Table 5.
Mechanical properties of PLA, PLA/ESO, and PLA/SAL/ESO composites.
| Entry | Tensile Strength (MPa) | Elongation at Break (%) | Flexural Strength (MPa) | Flexural Modulus (MPa) | Notched Impact Strength (kJ/m2) |
|---|---|---|---|---|---|
| PLA | 72.5 ± 1.2 | 6 ± 0.5 | 102.3 ± 2.3 | 3123 ± 80 | 3.5 ± 0.2 |
| PLA/SAL/ESO1 | 54.5 ± 0.5 | 5 ± 0.6 | 90.8 ± 2.0 | 3171 ± 75 | 3.6 ± 0.3 |
| PLA/SAL/ESO2 | 53.5 ± 0.8 | 8 ± 0.6 | 77.1 ± 1.9 | 3022 ± 56 | 4.1 ± 0.2 |
| PLA/SAL/ESO3 | 51.2 ± 0.5 | 13 ± 1.0 | 68.9 ± 1.8 | 2848 ± 83 | 4.3 ± 0.1 |
| PLA/SAL/ESO4 | 47.8 ± 0.6 | 15 ± 1.3 | 60.5 ± 2.3 | 2803 ± 79 | 4.8 ± 0.2 |
| PLA/SAL/ESO5 | 47.1 ± 0.5 | 17 ± 1.8 | 53.9 ± 2.1 | 2720 ± 72 | 4.3 ± 0.3 |
| PLA/ESO | 60.4 ± 1.3 | 9 ± 0.9 | 78.1 ± 2.4 | 2990 ± 58 | 4.1 ± 0.2 |
| PLA/lignin/ESO | 45.9 ± 0.5 | 5 ± 0.5 | 58.8 ± 1.3 | 2793 ± 49 | 4.0 ± 0.1 |