▎ 摘　　要

NOVELTY - A graphene/polylactic acid composite material comprises graphene oxide and polylactic acid. The graphene oxide is 0.1-5 wt.% of polylactic acid. USE - A graphene/polylactic acid composite material. ADVANTAGE - The composite material has a tensile strength of 79 MPa, elastic tensile modulus of 3100 MPa, an impact strength of gap of 12 KJ/m2, and hot deformation temperature of 95 degrees C. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparation of graphene/polylactic acid composite material comprising dispersing graphene oxide in water, adding polylactic acid solution under stirring condition, staying the uniformly stirred mixture solution for layering, obtaining the master batch by filtering, and mixing the master batch with polylactic acid.