Structure and morphology of model polymer electrolyte membranes based on sulfonated syndiotactic-polystyrene in the δ co-crystalline phase resolved by small-angle neutron scattering

Syndiotactic polystyrene (s-PS) is able to form different kinds of co-crystalline phases with guest molecules of different size, shape and property. Several advanced materials have been produced starting from s-PS co-crystalline films. In particular, sulfonated s-PS (s-sPS) can be used as proton-conductive membrane in some fuel cells applications, as it presents high proton conductivity (comparable with Nafion). Besides, it shows a high chemical...