Table 3.
Thermal properties and crystallinity of neat polymers and PLA/PBAT/PBS/nano talc composite 3D prints.
| PLA/PBAT/PBS/nano talc | Tc (°C) | Tg (°C) | Tcc (°C) | ΔHcc (J/g) | PBS Tm (°C) | PLA Tm1 (°C) | PLA Tm2 (°C) | ΔHm (J/g) | Xc (%) |
|---|---|---|---|---|---|---|---|---|---|
| Neat materials 1 | |||||||||
| Neat PLA | - | 59.1 | - | - | - | 174.5 | - | 7.7 | 8.24 |
| Neat PBAT 2 | 39.6 | −31.0 | - | - | - | - | - | 20.7 | 18.2 |
| Neat PBS | 86.3 | −35.7 | - | - | 114.2 | - | - | 69.0 | 62.6 |
| 3D printed dumbbell 1st heating | |||||||||
| 70/30/0/10 | 114.0 | 60.7 | 87.3 | 12.2 | - | 174.1 | - | 34.5 | 37.7 |
| 70/0/30/10 | 116.9 | 60.1 | 84.8 | 2.8 | 112.9 | 174.0 | - | 33.9 | 52.8 |
| 70/10/20/10 | 113.5 | 59.4 | 87.1 | 5.9 | 112.7 | 174.3 | - | 33.9 | 47.3 |
| 3D printed dumbbell 2nd heating | |||||||||
| 70/30/0/10 | - | 60.4 | - | - | - | 170.8 | 177.3 | 29.8 | 50.5 |
| 70/0/30/10 | - | 58.3 | - | - | 112.8 | 171.1 | 177.0 | 30.4 | 51.5 |
| 70/10/20/10 | - | 60.0 | - | - | 112.9 | 170.6 | 177.3 | 30.2 | 51.1 |
1 Neat material data measured from the cooling cycle and the 2nd heating cycle; 2 Melting temperature (Tm) of PBAT is 120.3 °C.