The effect of dodecylbenzenesulfonic acid molecules on poly(4,4-diphenylether-5,5-dibenzimidazole) films

The main aim of the present work was to approach the effect of the addition of an organic acid dopant, dodecylbenzenesulfonic acid (DBSA), in the preparation of poly(4,4-diphenylether-5,5-dibenzimidazole) (OPBI) films, commonly used as proton exchange membranes (PEMs). For this purpose, DBSA was blended with OPBI polymer matrix, at different concentrations, to evaluate the effect of such molecules in the proton conductivity of OPBI membranes. A...