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题名: Novel copolyimide membranes for gas separation
作者: Wang, Lina;  Cao, Yiming;  Zhou, Meiqing;  Zhou, Shaojun James;  Yuan, Quan
通讯作者: 曹义鸣
关键词: 6FDA copolyimide ;  permeability ;  gas separation
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2007-11-15
DOI: 10.1016/j.memsci.2007.08.024
卷: 305, 期:1-2, 页:338-346
收录类别: SCI
文章类型: Article
部门归属: 9
项目归属: 905
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
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.
关键词[WOS]: STRUCTURE PERMEABILITY RELATIONSHIPS ;  ASYMMETRIC HOLLOW-FIBER ;  TRANSPORT PROPERTIES ;  AROMATIC POLYIMIDES ;  PERMEATION PROPERTIES ;  CHEMICAL-STRUCTURE ;  PERMSELECTIVITY ;  SERIES ;  LAYER
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000250890600037
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98963
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
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.
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