Table 1.
Range of typical properties of PHB (Bucci et al., 2005; Bugnicourt et al., 2014; dos Santos et al., 2017; Keskin et al., 2017; Rajan et al., 2017).
| Property | Value | PP |
|---|---|---|
| Density, ρ (g/cm3) | 1.23 | 0.095 |
| Glass transition temperature, Tg (°C) | 4–7 | −10 |
| Melting temperature, Tm (°C) | 175–180 | 176 |
| Crystallinity, Xcr (%) | 50–90 | 50–70 |
| Young's modulus, YM (GPa) | 1–2 | 1.5–1.7 |
| Tensile strength, TS (MPa) | 15–40 | 38 |
| Elongation at break, EB (%) | 1–15 | 4 |
| Water vapor transmission rate, WVTR (g·mm/m2·day MPa) | 1–5 | 0.2–0.4 |
| Oxygen transmission rate, OTR (cc·mm/m2·day) | 2 | 67.7 |