MOLECULAR-WEIGHT DEPENDENCE OF GAS-PERMEABILITY AND SELECTIVITY IN COPOLYIMIDES

被引:18
作者
EASTMOND, GC [1 ]
PAGE, PCB [1 ]
PAPROTNY, J [1 ]
RICHARDS, RE [1 ]
SHAUNAK, R [1 ]
机构
[1] BP INT PLC,SUNBURY RES CTR,SUNBURY TW16 7LN,MIDDX,ENGLAND
关键词
COPOLYIMIDE; MOLECULAR WEIGHT; GAS DIFFUSION; PERMEABILITY; SELECTIVITY;
D O I
10.1016/0032-3861(93)90571-Q
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The gas permeation behaviour of a number of polyimide copolymers. including a series of copolyimides of identical structure with different molecular weights, have been investigated. Permeabilities and selectivities were found to vary over a broad molecular weight range at high molecular weights. Differences in permeability with molecular weight can be comparable to differences due to marked changes in chemical structure.
引用
收藏
页码:667 / 670
页数:4
相关论文
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