The role of graphene oxide in dramatically enhancing the mechanical and photoresponsive self-healing properties of poly(N, N-dimethylacrylamide) hybrid hydrogels

Preparation and properties of a photocrosslinked MCln-doped PDMA-g-PSMA hydrogel

“…Selecting hydrophobic associations with the finite lifetime and reversible fracture-crosslinking process to construct polymer networks has been demonstrated to improve the overall viscoelastic dissipation of materials, 30 resulting in artificial cartilage with high toughness and high self-healing efficiency. In our previous work, we have reported the self-healing and mechanical properties of PDMA-based 31 and PNIPAM-based 32 hydrophobically associating hydrogels. The hydrophobic monomer SMA was first solubilized in the aqueous phase by ADS–NaCl micellar solution, and then grafted in the hydrophilic polymer network by free radical polymerization.…”

“…Herein, based on our previous work, 31,32 UV-crosslinked hydrophobically associating PDMA-g-PSMA hydrogels were prepared using NaCl/MgCl 2 /CaCl 2 as doped inorganic salts, ADS as ionic micelles and Irgacure-2959 as the photoinitiator. The morphology, swelling behavior, mechanical property, selfhealing efficiency, hydrophilicity and hydrophobicity, friction, wear resistance and cytotoxicity of the hydrogels were investigated to explore how the physical and chemical properties of the PDMA-g-PSMA hydrogels were controlled by the doping components of inorganic salts by affecting the solubilization behavior of ionic micelles.…”