Method for production of solution-diffusion membranes and their application for pervaporation

摘要

For producing solution/diffusion membranes, homogeneous dense films prepared by melt extrusion or casting from synthetic polymers, having a melting temperature above 140 C., a glass transition temperature above 0 C. and long time stability against boiling ethanol are irradiated with accelerated electrons and submitted to a subsequent radical graft copolymerization. After graft polymerzation, the functional groups are converted into the dissociated salts.