Synthesis and characterization of composites with sulfonated styrene-divinylbenzene copolymer

In this work light sulfonation was applied to a styrene copolymer crosslinked with divinylbenzene (PS-co-DVB). Subsequently the product was incorporated at different concentrations into poly(vinylidene fluoride) (PVDF) and ethylene-propylene-diene (EPDM). Also, antimonic acid (HSb) was added. The resulting composites were characterized both microstructurally and electrically. In addition, PVDF/PS-co-DVBSH/HSb and EPDM/PS-co-DVBSH/HSb membranes were sulfonated, utilizing chlorosulfonic acid as a reagent, and characterized electrically. The membranes obtained by this procedure show good properties from an electric point of view.