Table 2.
Glass transition temperature (Tg), crystallization temperature (Tc), melting temperature (Tm), and crystallinity (Xc) obtained from DSC curves, along with starting thermal decomposition temperature (TDS), end of thermal decomposition temperature (TDE), and activation energy of thermal decomposition (Ea) obtained from TG of PCL and PLA after 8 weeks of degradation.
| Sample | Tg (°C) | Tc (°C) | Tm (°C) | Xc (%) | TDS (°C) | TDE (°C) | Ea (kJ/mol) |
|---|---|---|---|---|---|---|---|
| PCL | −65.2 | 37.5 | 54 | 59.3 | 360.6 | 450.9 | 221.2 |
| PCL/PBS/37/7 | −70.6 | 36.4 | 54.8 | 59.6 | 361.4 | 450.6 | 218.8 |
| PCL/PBS/37/2 | −65.3 | 36.1 | 53.5 | 59.9 | 365.2 | 436.7 | 174.4 |
| PCL/PBS/42/7 | −65.3 | 35.5 | 53.2 | 65.5 | 365.6 | 433.3 | 183.8 |
| PCL/PBS/42/2 | −69.95 | 35.1 | 53.5 | 63.6 | 367.1 | 433.2 | 160.3 |
| PCL/AS/37/7 | −78.3 | 36.7 | 53.8 | 57.8 | 364.3 | 426.8 | 162.7 |
| PCL/AS/37/2 | −79.7 | 36.8 | 53.8 | 59.0 | 366.4 | 434.9 | 181.3 |
| PCL/AS/42/7 | −79.4 | 36.4 | 53.4 | 60.0 | 365.3 | 434.1 | 177.6 |
| PCL/AS/42/2 | −82.2 | 36.7 | 53.1 | 61.5 | 366.4 | 434.4 | 177.9 |
| PLA | 48.5 | 107.7 | 146.7 | 2.6 | 324.2 | 388.7 | 190.2 |
| PLA/PBS/37/7 | 46.8 | 96.9 | 143.7 | 3.2 | 319.8 | 385.9 | 163.0 |
| PLA/PBS/37/2 | 47.1 | 97.6 | 145.6 | 3.1 | 319.7 | 385.2 | 140.4 |
| PLA/PBS/42/7 | 41.1 | 103.5 | 134.5 | 2.8 | 316.9 | 384.7 | 154.2 |
| PLA/PBS/42/2 | 41.6 | 100 | 135.5 | 2.6 | 316.6 | 384.4 | 144.0 |
| PLA/AS/37/7 | 47.3 | 96.6 | 144.2 | 3.1 | 308.9 | 378.5 | 158.2 |
| PLA/AS/37/2 | 46.5 | 99.2 | 141.7 | 3.5 | 318.0 | 385.1 | 170.1 |
| PLA/AS/42/7 | 45.7 | 99.3 | 140.2 | 4.2 | 314.1 | 382.1 | 157.1 |
| PLA/AS/42/2 | 47.5 | 95 | 145.3 | 4.6 | 310.7 | 383.0 | 177.2 |