Table 1.
Properties of packaging films based on polyhydroxyalkanoates (PHAs).
| Type of PHAs | Production Technique | Tg (°C) | Tm (°C) | EM (GPa) | TS (MPa) | E (%) | Xc (%) | WVP·1015 | OP·1019 | Reference |
|---|---|---|---|---|---|---|---|---|---|---|
| PHB | Solvent casting | −2–9 | 160–180 | 1.2–3.6 | 19–44 | 2–5 | 57–63 | 2–10 | 8 | [20,21,22] |
| Melt blending | 10–18 | 170–180 | 1.5–3.5 | 8–40 | 0.8–2.1 | 45–50 | 8 | 5–8 | [23,24,25] | |
| P(3HB-3HV8 *) | Melt blending | 7 | 170.6–171.2 | 1.7 | 37 | 3.4 | 73.8–99.06 | 5.7 | - | [26,27] |
| P(3HB-3HV12 *) | Solvent casting | - | 140–155 | 0.6 | 6.4 | 1.4 | 33 | 50 | 15 | [28] |
| Melt blending | −3–2 | 140–155 | 1.7 | 14.6 | 1.2 | 37 | 4 | 15–18 | [29,30,31] | |
| P(3HB-3HV50–55 *) | Solvent casting | −10 | 77 | - | 16 | 1200 | - | - | - | [29] |
| Melt blending | 0 | 162 | 0.4 | 13.4 | 230 | - | - | - |
Tg: Glass transition temperature; Tm: Melting temperature; EM: Elastic modulus; TS: Tensile strength; E: Elongation at break; Xc: Degree of crystallinity; WVP: Water vapor permeability (kg·m/m2·Pa·s); OP: Oxygen permeability (m3·m/m2·s·Pa). * Indicates the mol% comonomer unit.