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CAS No: 106989-11-1
Molecular Formula: (C6H8O4)n
Density: ‎1.2-1.3 g/ml
Chemical NamesPoly(D-lactic acid)
Tg: 60-65 C
Appearance: Pale yellow particle
Minimal order quantity: 30 gram

PDLA is another type of polylactide (PLA). PDLA is created through the polymerization of D-lactide. PDLA and PLLA have similar melt points and strengths.

Commercial polylactic acid is prepared by ring-opening polymerization of lactide. Lactide is made from lactic acid, and lactic acid can be derived from plant fermentation. Plant fermentation produces L-lactic acid, so the raw materials are very cheap, and the degradation of polylactic acid will produce lactic acid which is harmless to the human body, and D-lactic acid is harmful to the human body and is expensive. Therefore, all commercial products are PLLA, and PDLA is generally only used for research.

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