Toughening of Poly(L-lactide) with Blends of Poly(-caprolactone-co-L-lactide) in the Presence of Chain Extender

Table 3

Mechanical properties of PLLA/copolyester blends.

PLLA/copolyester ratio (w/w)	Joncryl® content (phr)	Young’s modulus (MPa)	Stress at break (MPa)	Elongation at break (%)	Impact strength (kJ/m^2)	Hardness Shore D
60/40	-	209 ± 58	10.9 ± 1.9	57.3 ± 8.2	4.3 ± 0.8	54.3 ± 1.2
60/40	1.0	240 ± 69	11.2 ± 2.2	40.0 ± 1.8	14.5 ± 0.6	57.4 ± 0.7
60/40	2.0	328 ± 16	14.6 ± 1.2	15.8 ± 6.0	16.9 ± 1.4	58.5 ± 0.9
100/0	2.0	1491 ± 38	57.6 ± 2.3	6.0 ± 0.3	2.2 ± 0.5	87.2 ± 0.8
90/10	2.0	1210 ± 101	44.8 ± 2.0	6.2 ± 0.2	3.3 ± 0.6	81.2 ± 1.8
80/20	2.0	1122 ± 46	41.8 ± 0.2	6.1 ± 0.1	5.6 ± 0.9	66.7 ± 0.8