Synthesis and characterization of high molecular weight perfluorocyclobutyl-containing polybenzimidazoles (PFCB–PBI) for high temperature polymer electrolyte membrane fuel cells

Synthesis and Characterization of Pyridi

Synthesis and Characterization of Pyridine-Based Polybenzimidazoles for High Temperature Polymer Electrolyte Membrane Fuel Cell Applications

✍ L. Xiao; H. Zhang; T. Jana; E. Scanlon; R. Chen; E.-W. Choe; L. S. Ramanathan; S 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 555 KB

## Abstract A series of polybenzimidazoles (PBIs) incorporating main chain pyridine groups were synthesized from the pyridine dicarboxylic acids (2,4‐, 2,5‐, 2,6‐ and 3,5‐) and 3,3′,4,4′‐tetraaminobiphenyl, using polyphosphoric acid (PPA) as both solvent and polycondensation reagent. A novel proces