| 摘要 |
To provide a simple method whereby an ionic polymer membrane having a high ion exchange capacity and a low water uptake can be produced by converting a -SO 2 F group in a polymer to a pendant group having multiple ion exchange groups, while preventing a cross-linking reaction. At the time of obtaining an ionic polymer membrane by converting -SO 2 F (group (1)) in a polymer sequentially to -SO 2 NZ 1 Z 2 (group (2)), -SO 2 N - (M ± + )SO 2 (CF 2 ) 2 SO 2 F (group (3)), -SO 2 N - (H + )SO 2 (CF 2 ) 2 SO 2 F (group (4)) and -SO 2 N - (M ² + )SO 2 (CF 2 ) 2 SO 3 - M ² + (group (5)), the polymer is formed into a polymer membrane in the state of any one of the groups (1) to (4), and the polymer membrane is thermally treated in the state of group (4). Here, Z 1 and Z 2 are hydrogen atoms, etc., M ± + is a monovalent cation, and Mp + is a hydrogen ion or a monovalent cation. |
