Method for hydrophilizing porous membrane and method for manufacturing ion-exchange membrane using same
AssigneesW-Scope Korea Co., Ltd., W-Scope Chungju Plant Co., Ltd.
InventorsKyung Seok Yoon, Byung Hyun Kim, Won Sun Ryoo, Myung Su Jung, Bom Yi Lee
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Abstract
In one exemplary embodiment of the present invention, there are provided a method of hydrophilizing a porous membrane which includes treating a porous membrane with plasma in the presence of a mixed gas containing sulfur dioxide (SO2) and oxygen (O2), and a method of preparing an ion-exchange membrane using the same.
Claims14
A method of hydrophilizing a porous membrane, comprising treating a porous membrane with plasma in the presence of a mixed gas containing sulfur dioxide (SO2) at 60 to 80 vol % and oxygen (O2) at 20 to 40 vol %.
A porous membrane hydrophilized by a method of hydrophilizing a porous membrane, the method comprising treating a porous membrane with plasma in the presence of a mixed gas containing sulfur dioxide (SO2) at 60 to 80 vol % and oxygen (O2) at 20 to 40 vol %, and the porous membrane has a contact angle of 15° or less.
A method of preparing an ion-exchange membrane, comprising:
- (a) hydrophilizing a porous membrane by treating the porous membrane with plasma in the presence of a mixed gas containing sulfur dioxide (SO2) at 60 to 80 vol % and oxygen (O2) at 20 to 40 vol %;
- (b) preparing an electrolytic solution by dissolving a polymer electrolyte in a solvent;
- and
- (c) impregnating the porous membrane hydrophilized in the step (a) with the electrolytic solution.
Dependencies are inferred from the claim text.