Gas-transport properties of sulfonated polystyrenes
β Scribed by Wen-Janq Chen; Charles R. Martin
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 739 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0376-7388
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π SIMILAR VOLUMES
Hydrogen, oxygen and carbon dioxide transport properties are studied at various hydration rates for a large series of sulfonated copolyimides synthesized with a naphthalenic dianhydride, a sulfonated diamine and various non-sulfonated diamines. For all copolymers, the gas permeability coefficient de
Gas transport of helium, hydrogen, carbon dioxide, oxygen, argon, nitrogen, and methane in three soluble poly(phenylene sulfone imide)s based on 2,2-bis(3,4decarboxyphenyl) hexafluoropropane dianhydride (6FDA) has been investigated. The effects of increasing length of well-defined oligo(phenylene su
Aromatic polyimides derived from 2,2'-bis(3,4-dicarboxyphenyl) hexafluoropropane dianhydride (GFDA) and 3 3 -or 4,4'-diaminodiphenylsulfone (m-DDS or p-DDS) have been synthesized with a chemical imidization. The disappearance of amic acid groups and the appearance of imide groups are determined by I