Double-Network Physical Cross-Linking Strategy To Promote Bulk Mechanical and Surface Adhesive Properties of Hydrogels

Development of mechanically strong and adhesive hydrogels with self-recovery and self-healing properties is important for many applications but has proven to be very challenging. Here, we reported a double-network design strategy to synthesize a fully physically cross-linked double-network (DN) hydrogel, consisting of the first gelatin network and the second poly(N-hydroxyethyl acrylamide) network where both networks were mainly cross-linked by...