Highly Stretchable, Mechanically Strong, Tough, and Self-Recoverable Nanocomposite Hydrogels by Introducing Strong Ionic Coordination Interactions

In this study, the authors report a novel class of super tough nanocomposite hydrogels with physically dual‐crosslinking effects (DC hydrogels) through introducing strong ionic coordination interactions. Herein, graphene oxide (GO) nanosheets and iron (Fe 3+ ) ions act as physical cross‐linkers. GO nanosheets trigger the formation of the first cross‐linking points through hydrogen bonding with poly(acrylamide ‐co‐ acrylic acid) (p(AAm ‐co‐ AAc))...