| 摘要 |
PROBLEM TO BE SOLVED: To enhance the ion exchange capacity of an electrolyte membrane having hydrocarbon-based polymer resin as a base material.SOLUTION: An electrolyte membrane contains, as a base material, a graft polymer which contains an ion exchange group converted into a sodium type using weak alkaline reaction solution, and a hydrocarbon-based polymer resin. A method of manufacturing an electrolyte membrane contains an ion exchange group activating step of for immersing, in a weakly alkaline reaction solution, a base material formed by forming a film of graft polymer containing an ion exchange group to which a protective group is bonded and the hydrocarbon-based polymer resin, and replacing a protective group by sodium. It is preferable to use a weakly alkaline reaction solution containing a compound selected from the group consisting of an alkali metal hydroxide and an amine, and it is more preferably to select one from the group consisting of aqueous sodium hydrogen carbonate solution, aqueous sodium hydroxide solution and aqueous potassium hydroxide solution.SELECTED DRAWING: Figure 1 |
