Table 6.
TG data for PLA containing powdered rosemary ethanolic extract.
| Sample | Degradation Stage | Tonset (°C) | Tpeak (°C) | ΔW (%) | T10 (°C) | T20 (°C) |
|---|---|---|---|---|---|---|
| PLA | I residue |
339 | 358 | 98.72 1.28 |
332.5 | 341.5 |
| PLA/0.75R | I residue |
310 | 338 | 98.50 1.50 |
312.5 | 321.5 |
| PLA/PEG | I II residue |
280 373 |
322 402 |
82.51 16.31 1.18 |
285.5 | 298 |
| PLA/PEG/0.5R | I II residue |
285 365 |
336 403 |
83.03 15.04 1.93 |
294 | 207.5 |
Tonset—the temperature at which the thermal degradation start; Tpeak—the temperature at which the degradation rate is maximum; T10, T20—the temperatures corresponding to 10 wt % and 20 wt % mass losses; ΔW—residual mass at 600 °C.