Semi-interpenetrating Network Membrane from Polyethyleneimine-Epoxy Resin and Polybenzimidazole for HT-PEM Fuel Cells

Figure 2

FT-IR spectra of PEI, ER, and PBI membranes, PEI-ER(1 : 2) membrane, and PEI-ER(1 : 2)/PBI semi-IPN membrane.