| 摘要 |
PROBLEM TO BE SOLVED: To provide an ion exchange film for electrodialysis reversal power generation which has low film resistance, exhibits excellent mechanical strength and organic contamination resistance, and has excellent uniformity by preventing entrainment of bubbles in the film and eliminating variation in the film resistance.SOLUTION: An ion exchange film includes an ion exchanger (A) containing an ion exchangeable polymer having a cation-exchange group or an anion-exchange group, and impregnated in a porus support layer (B). The ion exchanger (A) is structured of a copolymer having a vinyl alcohol monomer (A-1) and an ion exchangeable monomer (A-2). The ion exchanger (A) contains nonionic antifoamer (C). A mole ratio of the vinyl alcohol monomer (A-1) and the ion exchangeable monomer (A-2) is in a range of 99:1 to 50:50. |
