| Samples | BP | BPK | BPMK |
| Maximum stress (MPa) | 4.4 | 3.3 | 5.6 |
| Breaking stress (MPa) | 3.5 | 2.5 | 4.7 |
| Breaking strain (%) | 33.2 | 56.3 | 45.9 |
| Young’s modulus (MPa) | 19 ± 1 | 7 ± 1 | 25 ± 1 |