Chemical and thermal characterization of novel sulfonated poly(ether sulfone)s membrane based on bulky diol

Novel poly(ether sulfone)s were prepared using direct copolymerization of disulfonateddifluorodiphenyl sulfone as sulfonated dihalide and difluorodiphenyl sulfone as a nonsulfonated dihalide monomer with bulky phenol red as diol. Copolymers with degrees of sulfonation (20%) were synthesized via polycondensation in order to evaluate their potential for fuel cell application. 1H-NMR and FT-IR was used for characterization of prepared copolymers. Differential scanning calorimetry and thermogravimetric analysis were applied for investigation and comparison of the thermal properties of copolymers.

Keywords:

Poly(ether sulfone) , Phenol red , Thermal properties , Chemical characterization , Membrane