In this process, PLA is derived from lactic acid existing in two stereochemical con?gurations (i.e., L or D lactic acid), which is catalytically converted under low pressure into LL-lactide, meso or LDlactide, and DD-lactide, and then it is ring open poly

In this process, PLA is derived from lactic acid existing in two stereochemical con?gurations (i.e., L or D lactic acid), which is catalytically converted under low pressure into LL-lactide, meso or LDlactide, and DD-lactide, and then it is ring open polymerized into different structures of poly (Llactic acid, Dlactic acid, orLDlactic acid).