,2, Xinxia Tian^1,2, Song Zhao^1,2, Jixiao Wang^1,2

1 Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2 Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300350, China;
3 Research Institute of Shannxi Yanchang Petroleum(Group) Co. Ltd., Xi'an 710075, China

Received:2018-11-17 Revised:2018-12-13 Online:2019-11-16 Published:2019-08-28
Contact: Zhi Wang
Supported by:
Supported by the National Natural Science Foundation of China (21436009), the National High-tech Research and Development Program (2012AA03A611) and the Program of Introducing Talents of Discipline to Universities (B06006).

Support surface pore structures matter: Effects of support surface pore structures on the TFC gas separation membrane performance over a wide pressure range

Mengqi Shi^1,2, Chenxi Dong³, Zhi Wang^1,2, Xinxia Tian^1,2, Song Zhao^1,2, Jixiao Wang^1,2

1 Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2 Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300350, China;
3 Research Institute of Shannxi Yanchang Petroleum(Group) Co. Ltd., Xi'an 710075, China

通讯作者: Zhi Wang
基金资助:
Supported by the National Natural Science Foundation of China (21436009), the National High-tech Research and Development Program (2012AA03A611) and the Program of Introducing Talents of Discipline to Universities (B06006).

Abstract

Abstract: In this work, the effects of support surface pore structures (including surface pore size, surface pore density and surface porosity) on the performance of thin film composite (TFC) gas separation membrane over a wide pressure range (from 0.3 to 2.0 MPa) were studied. To fulfill it, the polysulfone (PSf) supports with different surface pore structures were prepared. Two kinds of wide-accepted polymeric membrane materials, i.e., polyvinylamine (PVAm) and Pebax 1657 copolymer, were used as skin layer materials. We pointed out for the first time that the support surface average pore size and pore density could affect the chain mobility of polymer of skin layer at the support surface pore entrance, then, can affect the TFC membrane performance. Besides, we also discussed the effects of support on the TFC membrane performance when the feed pressure changes for the first time. This work can provide guidance for choosing a suitable support for TFC gas separation membrane.

Key words: Support surface pore structures, Thin film composite gas separation, membrane, Polymer mobility

摘要： In this work, the effects of support surface pore structures (including surface pore size, surface pore density and surface porosity) on the performance of thin film composite (TFC) gas separation membrane over a wide pressure range (from 0.3 to 2.0 MPa) were studied. To fulfill it, the polysulfone (PSf) supports with different surface pore structures were prepared. Two kinds of wide-accepted polymeric membrane materials, i.e., polyvinylamine (PVAm) and Pebax 1657 copolymer, were used as skin layer materials. We pointed out for the first time that the support surface average pore size and pore density could affect the chain mobility of polymer of skin layer at the support surface pore entrance, then, can affect the TFC membrane performance. Besides, we also discussed the effects of support on the TFC membrane performance when the feed pressure changes for the first time. This work can provide guidance for choosing a suitable support for TFC gas separation membrane.

关键词: Support surface pore structures, Thin film composite gas separation, membrane, Polymer mobility

Mengqi Shi, Chenxi Dong, Zhi Wang, Xinxia Tian, Song Zhao, Jixiao Wang. Support surface pore structures matter: Effects of support surface pore structures on the TFC gas separation membrane performance over a wide pressure range[J]. Chinese Journal of Chemical Engineering, 2019, 27(8): 1807-1816.

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Support surface pore structures matter: Effects of support surface pore structures on the TFC gas separation membrane performance over a wide pressure range

Support surface pore structures matter: Effects of support surface pore structures on the TFC gas separation membrane performance over a wide pressure range

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