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PREPARATION METHOD OF POLYAMIDE THIN FILM COMPOSITE REVERSE OSMOSIS MEMBRANE AND POLYAMIDE THIN FILM COMPOSITE REVERSE OSMOSIS MEMBRANE PREPARED THEREFROM
PREPARATION METHOD OF POLYAMIDE THIN FILM COMPOSITE REVERSE OSMOSIS MEMBRANE AND POLYAMIDE THIN FILM COMPOSITE REVERSE OSMOSIS MEMBRANE PREPARED THEREFROM
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机译:聚酰胺薄膜复合逆渗透膜的制备方法及制备的聚酰胺薄膜复合逆渗透膜的制备方法
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摘要
A preparation method of a polyamide thin film composite reverse osmosis membrane and a polyamide thin film composite reverse osmosis membrane prepared using the preparation method are provided. The preparation method of a polyamide thin film composite reverse osmosis membrane using interfacial polymerization of an amine aqueous solution and amine-reactive compound includes the steps of (a) forming an active layer through interfacial polymerization by contacting a surface of a porous support with an amine aqueous solution containing a polyfunctional aromatic amine monomer and an organic solution containing polyfunctional acyl halide monomer as an amine-reactive compound, and (b) performing post-treatment preceded by the forming of the active layer by contacting the active layer with an aqueous solution containing 0.1 to 100 wt % of polyfunctional tertiary alcohol amine. The polyamide thin film composite reverse osmosis membrane prepared by using the polyfunctional tertiary alcohol amine as a post-treatment compound has improved water permeability and salt rejection compared to a case of using various post-treatment agents or methods.
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