| abstract |
According to the present invention, there is provided a composition for CO2 gas separation membrane, which comprises a cross-linked polymer and a non-cross-linked polymer, the cross-linked polymer will be selected from the group consisting of alkali metal carbonate, alkali metal carbonate It is obtained by cross-linking at least one compound of hydrogen salt and alkali metal hydroxide with a polymer having a carboxyl group, and the non-cross-linked polymer will be selected from vinyl acetate, acrylic acid, methacrylic acid and their derivatives It is obtained by polymerizing more than one monomer. |