▎ 摘　　要

NOVELTY - Preparation of shape memory hydrogel involves preparing 8 %mass polyvinyl alcohol aqueous solution, adding reduced graphene oxide/hyaluronic acid composite powder, ultrasonically stirring for 0.5 hours, leaving still overnight to defoam, dripping dilute nitric acid, adjusting pH to 3.5, leaving still at 30 degrees C for 24 hours, dripping glutaraldehyde for crosslinking, stirring, leaving still at room temperature to form gel, adding aqueous ammonia on top of gel for mineralization, recrystallizing hyaluronic acid, and washing gel repeatedly with deionized water until it is neutral. USE - Preparation of shape memory hydrogel. ADVANTAGE - The method provides hydrogel with uniform structure, excellent thermal stability, tensile strength increased by 3 times, elongation at break increased by 7 times, excellent shape memory performance under heat-induced stimulation conditions of solvent.