Thermal Measurements on Poly[2,2'-(m-phenylene)-5,5'-bibenzimidazole] Fibers
✍ Scribed by J. D. Menczel
- Book ID
- 110287577
- Publisher
- Springer Netherlands
- Year
- 2000
- Tongue
- English
- Weight
- 68 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0022-5215
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Copolymers of poly(2,5‐benzimidazole) (ABPBI) and poly[2,2′‐(__p__‐phenylene)‐5,5′‐bibenzimidazole] (__p__PBI) were synthesized for use as fuel cell membranes to take advantage of the properties of both constituents. The composition of the copolymers were controlled by changing the feed
To prepare organo-soluble poly[(2,2,Ј-m-phenylene)-5,5Ј-bibenzimidazole] (PBI) with high yield, a homogeneous nitration of PBI was attempted. Nitro-substituted PBI (NO 2 -PBI) was synthesized through the homogeneous reaction of the PBI powder with nitric acid in sulfuric acid. The degree of substitu
## Abstract Poly(2,2′‐imidazole‐5,5′‐bibenzimidazole) (PBI‐imi) was synthesized via the polycondensation between 3,3′,4,4′‐tetraaminobiphenyl and 4,5‐imidazole‐dicarboxylic acid. Effects of the reaction conditions on the intrinsic viscosity of the synthesized polymers were studied. The results show