Table 2.
The Differential Scanning Calorimetry DSC analysis of PHA samples.
| Sample | Tg (°C) | ΔHcc (J/g) | Tcc (°C) | ΔHm (J/g) | Tm (°C) | ΔH0 (J/g) | T0 (°C) |
|---|---|---|---|---|---|---|---|
| Before Ageing | |||||||
| PHA | 36.79 | 15.36 | 76.75 | (1) 6.53 (2) 33.93 |
(1) 127.85 (2) 156. 67 |
9.66 | 199.27 260.33 |
| PHA/Rutin | 39.67 | 13.37 | 81.51 | (1) 5.76 (2) 28.93 |
(1) 128.52 (2) 156.59 |
1.31 | 235.12 255.89 |
| PHA/Hesperidin | 36.57 | 13.87 | 77.35 | (1) 6.15 (2) 32.57 |
(1) 128.41 (2) 157. 36 |
20.63 | 243.57 275.98 |
| PHA/Chimassorb 944 | 37.37 | 16.66 | 78.47 | (1) 3.86 (2) 31.50 |
(1) 126.52 (2) 156. 49 |
1.71 | 229.18 251.18 |
| After Thermo-Oxidation Ageing | |||||||
| PHA | 35.14 | 14.73 | 75.02 | (1) 6.09 (2) 35.57 |
(1) 123.17 (2) 156.37 |
2.12 | 209.36 251.44 |
| PHA/Rutin | 36.93 | 17.50 | 76.49 | (1) 9.48 (2) 36.05 |
(1) 132.57 (2) 156. 43 |
3.68 | 195.74 255.11 |
| PHA/Hesperidin | 35.30 | 16.50 | 73.33 | (1) 4.95 (2) 36.27 |
(1) 128.93 (2) 155.68 |
19.00 | 201.67 264.40 |
| PHA/Chimassorb 944 | 37.12 | 15.85 | 76.17 | (1) 4.44 (2) 34.74 |
(1) 125.25 (2) 155.88 |
1.61 | 207.06 243.30 |
| After Weathering Ageing | |||||||
| PHA | 27.85 | 13.54 | 71.15 | (1) 4.56 (2) 34.16 |
(1) 129.94 (2) 153.67 |
4.23 | 185.68 243.37 |
| PHA/Rutin | 26.24 | 14.41 | 71.94 | (1) 4.44 (2) 35.67 |
(1) 126.63 (2)154.26 |
9.52 | 204.71 262.03 |
| PHA/Hesperidin | 35.38 | 11.44 | 63.90 | (1) 0.12 (2) 30.33 |
(1) 100.29 (2) 130.63 |
7.36 | 200.69 249.40 |
| PHA/Chimassorb 944 | 30.35 | 8.29 | 67.09 | (1) 3.08 (2) 28.94 |
(1) 123.08 (2) 153.01 |
8.13 | 204.04 251.20 |
Tg = glass transition temperature, ΔHcc = enthalpy of crystallization, Tcc = crystallization temperature, ΔHm = enthalpy of melting, Tm = melting temperature (first melting endotherm (1) and second melting endotherm (2)), ΔH0 = enthalpy of oxidation, T0 = initial and final oxidation temperature.