Synergistic reinforcing of poly(lactic acid)-based systems by polybutylene succinate and nano-calcium carbonate

Synergistic reinforcing of poly(lactic acid)-based systems by polybutylene succinate and nano-calcium carbonate

Bio-based poly(lactic acid) (PLA) ternary systems were prepared by the solution blending of PLA,polybutylene succinate (PBS), and nano-CaCO3. The effects of PBS and nano-CaCO3 on the thermalstability, fracture toughness, mechanical properties, and morphology of PLA were investigated usingseveral techniques. The morphology of the systems was observed by scanning electron microscopy(SEM) and transmission electron microscopy (TEM). The fracture toughness and flexural strength of PLAwere improved by the introduction of PBS and further enhanced by the addition of nano-CaCO3. Theelastic modulus of PLA decreased with the addition of PBS alone, whereas the elastic modulus increasedwith the simultaneous addition of PBS and nano-CaCO3.

Bio-based poly(lactic acid) (PLA) ternary systems were prepared by the solution blending of PLA,polybutylene succinate (PBS), and nano-CaCO3. The effects of PBS and nano-CaCO3 on the thermalstability, fracture toughness, mechanical properties, and morphology of PLA were investigated usingseveral techniques. The morphology of the systems was observed by scanning electron microscopy(SEM) and transmission electron microscopy (TEM). The fracture toughness and flexural strength of PLAwere improved by the introduction of PBS and further enhanced by the addition of nano-CaCO3. Theelastic modulus of PLA decreased with the addition of PBS alone, whereas the elastic modulus increasedwith the simultaneous addition of PBS and nano-CaCO3.