| 主权项 |
1. A method of making a composite membrane, comprising:
(i) applying a chemical mixture (A) to a support membrane to form a treated support membrane, wherein the chemical mixture (A) comprises an aqueous solution of a monomeric polyamine reactant represented by Formula 1:
R(NH2)z Formula 1 wherein R represents an organic group selected from aliphatic, alicyclic, aromatic, heterocyclic groups and combinations thereof, and z represents an integer of 2 or more; (ii) applying a chemical mixture (B) to the treated support membrane to form a first active layer on the support membrane, wherein the chemical mixture (B) comprises an organic solvent and a monomeric polyfunctional acyl halide reactant represented by Formula 2:
R1COX)p Formula 2 wherein R1 represents an organic group selected from the group containing aliphatic alicyclic, aromatic, heterocyclic groups and combinations thereof, X is selected from the group consisting of fluorine, chlorine, bromine and iodine, and p represents an integer of 2 or more; and (iii) applying a chemical mixture (C) to the first active layer, wherein the chemical mixture (C) comprises an aqueous base and a monomeric polyamine reactant having one or more hexafluoroalcohol groups represented by Formula 1A:wherein R0 represents an organic group selected from the group consisting of aliphatic, alicyclic, aromatic, heterocyclic groups and combinations thereof, m is an integer of 2 or more, and n is an integer of 1 or more. |
