Heat Treatment Effects on the Mechanical Properties and Morphologies of Poly (Lactic Acid)/Poly (Butylene Adipate-co-terephthalate) Blends

Table 4

The impact strength (KJ/m) for all samples under the melt-quenching and various annealing.

	Melt-quenching	Annealing at 100°C for 24 h	Annealing at 100°C for 8 h	Break after Izod impact Testing^1
PLA	3.85	3.85	3.62	○
PLA/PBAT (70/30)	19.03	13.65	12.11	○
PLA/PBAT (50/50)	18.77	7.57	7.01	○
PLA/PBAT (30/70)	33.56	21.6	22.58	×
PBAT	30.5	30.75	29.24	×

○: Fracture.
×: Has not destroy.
¹The extent of damage of sample after Izod impact testing.