UN PROCEDIMIENTO PARA LA PREPARACION DE UNA MEMBRANA DE OS- MOSIS REVERSA

摘要

A process for forming a reverse osmosis membrane is disclosed. The process involves casting a solution of an aromatic polyamide and a modifying salt to form a layer which is dried and quenched with water to gel the aromatic polyamide, and annealed in water at 40 DEG -110 DEG C. and preferably 40 DEG to 90 DEG in a plurality of stages with the final stage being at more than 60 DEG C.