Mechanically Robust Ultrahigh Molecular Weight Supramolecular Hydrogels Reinforced by Synergistic Chain Entanglement, Hydrogen Bonding, and Nanoparticle Incorporation.

. Furthermore, the incorporation of PMAA-stabilized nanoparticles (spheres or worms) as secondary physical crosslinks significantly enhances energy dissipation and overall mechanical properties, resulting in a 2.5-fold increase in toughness relative to the neat UHMW PMAA hydrogel. This approach offers a versatile framework for designing high-performance soft materials through hierarchical molecular and nanoscale engineering.