Synthesis, structure and thermal properties of propylene oxide-carbon dioxide-L-lactide terpolymers

Terpolymers with different L-lactic acid contents in the poly(propylene carbonate) chain were synthesized by the terpolymerization of carbon dioxide, propylene oxide and L-lactide, catalyzed by zinc adipate. The terpolymerization products were characterized by H-1 and C-13 NMR, 2D {H-1-C-13} HMBC and FT-IR spectroscopy, DSC, TGA and GPC.