A Self-Lubricating Gradient Hydrogel Coating with Integrated Load-Bearing and Anti-Debonding Capabilities
A gradient double-network (GDN) hydrogel coating based on a polydopamine–gelatin–carboxymethyl cellulose (CMC)–tannic acid (TA) system synergistically breaks the inherent trade-off among load-bearing capacity, lubrication performance, and interfacial adhesion, providing a universal and facile strategy for the surface f...