▎ 摘　　要

NOVELTY - Preparation of conductive hydrogel with multiple shape memory and high toughness involves mixing dialdehyde carboxymethyl cellulose as a cross-linking agent with a positively charged amino-rich polymer, mixing with polyvinyl alcohol (PVA), adding conductive substances, adding thermal initiator ammonium persulfate (APS) into the mixed solution, injecting into a glass mold, heating at 50℃ for 10 hours, freezing and thawing. USE - Preparation of conductive hydrogel with multiple shape memory and high toughness used for flexible sensors, human motion monitoring and handwriting recognition and bionics (all claimed). ADVANTAGE - The method provides conductive hydrogel with multiple shape memory, high toughness, high sensitivity, excellent self-repairing performance, reversible pH responsiveness, and temperature response, and no conflict between pH and metal ions, forms dynamic imine bond with amino-rich polymer. The MXene and graphene oxide as conductive filler can provide excellent conductive stability. The obtained hydrogel has improved mechanical property.