▎ 摘　　要

NOVELTY - A biodegradble polyester composite comprises a matrix resin and nanomaterial dispersed in the matrix resin, where the matrix resin comprises a solid dispersion of anhydrosugar alcohol in which the nanomaterial is dispersed and a diol containing anhydrosugar alcohol-alkylene glycol. The polyester resin is a polymerization reaction product of a component and dicarboxylic component, and the solid dispersion of anhydrosugar alcohol is obtained by introducing the nanomaterial into an anhydrosugar alcohol in an aqueous dispersion state. USE - A biodegradble polyester composite used for molded article (claimed). ADVANTAGE - The biodegradable polyester composite is directly in the form of solid crystal or powder without dispersing nanomaterials in water, exhibits improved mechanical properties (e.g., tensile strength, tensile modulus, and elongation), and nanomaterials are uniformly dispersed in the composite to have uniform physical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for producing a biodegradable polyester composite which involves polymerizing a diol component and a dicarboxyl component including a solid dispersion of anhydrosugar alcohol and anhydrosugar alcohol-alkylene glycol in which the nanomaterial is dispersed, where the solid dispersion of anhydrosugar alcohol sieve is obtained by introducing a nanomaterial in an aqueous dispersion state into anhydrosugar alcohol.