▎ 摘　　要

NOVELTY - A graphene oxide reinforced polylactic acid is prepared by washing graphite, drying, dissolving in deionized water, carrying out ultrasonic oscillation to peel off graphite oxide, drying, adding lactic acid, placing in oil bath, decompressing, distilling, mixing anhydrous lactic acid and graphene oxide at mass ratio of 20:1-320:1, raising temperature to 160-190 degrees C, adding catalyst, carrying out high-vacuum melt polycondensation at not greater than 100 Pa, cooling, dissolving in chloroform and washing. USE - Method for preparing graphene oxide reinforced polylactic acid (claimed). ADVANTAGE - The method has simple process and low cost.