Novel copolyimide membranes for gas separation

	Novel copolyimide membranes for gas separation
	Wang, Lina ; Cao, Yiming ; Zhou, Meiqing ; Zhou, Shaojun James ; Yuan, Quan
刊名	journal of membrane science
	2007-11-15
卷号	305 期号:1-2 页码:338-346
关键词	6FDA copolyimide permeability gas separation
ISSN号	0376-7388
通讯作者	曹义鸣
产权排序	1;1
英文摘要	a series novel fluorinated copolyimides were synthesized with various diamine compositions by chemical imidization in a two-pot procedure. the gas permeation behavior of 2,2'-bis(3,4'-dicarboxyphenyl)hexafluoropropane dianhydride (6fda)-2,4,6-trimethyl-1,3-phenylenediamine (tmpda)/2,6-diamino toluene (dat) polyimides was investigated. the physical properties of the copolyimides were characterized by ir, dsc and tga. all the copolyimides were soluble in most of the common solvents. the gas permeabilities and diffusion coefficients decreased with increasing dat content; however, the permselectivity of gas pairs such as h-2/n-2, o-2/n-2, co2/ch4 and co2/n-2 was enhanced with the incorporation of dat moiety. the permeability coefficients of h-2, o-2, n-2, co2 and ch4 were found to decrease with the increasing order of kinetic diameters of the penetrants gases. moreover, all of the copolyimides studied in this work exhibited performance near, lying on or above the existing upper bound trade-off line between permselectivity and permeability. (c) 2007 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; technology ; physical sciences
类目[WOS]	engineering, chemical ; polymer science
研究领域[WOS]	engineering ; polymer science
关键词[WOS]	structure permeability relationships ; asymmetric hollow-fiber ; transport properties ; aromatic polyimides ; permeation properties ; chemical-structure ; permselectivity ; series ; layer
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000250890600037
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/98963]
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
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Chinese Acad Sci, China Grad Univ, Beijing 100049, Peoples R China 3.Honeywell Int, Des Plaines, IL 60017 USA
推荐引用方式 GB/T 7714	Wang, Lina,Cao, Yiming,Zhou, Meiqing,et al. Novel copolyimide membranes for gas separation[J]. journal of membrane science,2007,305(1-2):338-346.
APA	Wang, Lina,Cao, Yiming,Zhou, Meiqing,Zhou, Shaojun James,&Yuan, Quan.(2007).Novel copolyimide membranes for gas separation.journal of membrane science,305(1-2),338-346.
MLA	Wang, Lina,et al."Novel copolyimide membranes for gas separation".journal of membrane science 305.1-2(2007):338-346.