MEMBRANE REPARATION AND PORE SIZE REDUCTION USING INTERFACIAL OZONE ASSISTED CHEMICAL VAPOR DEPOSITION

摘要

The instant invention is directed toward a process for enhancing the permselective properties, selectively sealing defects and pinholes, controllably altering the pore size and stabilizing the permselective properties of articles having apertures therein comprising the steps of: simultaneously contacting an article (H) having a first and second surface (K, L), said first and second surfaces being capable of passing ozone and metal compounds therethrough and said first and second surfaces being oriented such that said metal compounds and ozone can react across said first and second surfaces, with ozone on said first surface and a metal compound on said second surface and wherein said contacting is conducted for a time and at a temperature and pressure sufficient to allow said ozone and said metal compound to form a metal oxide.