| abstract |
A novel organic-inorganic composite hydrogel having not only high mechanical properties but also high water swellability and proton conductivity is provided. A homogeneous solution containing (meth) acrylamide or a derivative thereof, a sodium pyrophosphate-containing water-swellable clay mineral (B), and water (C) is prepared, and then a sulfonic acid group or a carboxylic acid group is contained. An organic polymer (A) obtained by copolymerizing (meth) acrylamide or a derivative thereof and a polymerizable monomer having a sulfonic acid group by adding a polymerizable monomer simultaneously with the polymerization initiator or after adding the polymerization initiator. ) And a water-swellable clay mineral (B), a method for producing an organic-inorganic composite hydrogel in which a three-dimensional network is formed. [Selection] Figure 1 |