| 摘要 |
PROBLEM TO BE SOLVED: To solve, by targeting a collodion membrane pore-diameter-controlled by adding thereto salicylic acid at the time of the membrane formation and a functional polymer membrane wherein cobalt chloride, which is a micromolecule having a functionality, is trapped within the collodion membrane interior based on the application of this method, qualitative problems thereof as products due to browning following the irradiation thereof with ultraviolet rays.SOLUTION: In a case where p-hydroxybenzoic acid is added at the time of the formation of a collodion membrane, the browning of the membrane can be inhibited while the pore diameter reduction control function thereof is being preserved. Moreover, the browning of a functional polymer membrane wherein cobalt chloride is trapped within the collodion membrane interior, too, is inhibited based on the application of this method, and the color change function of the cobalt chloride can be preserved. Moreover, goals of enhancing the tensile strength of the membrane and of improving the elongation quality thereof can be realized based on the effects of the added p-hydroxybenzoic acid. |
