Chemistry

Some physical data for the three isomeric polylactides


Tab. 1
Some physical data for the three isomeric polylactides
PLACAS no.SolidMelting pointGlass transition temperature
PDLA1)106989-11-1partially crystalline154 ° C- (67 ° C)
PLLA2)26811-96-1partially crystalline80-190 ° C38-65 ° C
PDLLA3)26100-51-1amorphous135-176 ° C (130-230 ° C)38-66 ° C

The data comes from the CAS database REGISTRY.

The data from additional sources are given in brackets.

High polymer PDLA and PLLA have a melting point of about 170 ° C; a 1: 1 blend of PDLA and PLLA forms a stereo complex and melts at 230 ° C.

1) PDLA: Poly-D-Lactic Acid2) PLLA: Poly-L-Lactic Acid3) PDLLA: Poly-D, L-Lactic Acid


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