Thermal properties of PLA, PLA/CD blends and CDa.
| CD content (%) | T g (°C) | T c (°C) | ΔHc (J g−1) | T cc (°C) | ΔHcc (J g−1) | T m (°C) | ΔHm (J g−1) | Crystallinity (%) |
|---|---|---|---|---|---|---|---|---|
| 0 | 61 | — | — | 105 | 33.2 | 169 | 33.7 | 0.5 |
| 5 | 45 | 93 | 1.0 | 96 | 29.9 | 165 | 32.6 | 2.9 |
| 10 | 43 | 85 | 6.1 | 85 | 25.8 | 162 | 37.8 | 12.9 |
| 15 | 28 | 78 | 16.1 | 70 | 12.5 | 159 | 39.2 | 28.7 |
| 20 | 15 | 78 | 33.1 | — | — | 158 | 40.4 | 43.4 |
| 25 | 5 | 77 | 36.5 | — | — | 157 | 42.7 | 45.9 |
| 30 | −5 | 74 | 42.1 | — | — | 153 | 43.0 | 46.2 |
| 100 | −50 | — | — | — | — | — | — | — |
a
T g was obtained from the quenched samples; the values of ΔHc, ΔHcc, ΔHm were normalized; the crystallinity was calculated by DSC curves.