COMPOSITE MATERIAL, METHOD OF MAKING IT AND ITS USE IN OSMOTIC PURIFICATION OF LIQUIDS

摘要

A composite material suitable for use as a reverse osmosis membrane comprises a microporous substrate having a preferably ultrathin, water permeable desalinization film supported thereon, said film comprising copolymer containing units of methacrylic acid and units of ester or amide of methacrylic acid containing a hydroxyl group on said amide or ester moiety, the copolymer being crosslinked by ester formation. …The composite material finds application in purifying concentrating liquids such as aqueous salinated solutions.