Table 1. Mechanical Properties of the PBAT/PLA/Silk Powder Blends with and without Joncryl.
| matrix | Joncryl (phr) | tensile modulus (MPa) | tensile strength (MPa) | elongation at yield (%) | elongation at break (%) | flexural modulus (MPa) | flexural strength (MPa) | impact strength (J/m) |
|---|---|---|---|---|---|---|---|---|
| PLA | 0 | 3637 ± 327 | 78.8 ± 1.8 | 2.76 ± 0.19 | 3.73 ± 0.76 | 3684 ± 240 | 115 ± 4.3 | 15 ± 1.5 |
| PBAT | 0 | 73 ± 2 | 26.3 ± 0.6 | 343 ± 5.0 | 357 ± 18 | 99 ± 0.78 | 4.67 ± 0.03 | nonbreak |
| PBAT 60/PLA40 | 0 | 1320 ± 70 | 31.9 ± 0.9 | 3.07 ± 0.16 | 183 ± 12 | 1250 ± 16.2 | 38.5 ± 0.5 | 474 ± 34 |
| 0.3 | 1630 ± 52 | 34.5 ± 0.7 | 3.06 ± 0.05 | 142 ± 7 | 1409 ± 23.3 | 42.2 ± 0.7 | 522 ± 12 | |
| 0.5 | 1647 ± 92 | 33.5 ± 0.5 | 3.02 ± 0.04 | 149 ± 9 | 1375 ± 5.8 | 40.9 ± 0.3 | 535 ± 49 | |
| 10% Silk powder | 0 | 1120 ± 120 | 24.1 ± 0.5 | 3.97 ± 0.43 | 77.2 ± 39.2 | 1200 ± 6.2 | 35.5 ± 0.2 | 108 ± 12 |
| 0.3 | 1490 ± 73 | 26.8 ± 0.5 | 3.20 ± 0.02 | 47.9 ± 12.9 | 1312 ± 15.4 | 37.8 ± 0.6 | 71 ± 8 | |
| 0.5 | 1347 ± 89 | 25.7 ± 0.4 | 3.54 ± 0.14 | 49.5 ± 13.0 | 1261 ± 17.7 | 37.1 ± 0.6 | 88 ± 20 | |
| 20% Silk powder | 0 | 1262 ± 30 | 22.8 ± 0.5 | 3.41 ± 0.14 | 25.1 ± 9.0 | 1265 ± 21.8 | 33.6 ± 0.6 | 36 ± 4 |
| 30% Silk powder | 0 | 1224 ± 99 | 20.4 ± 0.6 | 3.31 ± 0.15 | 10.1 ± 5.1 | 1285 ± 39.5 | 31.6 ± 1.4 | 28 ± 3 |