Table 1.
The Differential Scanning Calorimetry DSC analysis of PLA samples.
| Sample | Tg (°C) | ΔHcc (J/g) | Tcc (°C) | ΔHm (J/g) | Tm (°C) | ΔH0 (J/g) | T0 (°C) |
|---|---|---|---|---|---|---|---|
| Before Ageing | |||||||
| PLA | 59.66 | 18.94 | 108.10 | 16.82 | 148.68 | 21.69 | 229.41 298.22 |
| PLA/Rutin | 59.15 | 12.20 | 111.33 | 12.54 | 148.97 | 11.85 | 245.79 305.38 |
| PLA/Hesperidin | 59.40 | 19.45 | 107.25 | 19.40 | 148.35 | 8.38 | 256.29 308.72 |
| PLA/Chimassorb 944 | 59.81 | 8.13 | 114.90 | 6.07 | 151.04 | 26.52 | 246.22 19.73 |
| After Thermo-Oxidation Ageing | |||||||
| PLA | 58.37 | 27.59 | 107.76 | 23.67 | 148.43 | 19.08 | 223.76 290.52 |
| PLA/Rutin | 59.58 | 26.83 | 108.43 | 21.42 | 148.94 | 2.36 | 242.58 271.04 |
| PLA/Hesperidin | 58.51 | 24.34 | 108.27 | 21.44 | 148.32 | 0.94 | 248.57 250.67 |
| PLA/Chimassorb 944 | 58.67 | 7.57 | 111.92 | 5.61 | 150.63 | 7.03 | 306.02 313.25 |
| After Weathering Ageing | |||||||
| PLA | 58.50 | 27.92 | 107.92 | 23.03 | 149.04 | 26.45 | 259.74 293.48 |
| PLA/Rutin | 58.43 | 30.56 | 105.52 | 25.06 | 147.79 | 10.84 | 237.57 300.43 |
| PLA/Hesperidin | 42.02 | 34.63 | 92.66 | 37.73 | 139.99 | 17.14 | 230.06 270.01 |
| PLA/Chimassorb 944 | 58.44 | 11.04 | 111.85 | 8.79 | 150.46 | 15.72 | 271.96 316.19 |
Tg = glass transition temperature, ΔHcc = enthalpy of crystallization, Tcc = crystallization temperature, ΔHm = enthalpy of melting, Tm = melting temperature, ΔH0 = enthalpy of oxidation, T0 = initial and final oxidation temperature.