Table 2.
Properties of PHB compared to PHBV and other PHAs [112]
| Polymer | Melting Temperature Tm (◦C) | Glass-Transition Temperature Tg (◦C) | Young’s Modulus (GPa) | Tensile Strength (MPa) | Elongation to Break (%) |
|---|---|---|---|---|---|
| PHB | 180 | 4 | 3.5 | 40 | 5 |
| P(3HB-co-20 mol%3HV) | 145 | −1 | 0.8 | 20 | 50 |
| P(3HB-co-6 mol%3HA) * | 133 | −8 | 0.2 | 17 | 680 |
| Polypropylene | 176 | −10 | 1.7 | 38 | 400 |
| Low-density polyethylene | 130 | −30 | 0.2 | 10 | 620 |
* HA, mixed hydroxyalkanoate co-monomer units including 3-hydroxydecanoate (3 mol%), 3-hydroxydodecanoate (3 mol%), 3-hydroxyoctanoate (1 mol%), 3-hydroxy-cis-5-dodecenoate (1 mol%).