Melting Behaviour of Poly(L-lactic acid)/Ethylene bis-Stearamide Composites

The melting behaviour of poly(L-lactic acid)(PLLA)/ethylene bis-stearamide (EBS) composites were investigated by using differential scanning calorimetry. The melting behaviour of PLLA/EBS composites was affected significantly by EBS content, crystallization temperature and crystallization time and double-melting peak resulted from melting-recrystallization. With increasing of EBS content, the ratio of peak area between low-temperature melting peak and high-temperature melting peak has large difference. And increasing of crystallization time made the low-temperature melting peak shift to high temperature with increasing of crystallization time and the melting peak get sharper. However, the high-temperature melting peak hardly move with increasing of crystallization time. Increasing of crystallization temperature made the low-temperature melting peak and high-temperature melting peak shift to the opposite direction.