High permeate flux reverse osmosis membrane including carbodiimide compound and method of manufacturing the same

摘要

The present invention relates to a reverse osmosis membrane including a porous support including a polysulfone layer; and a polyamide active layer formed on the porous support, wherein a concentration of sulfur (S) detected on a surface of the polyamide active layer is 1.8×10−3 units or less on average or a concentration of sulfur dioxide (SO2) detected on the surface of the polyamide active layer is 7×10−3 units or less on average, and a method of manufacturing a reverse osmosis membrane, the method including forming a porous support; and forming a polyamide active layer on the porous support by interfacially polymerizing a polyfunctional amine solution including a carbodiimide compound, and a polyfunctional acid halide compound solution.

主权项

1. A reverse osmosis membrane comprising:
a porous support including a polysulfone layer; and a polyamide active layer formed on the porous support, wherein a concentration of sulfur (S) detected on a surface of the polyamide active layer is 1.8×10−3 units or less on average or a concentration of sulfur dioxide (SO2) detected on the surface of the polyamide active layer is 7×10−3 units or less on average, wherein the polyamide active layer is formed by interfacially polymerizing a polyfunctional amine solution including a carbodiimide compound and a polyfunctional acid halide compound solution.