Membrane Science and Technology

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Preparation of poly(amide-12-b-ethylene oxide)/glycerol triacetate composite membranes and their gas separation performance

Authors： Ying Wang 1,2, Jizhong Ren1 *, Changyang Xu3, Hui Li1, Shichao Feng1, Maicun Deng1

Units： 1. National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China

KeyWords： poly(amide-12-b-ethylene oxide);glycerol triacetate; CO2 separation

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2014, 34(5):27-32

Abstract：

This paper describes the performance of Pebax1074/glycerol triacetate (GTA) blend composite membranes for CO2 separation. First the influence of mass content of Pebax1074 and GTA on the performance of composite membranes is investigated. The gas permeance decreases as the content of Pebax1074 increases for Psf/PDMS/Pebax1074 composite membranes. And for Psf/PDMS/Pebax1074-GTA composite membranes, when the GTA content exceeds 50wt%, the gas permeance increases greatly, but the gas selectivity is not high. In order to increase the membrane selectivity, the PDMS sealing layer is used and different operating conditions are observed. The Psf/PDMS/Pebax1074-GTA/PDMS composite membrane has high flux and selectivity for CO2 separation. Due to plasticization effect, the CO2 permeance increases with the increase of transmembrane pressure. The permeance of different gases increases as temperature increases, and the selectivities of CO2/(N2、CH4、H2) decrease.

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AuthorIntro：

王颖(1990-),女,河南灵宝人,硕士,从事膜分离过程研究.?通讯联系人,renjizhong@dicp.ac.cn

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