Table 7.
The temperature of 5% and 10% mass loss obtained for PLAs processed with various processing conditions.
| T5% (°C)/T10% (°C) | ||||||
|---|---|---|---|---|---|---|
| 2500HP | Screw Rotational Speed | Temperature | ||||
| 180 °C | 200 °C | 220 °C | 240 °C | 260 °C | ||
| 50 rpm | 328.0/335.6 | 304.2/314.5 | 324.9/333.9 | 326.6/334.9 | 323.3/332.8 | |
| 100 rpm | 329.2/337.0 | 329.5/337.3 | 329.2/336.9 | 328.5/336.5 | 327.9/336.8 | |
| 150 rpm | 328.1/335.5 | 326.9/334.5 | 328.8/336.2 | 329.7/337.6 | 328.6/337.0 | |
| 200 rpm | 328.4/335.8 | 329.3/337.5 | 326.5/333.5 | 327.8/335.8 | 326.6/335.3 | |
| 250 rpm | 330.0/337.8 | 329.1/336.7 | 325.8/333.0 | 328.1/336.5 | 328.0/335.5 | |
| 4032D | Screw Rotational Speed | Temperature | ||||
| 180 °C | 200 °C | 220 °C | 240 °C | 260 °C | ||
| 50 rpm | 294.2/301.5 | 326.7/334.3 | 305.8/314.6 | 324.7/332.9 | 294.9/308.3 | |
| 100 rpm | 323.7/331.8 | 297.4/306.7 | 315.1/324.4 | 321.2/330.6 | 296.1/307.6 | |
| 150 rpm | 324.7/333.1 | 330.9/338.5 | 325.4/333.8 | 324.7/333.0 | 310.4/320.2 | |
| 200 rpm | 319.1/328.8 | 327.6/335.0 | 328.8/336.1 | 323.2/330.8 | 329.8/337.4 | |
| 250 rpm | 319.5/328.7 | 312.4/318.7 | 327.0/334.9 | 330.1/337.4 | 304.6/315.8 | |
| 3100HP | Screw Rotational Speed | Temperature | ||||
| 180 °C | 200 °C | 220 °C | 240 °C | 260 °C | ||
| 50 rpm | 323.2/332.7 | 328.1/336.2 | 327.3/335.4 | 327.4/336.0 | 299.6/313.8 | |
| 100 rpm | 311.4/320.8 | 328.4/336.2 | 326.6/335.5 | 308.4/318.4 | 297.9/311.5 | |
| 150 rpm | 288.0/300.2 | 298.7/310.0 | 327.6/336.2 | 327.3/335.2 | 327.4/335.9 | |
| 200 rpm | 325.7/333.7 | 321.0/330.1 | 328.2/336.4 | 327.7/336.2 | 327.1/335.9 | |
| 250 rpm | 328.1/336.1 | 326.9/335.3 | 327.2/335.0 | 326.8/334.4 | 329.0/335.9 | |
| 3260HP | Screw Rotational Speed | Temperature | ||||
| 180 °C | 200 °C | 220 °C | 240 °C | 260 °C | ||
| 50 rpm | 325.4/333.7 | 325.3/334.4 | 317.5/328.5 | 328.1/336.2 | 297.1/312.4 | |
| 100 rpm | 326.8/335.0 | 326.6/335.1 | 326.8/335.7 | 326.2/334.9 | 324.0/333.1 | |
| 150 rpm | 325.8/334.5 | 327.8/336.3 | 325.9/334.6 | 325.6/335.0 | 320.7/330.6 | |
| 200 rpm | 323.5/331.6 | 327.8/336.6 | 325.1/334.1 | 325.3/334.4 | 278.2/289.8 | |
| 250 rpm | 327.4/336.1 | 319.5/329.7 | 327.3/335.7 | 325.6/333.0 | 326.9/335.4 | |