The present invention discloses a preparation method of granular polyglycolic acid. The method comprises the steps of: pre-polymerizing molten glycolide with a reaction auxiliary in a static mixer to obtain a glycolic acid prepolymer; final-polymerizing the glycolic acid prepolymer obtained in the previous step with a chain extender through a viscosity-increasing device to obtain a molten product; and extruding and pelletizing the molten product obtained in the previous step, followed by cooling to obtain granular polyglycolic acid.
Area Code: CN
Application Number: CN202110693030.5
