an assessment on morphological and thermal properties of the poly (lactic acid)/poly (butylene adipate-co-terephthalate) films with chain extender

The effect of chain extender (ce) on improving compatibility, microstructure, thermal stability, melt and cold crystallization behavior of poly (lactic acid) (pla)/poly (butylene adipate-co-terephthalate) (pbat) blends are investigated using solvent casting method. morphological observations (sem) showed a core-shell structure, that pbat particles act as a nucleating agent for pla matrix, but it is also possible to form a fibrillar structure. by adding a ce, the compatibility of pla and pbat improves, and by reducing the interfacial tension due to the formation of pla-co-pbat, the refinement of the dispersed phase can be explained.