HIGH MOLECULAR WEIGHT POLYLACTIC ACID SYNTHESIZED BY USING METHOD FOR SYNTHESIZING AND CATALYTICALLY-POLYCONDENSING BIONIC CREATININE GUANIDINIUM CHLORIDE

摘要

Disclosed is a high molecular weight polylactic acid synthesized by using a method for synthesizing and catalytically-polycondensing bionic creatinine guanidinium chloride. Creatinine is used as the material in a reaction with aqueous hydrochloric acid to synthesize a bionic creatinine guanidinium salt catalyst, creatinine guanidinium chloride (CR·Cl). The creatinine guanidinium chloride synthesized is used as a catalyst, an industrial grade lactic acid (LA, 85% to 90%, aqueous) is used as a monomer, a solvent-free second-degree polycondensation method is used for synthesis, and the biosafety high molecular weight polylactic acid that is metal-free and without toxic residue is acquired.