Method for manufacturing water treatment separator, water treatment separator manufactured using same, and water treatment module comprising water treatment separator
The present specification provides a method for manufacturing a water-treatment separation membrane, the method comprising: preparing a porous support; forming a polyamide active layer on the porous support by using an interfacial polymerization of an aqueous solution comprising an amine compound and an organic solution comprising an acyl halide compound; and coating a coating solution comprising a random copolymer comprising the monomers represented by Chemical Formulae 1 to 3 onto the polyamide active layer, in which a content of the random copolymer is 0.5 wt % to 2 wt % based on a total weight of the coating solution, a water-treatment separation membrane manufactured by using the same, and a water treatment module comprising the water-treatment separation membrane.
1. A method for manufacturing a water-treatment separation membrane, the method comprising:
preparing a porous support;
forming a polyamide active layer on the porous support by using an interfacial polymerization of an aqueous solution comprising an amine compound and an organic solution comprising an acyl halide compound; and
coating a coating solution comprising a random copolymer comprising monomers represented by the following Chemical Formulae 1 to 3 onto the polyamide active layer,
wherein a content of the random copolymer is 0.5 wt % to 2 wt % based on a total weight of the coating solution:
in Chemical Formulae 1 to 3,
a content of the monomer of Chemical Formula 1 is 70 wt % to 90 wt % based on the entire random copolymer,
a content of the monomer of Chemical Formula 2 is 5 wt % to 25 wt % based on the entire random copolymer,
a content of the monomer of Chemical Formula 3 is 5 wt % to 25 wt % based on the entire random copolymer, and
R 1 to R 3 are the same as or different from each other, and are each independently hydrogen; or a substituted or unsubstituted alkyl group.
2. The method of claim 1 , wherein a solvent of the coating solution is a hydrophilic solvent.
3. The method of claim 1 , wherein R 1 to R 3 are the same as or different from each other, and are each independently hydrogen; or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms.
4. The method of claim 1 , wherein R 1 and R 2 are hydrogen.
5. A water-treatment separation membrane manufactured by the manufacturing method of claim 1 , the water-treatment separation membrane comprising:
a porous support;
a polyamide active layer disposed on the porous support; and
a coating layer comprising a random copolymer comprising a monomer of the following Chemical Formula 1, a monomer of the following Chemical Formula 2, and a monomer of the following Chemical Formula 3 on the polyamide active layer:
in Chemical Formulae 1 to 3,
a content of the monomer of Chemical Formula 1 is 70 wt % to 90 wt % based on the entire random copolymer,
a content of the monomer of Chemical Formula 2 is 5 wt % to 25 wt % based on the entire random copolymer,
a content of the monomer of Chemical Formula 3 is 5 wt % to 25 wt % based on the entire random copolymer, and
R 1 to R 3 are the same as or different from each other, and are each independently hydrogen; or a substituted or unsubstituted alkyl group.
6. The water-treatment separation membrane of claim 5 , wherein R 1 to R 3 are the same as or different from each other, and are each independently hydrogen; or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms.
7. The water-treatment separation membrane of claim 5 , wherein R 1 and R 2 are hydrogen.
8. A water treatment module comprising the water-treatment separation membranes of claim 5 .