Table 2.
DMA data for neat PHB and the nanocomposites with different ZnO loadings.
| ZnO (wt %) | Tg (°C) | E'−100 °C (GPa) | E'25 °C (GPa) | E'100 °C (GPa) | 102 tan δmax (a.u.) | FWHM (°C) | tan δarea (a.u.) |
|---|---|---|---|---|---|---|---|
| 0 | 17.9 | 1.81 | 0.78 | 0.24 | 8.11 | 13.9 | 0.79 |
| 1.0 | 22.1 | 2.27 | 0.93 | 0.30 | 7.23 | 19.2 | 1.06 |
| 2.0 | 28.4 | 2.39 | 1.11 | 0.37 | 7.98 | 22.9 | 1.13 |
| 5.0 | 27.7 | 2.59 | 1.11 | 0.36 | 6.35 | 26.8 | 1.18 |
| 10.0 | 32.6 | 2.78 | 1.18 | 0.39 | 7.19 | 24.5 | 1.11 |
E': storage modulus; Tg: glass transition temperature; tan δmax: tan δ maximum value; FWHM: full-width at half maximum of tan δ peak; tan δarea: area under tan δ peak.