Composite polyamide membrane made via interfacial polymerization using a blend of non-polar solvents
申请人:Dow Global Technologies LLC
公开号:US10137418B2
公开(公告)日:2018-11-27
A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer, wherein the method includes: i) applying a polar solution comprising a polyfunctional amine monomer, and a non-polar solution comprising a polyfunctional acyl halide monomer to a surface of a porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the non-polar solution further comprises at least 50 vol % of a C5 to C20 aliphatic hydrocarbon and from 2 to 25 vol % of benzene or benzene substituted with one or more C1 to C6 alkyl groups; and ii) applying an aqueous solution of nitrous acid to the thin film polyamide layer.
一种制造复合聚酰胺膜的方法,包括多孔支架和聚酰胺薄膜层,其中该方法包括i) 将包含多官能团胺单体的极性溶液和包含多官能团酰卤单体的非极性溶液涂抹在多孔支撑体的表面,并使单体界面聚合以形成聚酰胺薄膜层,其中非极性溶液进一步包含至少 50 Vol % 的 C5 至 C20 脂肪族烃和 2 至 25 Vol % 的苯或被一个或多个 C1 至 C6 烷基取代的苯;ii) 将亚硝酸水溶液涂抹在聚酰胺薄膜层上。