Table 3.
Mechanical properties of the injection-molded parts of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) [P(3HB-co-3HHx)]/hydroxyapatite nanoparticles (nHA) in terms of maximum tensile stress (σmax), tensile modulus (Et), elongation at break (εb), maximum flexural stress (σf), flexural modulus (Ef), Shore D hardness, and impact strength.
| Part | σmax (MPa) | Et (MPa) | εb (%) | σf (MPa) | Ef (MPa) | Shore D Hardness | Impact Strength (kJ/m2) |
|---|---|---|---|---|---|---|---|
| P(3HB-co-3HHx) | 17.7 ± 1.1 | 1022.3 ± 59.2 | 19.4 ± 0.8 | 24.1 ± 1.9 | 735.3 ± 43.5 | 64.2 ± 0.8 | 5.1 ± 0.3 |
| P(3HB-co-3HHx) + 2.5 nHA | 16.1 ± 0.5 * | 1097.0 ± 52.3 * | 12.9 ± 0.3 * | 25.6 ± 1.0 * | 744.1 ± 26.3 | 64.0 ± 0.9 | 3.5 ± 0.2 * |
| P(3HB-co-3HHx) + 5 nHA | 15.8 ± 0.6 | 1113.1 ± 28.3 | 12.5 ± 0.8 | 26.4 ± 1.8 | 813.2 ± 24.1 * | 65.2 ± 0.8 * | 2.6 ± 0.2 * |
| P(3HB-co-3HHx) + 10 nHA | 15.5 ± 0.5 | 1398.2 ± 68.3 * | 10.4 ± 0.6 * | 26.7 ± 0.5 | 919.8 ± 38.6 * | 65.8 ± 1.1 | 2.2 ± 0.1 * |
| P(3HB-co-3HHx) + 20 nHA | 14.2 ± 0.2 * | 1681.4 ± 56.3 * | 6.5 ± 0.7 * | 26.9 ± 1.9 | 1182.5 ± 45.2 * | 69.4 ± 0.5 * | 1.7 ± 0.2 * |
* Indicates a significant difference compared with the previous sample (p < 0.05). Level of significance (p) values are included in Table S1.