▎ 摘　　要

NOVELTY - An enhanced composite material comprises 80-90 wt.% poly-L-lactic acid, 9.5-19.9 wt.% barium titanate and 0.1-0.5 wt.% graphene oxide. USE - Enhanced composite material. ADVANTAGE - The enhanced composite material has excellent synergistic effect, tensile strength of 25-40 MPa, compressive strength of 30-50 MPa, piezoelectric constant of 0.5-1 pC/N, mechanical property, electrical conductivity, dielectric constant and biological activity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of enhanced composite material, which involves weighing poly-L-lactic acid, barium titanate and graphene oxide, adding barium titanate and graphene oxide powder to ethanol solution, stirring, ultrasonically processing to obtain mixed suspension of barium titanate and graphene oxide, adding poly-L-lactic acid powder to ethanol solution, stirring, ultrasonically processing to obtain poly-L-lactic acid suspension, adding poly-L-lactic acid suspension to the mixed suspension of barium titanate and graphene oxide, stirring to obtain composite powder, ultrasonically processing, separating, drying and performing selective laser sintering process to obtain composite bone scaffold.