PRODUCTION OF GRAFTED MEMBRANES

摘要

Process for producing a cation permselective membrane by irradiating a membrane comprising a fluorine-containing polymer having cation exchange groups, for example sulphonic, carboxylic acid or phosphonic acid groups, with high energy radiation and contacting the membrane with monomeric material comprising a fluorine-containing ethylenically unsaturated tertiary alcohol and graft copolymerising the monomeric material to the membrane to form a tertiary alcohol group-containing polymer chemically bonded to the membrane.