Poly(amide-6-b-ethylene oxide)/[Bmim][Tf2N] blend membranes for carbon dioxide separation

doi:10.1016/j.jechem.2015.10.009

	Poly(amide-6-b-ethylene oxide)/[Bmim][Tf2N] blend membranes for carbon dioxide separation
	Qiu, Yongtao 1,2; Ren, Jizhong 1; Zhao, Dan 1,2; Li, Hui 1; Deng, Maicun 1
刊名	JOURNAL OF ENERGY CHEMISTRY
	2016
卷号	25 期号:1 页码:122-130
关键词	Poly(Amide-6-b-ethylene Oxide) Ionic Liquid Carbon Dioxide Separation Blend Membrane
ISSN号	2095-4956
DOI	10.1016/j.jechem.2015.10.009
文献子类	Article
英文摘要	Poly(amide-6-b-ethylene oxide) (Pebax1657)/1-butyl-3-methylimidazo-lium bis[trifluoromethyl)sulfonyl]-imide ([Bmim][Tf2N]) blend membranes with different [Bmim][Tf2N] contents were prepared via solution casting and solvent evaporation method. The permeation properties of the blend membranes for CO2, N-2, CH4 and H-2 were studied, and the physical properties were characterized by differential scanning calorimeter (DSC) and X-ray diffraction (XRD). Results showed that [Bmim][Tf2N] was dispersed as amorphous phase in the blend membranes, which caused the decrease of T-g (PE) and crystallinity (PA). With the addition of [Bmim][Tf2N], the CO2 permeability increased and reached up to approximately 286 Barrer at 40 wt% [Bmim][Tf2N], which was nearly double that of pristine Pebax1657 membrane. The increase of CO2 permeability may be attributed to high intrinsic permeability of [Bmim][Tf2N], the increase of fractional free of volume (FFV) and plasticization effect. However, the CO2 permeability reduced firstly when the [Bmim][Tf2N] content was below 10 wt%, which may be due to that the small ions of [Bmim][Tf2N] in the gap of polymer chain inhibited the flexibility of polymer chain; the interaction between Pebax1657 and [Bmim][Tf2N] decreased the content of EO units available for CO2 transport and led to a more compact structure. For Pebax1657/[Bmim][Tf2N] blend membranes, the permeabilities of N-2, H-2 and CH4 decreased with the increase of feed pressure due to the hydrostatic pressure effect, while CO2 permeability increased with the increase of feed pressure for that the CO2-induced plasticization effect was stronger than hydrostatic pressure effect. (C) 2015 Science Press and Dalian Institute of Chemical Physics. All rights reserved.
WOS关键词	TEMPERATURE IONIC LIQUIDS ; GAS SEPARATION ; GEL MEMBRANES ; TRANSPORT-PROPERTIES ; COMPOSITE MEMBRANES ; SOLUBILITY PARAMETERS ; INTERNAL ENERGIES ; COHESIVE ENERGY ; POLYMER BLENDS ; PERFORMANCE
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000373244400016
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170666]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Ren, Jizhong
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Yongtao,Ren, Jizhong,Zhao, Dan,et al. Poly(amide-6-b-ethylene oxide)/[Bmim][Tf2N] blend membranes for carbon dioxide separation[J]. JOURNAL OF ENERGY CHEMISTRY,2016,25(1):122-130.
APA	Qiu, Yongtao,Ren, Jizhong,Zhao, Dan,Li, Hui,&Deng, Maicun.(2016).Poly(amide-6-b-ethylene oxide)/[Bmim][Tf2N] blend membranes for carbon dioxide separation.JOURNAL OF ENERGY CHEMISTRY,25(1),122-130.
MLA	Qiu, Yongtao,et al."Poly(amide-6-b-ethylene oxide)/[Bmim][Tf2N] blend membranes for carbon dioxide separation".JOURNAL OF ENERGY CHEMISTRY 25.1(2016):122-130.