Gas permeability and permselectivity of photochemically crosslinked copolyimides

	Gas permeability and permselectivity of photochemically crosslinked copolyimides
	Liu Y ; Pan CY ; Ding MX ; Xu JP
刊名	journal of applied polymer science
	1999
卷号	73 期号:4 页码:521-526
关键词	POLYIMIDE MEMBRANES SEPARATION POLYMERS
ISSN号	0021-8995
通讯作者	liu y
中文摘要	a series of copolyimides were prepared from 2,4,6-trimethyl-1,3-phenylenediamines (3mpda), 3,3',4,4'-benzophenone tetracarboxyl dianhydride (btda), and pyromellitic dianhydride (pmda). modification of the copolyimides by ultraviolet irradiation were carried out. gas permeabilities of h-2, o-2, and n-2 through the copolyimides and photochemically crosslinked copolyimides were measured at temperatures from 30 to 90 degrees c. the relationships between gas permeabilities and temperature are in agreement with the arrhenius equation. the structure of photochemically crosslinked copolyimides were characterized by fourier transform infrared and gel measurement methods. linear relationships between both log p and e-p and the volume fraction of pmda-3mpda exist. photochemically crosslinking modification result in a decrease in gas permeability and an increase in e-p and alpha(h-2/n-2) for all the copolyimides. for h-2/n-2 separation, photochemically crosslinked copolyimides are of higher gas permeabilities and permselectivities simultaneously than normal polyimides. (c) 1999 john wiley & sons, inc.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000080364200008
公开日期	2010-11-04
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/21869]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Liu Y,Pan CY,Ding MX,et al. Gas permeability and permselectivity of photochemically crosslinked copolyimides[J]. journal of applied polymer science,1999,73(4):521-526.
APA	Liu Y,Pan CY,Ding MX,&Xu JP.(1999).Gas permeability and permselectivity of photochemically crosslinked copolyimides.journal of applied polymer science,73(4),521-526.
MLA	Liu Y,et al."Gas permeability and permselectivity of photochemically crosslinked copolyimides".journal of applied polymer science 73.4(1999):521-526.