| abstract |
A high-quality hydrogen gas barrier film containing water-insoluble fibers is obtained. SOLUTION: At least one water-insoluble fiber selected from the group consisting of cellulose fiber, chitin fiber, chitosan fiber, and chemical modifications thereof, and an isothiazoline derivative represented by the general formula (1) (wherein R represents a hydrocarbon group having 1 to 8 carbon atoms, and X represents a hydrogen atom or a chlorine atom.) [Chemical 1] [Selected figure] None |