Polyelectrolyte composite membranes of polybenzimidazole and crosslinked polybenzimidazole-polybenzoxazine electrospun nanofibers for proton exchange membrane fuel cells
Abstract
Polybenzoxazine (PBz)-modified polybenzimidazole (PBI) nanofibers have been prepared by an electrospinning process. The nanofibers have been crosslinked through the ring-opening addition reaction of the benzoxazine groups of PBz. The crosslinked PBI nanofibers show an enhancement in mechanical strength and an increase in resistance to