Structure Properties Relationship of a Novel Bulky Polysulfone as Proton Exchange Membrane for Fuel Cell Application
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1Department of polyurethane and advanced materials, faculty of science, Iran Polymer and Petrochemical institute
2Department of polyurethane and advanced materials, faculty of science. Iran Polymer and Petrochemical Institute
This study shows the research results on the synthesis, characterization, and structure-properties relationship of a sulfonated polysulfone based on a bulky aliphatic-aromatic diol. The electrophilic substitution reaction was used to synthesize the sulfonated monomer. The nucleophilic aromatic substitution together with a coupling step was used to prepare random polymers with 30, 40, and 50% degree of sulfonation. The prepared membranes of the polymers showed excellent film-ability. High thermal and mechanical stability of membranes ascribed to the presence of rigid aromatic sections. Temperature and relative humidity dependent impedance of membranes revealed high conductivity due to the structural benefit. In brief, the results confirmed the applicability of the membranes for application as fuel cell membranes.