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Removal of residual carboxylic acid groups from cellulosic membranes and sephadex

✍ Scribed by Chen, Hao-Chia; Craig, Lyman C.; Stoner, Elizabeth

Book ID
127104076
Publisher
American Chemical Society
Year
1972
Tongue
English
Weight
773 KB
Volume
11
Category
Article
ISSN
0006-2960

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Carbon molecular sieve (CMS) membranes were prepared by pyrolysis of polyimides containing carboxylic acid groups, in order to investigate their permeation properties for He, CO 2 , O 2 and N 2 . The polyimides were synthesized with a varying number of carboxylic acid groups in the diamine. Wide-ang