▎ 摘　　要

NOVELTY - A polylactic acid composite material with shape memory performance comprises polylactic acid, polycaprolactone, modified graphene oxide and compatibilizer. USE - The polylactic acid composite material with shape memory performance is used in tissue engineering and medical and health applications such as artificial muscles, artificial joints and surgical sutures. ADVANTAGE - The method effectively improves the comprehensive properties of polylactic acid composite materials such as rigidity, toughness and shape memory while retaining the biodegradability and the product has good flexibility and high elongation at break. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the polylactic acid composite material with shape memory performance comprising mixing polylactic acid, polycaprolactone, modified graphene oxide and compatibilizer uniformly, melting and blending and extruding to obtain the polylactic acid composite material.