| abstract |
PROBLEM TO BE SOLVED: To provide an oriented ion exchange membrane stably exhibiting ion conductivity larger than that of a conventional perfluoro (alkyl) sulfonic acid membrane. SOLUTION: The lipophilic system I, the heterocyclic system II, the carboxylic acid system III, and the strong acid group system IV represented by the structural formula (1) Is a polymer compound in which the chemical bond main chain is cross-linked by the cross-linking agent V, the polymerization degree L = 1 to 450, the polymerization degree M = 1 to 550, the polymerization degree U = 1 to 650, and the polymerization degree W = 1 An ion exchange membrane using an ion exchanger having a degree of crosslinking of X = 1 to 200 and a degree of polymerization of Y = 1 to 200 and a degree of polymerization of Y = 5 to 50,000, and a fiber assembly or a porous membrane mainly made of an organic or inorganic compound. Embedded image |