By means ofin situintercalation polymerization Ti2CTx/EP nanocomposites were prepared, which possessed excellent mechanical and tribological properties.

Despite recent significant progress in fabricating tough hydrogels, it is still a challenge to realize high strength, large stretchability, high toughness, rapid recoverability, and good self‐healing simultaneously in a single hydrogel. Herein, Laponite reinforced self‐cross‐linking poly(N‐hydroxyethyl acrylamide) (PHEAA) hydrogels (i.e., PHEAA/Laponite nanocomposite [NC] gels) with dual physically cross‐linked network structures, where PHEAA chains can be self‐cross‐linked by themselves and also cross‐linked by Laponite nanoplatelets, demonstrate integrated high performances. At optimal conditions, PHEAA/Laponite NC gels exhibit high tensile strength of 1.31 MPa, ultrahigh tensile strain of 52.23 mm mm−1, high toughness of 2238 J m−2, rapid self‐recoverability (toughness recovery of 79% and stiffness recovery of 74% at room temperature for 2 min recovery without any external stimuli), and good self‐healing properties (strain healing efficiency of 42%). The work provides a promising and simple strategy for the fabrication of dual physically cross‐linked NC gels with integrated high performances, and helps to expand the fundamentals and applications of NC gels.

It is imperative to achieve excellent mechanical and electrical properties in a single hydrogel. Herein, based on hydrogen bonds and hydrophobic associations, poly(N-hydroxymethyl acrylamide) hydrophobic association hydrogels (PHMA HA gels) with dual physically cross-linked networks were prepared through micellar copolymerization of HMA and stearyl methacrylate (C 18 ) under the action of a surfactant and sodium chloride (NaCl). Under optimal conditions, PHMA HA gels could achieve excellent tensile strength (1.09 MPa) and high toughness (1509 J/m 2 ). Additionally, PHMA HA gels exhibited outstanding self-recovery and self-healing properties as well as high conductivity, and they could serve as sensors of strain and pressure to monitor human movements. It is believed that PHMA HA gels with integrated high performances have broad application prospects in wearable electronics.

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