Composition, Morphology and Properties of Poly(lactic acid) and Poly(butylene succinate) Copolymer System via Coupling Reaction

The poly(lactic acid) (PLA) and poly(butylene succinate) (PBS) copolymer systems with different reactive time were synthesized for the first time via the homo-/cross-coupling reaction of PLA and PBS. Nuclear magnetic resonance spectroscopy (1H-NMR) results showed that the homo-coupling of PLA occurred much earlier than the cross-coupling of PLA with PBS. Also, the compositions of PLA and PBS copolymer systems contained homo-coupled PLA (h-PLA)...