Interfacially polymerized, crosslinked membranes on microporous, organic solvent resistant ultrafiltration membrane backings are useful for the separation of organic mixtures under reverse osmosis conditions. The membranes are prepared by depositing an aqueous (or conversely non-aqueous) solution of a first component on the microporous backing, draining off the excess quantity of this first solution and then applying a second component in the form of a non-aqueous (or conversely aqueous) solution. The two components interact and polymerize at the interface between the aqueous phase and the non-aqueous phase to produce a highly crosslinked thin polymer layer on the microporous ultrafiltration support backing layer.
在微孔耐有机溶剂超滤膜衬底上的界面聚合交联膜可用于在反渗透条件下分离有机混合物。制备膜的方法是在微孔衬底上沉积第一种成分的
水溶液(或相反的非
水溶液),排出多余的第一种溶液,然后涂上非
水溶液(或相反的
水溶液)形式的第二种成分。这两种成分在
水相和非
水相之间的界面上相互作用并聚合,从而在微孔超滤支撑背层上形成高度交联的聚合物薄层。