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The melting temperatures (Tm) and glass transition temperatures (Tg) of poly(lactic acid) (PLA)-based biocomposites with pristine lignin and COOH-lignin content.
| Lignin Content (wt.%) |
Pristine Lignin | COOH-Lignin | ||
|---|---|---|---|---|
| Tm (°C) | Tg (°C) | Tm (°C) | Tg (°C) | |
| 5 | 152.2 | 63.4 | 152.1 | 64.4 |
| 10 | 150.1 | 60.6 | 152.5 | 63.9 |
| 15 | 151.7 | 62.5 | 151.5 | 63.4 |
| 20 | 149.2 | 60.3 | 152.2 | 65.0 |
| Std. Dev. | 1.4 | 1.5 | 0.4 | 0.7 |
Tm and Tg of pure PLA measured by DSC in this study are 150.7 and 64.7 °C, respectively.
