MEMBRANES CONTAINING POLY(VINYL METHYL ETHER) AND HYDROPHILISATION OF MEMBRANES USING POLY(VINYL METHYL ETHER)

摘要

The invention relates to polymeric ultrafiltration or microfiltrationmembranes of, for instance, Halar, PVDF or PP, incorporating PVME or vinylmethyl ether monomers. The PVME may be present as a coating on the membrane ordispersed throughout the membrane or both. The membranes are preferablyhydrophilic with a highly asymmetric structure with a reduced pore size and/orabsence of macrovoids as a result of the addition of PVME. The PVME maybecross-linked. The invention also relates to methods of hydrophilisingmembranes and/or preparing hydrophilic membranes via thermal or diffusioninduced phase separation processed.