✦ LIBER ✦

Pervaporation and gas separation membranes made from polyimide/polydimethylsiloxane block copolymer

✍ Scribed by Jan Schauer; Petr Sysel; Vladimír Marous̆ek; Zbynĕk Pientka; Jir̆í Pokorný; Miroslav Bleha

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 404 KB
Volume: 61
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19960822)61:8<1333::aid-app13>3.0.co;2-#

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✦ Synopsis

Polyimide/polydimethylsiloxane block copolymers were prepared from oligoimides based on 2-aminopyridine-terminated 3,3'-oxybis(phtha1ic anhydride) and 1,4-bis(4-amino-a,adimethylbenzyl)benzene, and 3-aminopropyl-terminated oligo(dimethylsi1oxane)s. Selectivity of homogeneous membranes prepared from the copolymers depends on the polydimethylsiloxane (PDMS) content: Selectivity of copolymers with up to approximately 20 wt % of PDMS is similar to that of polyimide homopolymer, whereas selectivity of copolymers containing more than 20 wt % of PDMS resembles that of pure PDMS. 0 1996

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