Composition for polyamide interfacial polymerization, and method for manufacturing water treatment separation membrane by using same
Provided is a composition for interfacially polymerizing polyamide including an amine compound and a chain-type-structured additive containing one or more amino groups and two or more hydroxyl groups, and a method for manufacturing a water treatment separation membrane, and a water treatment separation membrane using the same.
1. An aqueous solution composition for interfacially polymerizing polyamide, comprising:
an amine compound in an amount from 0.001 wt % to 10 wt % based on 100 wt % of the composition;
a chain-type-structured additive containing one or more amino groups and two or more hydroxyl groups each separately bonded to a carbon atom in an amount from 0.01 wt % to 1 wt % based on 100 wt % of the composition;
a surfactant in an amount from 0.005 wt % to 0.5 wt % based on 100 wt % of the composition; and
water.
2. The composition of claim 1 , wherein the chain-type-structured additive is one of the following Chemical Formula 1 or 2:
wherein:
m and n1 to n3 are each an integer selected from 1 to 10; and
X1 to X3 are each independently a hydroxyl group or an alkyl group, and at least two of X1 to X3 are a hydroxyl group.
3. The composition of claim 2 , wherein X1 to X3 are each a hydroxyl group.
4. The composition of claim 1 , wherein the chain-type-structured additive is one or more types selected from among D-glucamine and tris(hydroxymethyl)aminomethane.
5. The composition of claim 1 , wherein the surfactant comprises one or more chemicals selected from among sodium lauryl sulphate (SLS), an alkyl ether sulphate, an alkyl sulphate, an olefin sulfonate, an alkyl ether carboxylate, a sulfosuccinate, an aromatic sulfonate, an octylphenol ethoxylate, an ethoxylated nonylphenol, an alkyl poly(ethylene oxide), a copolymer of poly(ethylene oxide) and poly(propylene oxide), an alkyl polyglucoside, cetyl alcohol, oleyl alcohol, cocamide MEA, cocamide DEA, alkyl hydroxyethyldimethyl-ammonium chloride, cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, hexadecyltrimethylammonium chloride, and an alkyl betaine.
6. A method for manufacturing a water-treatment membrane, the method comprising:
preparing a porous support; and
forming a polyamide active layer on the porous support by interfacially polymerizing the composition of claim 1 and an acyl halide compound.