▎ 摘　　要

NOVELTY - Preparing biodegradable compatibilizer comprises (i) adding the modified graphene oxide into the dispersing agent under the protection of nitrogen, and ultrasonically dispersing to obtain the modified graphene oxide dispersion liquid, (ii) dissolving telechelic polymer with the hydroxy terminated at both ends in a solvent under the protection of nitrogen, and stirring uniformly to obtain solution of telechelic polymer with hydroxy terminated at both ends, (iii) mixing the dispersion with solution of telechelic polymer with hydroxy terminated at both ends under the protection of nitrogen, reacting under the action of catalyst, freezing and drying, and purifying. USE - The compatibilizer is useful for preparing biodegradable aliphatic polyester/graphene oxide blend (claimed). ADVANTAGE - The compatibilizer improves phase separation phenomenon of the biodegradable aliphatic polyester containing graphene oxide blend. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for biodegradable compatibilizer prepared according to above mentioned method.