fig1

Figure 1. Optical photographs of (A) the electrolyte before and after polymerization and (B) the p(DAH-co-Am-DAH) electrolyte membrane [all photographs in (A) and (B) are taken by the authors]; (C) SEM image of the p(DAH-co-Am-DAH) electrolyte membrane; (D) FTIR spectra of the electrolyte before and after polymerization; (E) Thermogravimetric analysis and (F) Tensile testing of p(DAH-co-Am-DAH) and p(DAH) without glass-fiber support. DAH: Bis[2-(acryloyloxy)ethyl] heptanedioate; Am-DAH: bis[2-(acrylamido)ethyl] heptanedioate; SEM: scanning electron microscopy; FTIR: Fourier transform infrared.