2003
DOI: 10.1016/s0376-7388(02)00602-6
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Gas separation properties of aromatic polyimides

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Cited by 109 publications
(43 citation statements)
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“…Over the past three decades, aromatic polyimides have been extensively investigated as potential membrane materials for natural gas separation [6,8,[12][13][14][15]. However, many polyimides have similar limitations in their practical use as cellulose acetate because of CO 2 -induced plasticization, which often results in unacceptable loss in CO 2 /CH 4 selectivity [16][17][18][19].…”
Section: Introductionmentioning
confidence: 99%
“…Over the past three decades, aromatic polyimides have been extensively investigated as potential membrane materials for natural gas separation [6,8,[12][13][14][15]. However, many polyimides have similar limitations in their practical use as cellulose acetate because of CO 2 -induced plasticization, which often results in unacceptable loss in CO 2 /CH 4 selectivity [16][17][18][19].…”
Section: Introductionmentioning
confidence: 99%
“…Among many polymeric materials, aromatic polyimides consisting of rigid chains and containing bulky and sterically-hindered structures are considered to have great potential as emerging membrane materials [5][6][7]. Extensive research to tailor polyimide chemical structures for better gas separation performance has been carried out in the last two decades [8][9][10][11]. However, structural design attempts to further improve performance have apparently approached a limit as indicated in the trade-off curve describing the relationship between gas permeability and selectivity [12,13].…”
Section: Introductionmentioning
confidence: 99%
“…Thus, it is to presume that there is still room to improve the permeation properties of APAs, for instance by means of convenient modification of their primary chemical structure, as it has been the case for other aromatic polymers, such as polyimides, which have undergone a great deal of chemical modifications looking for better permeation properties [22][23][24][25][26][27]. Moreover, the chemistry of APAs is related to that of polyimides, and their physical properties are comparable in many aspects.…”
Section: Introductionmentioning
confidence: 99%