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| samples | T–5% (°C) | Tmax (°C) | char residue (%) at 700 °C |
|---|---|---|---|
| PFR | 217.2 | 237.4, 319.6 | 10.52 |
| pure PU | 302.3 | 328.9, 391.0 | 3.3 |
| PU-5 | 295.4 | 328.2, 389.4 | 4.4 |
| PU-8 | 290.3 | 329.6, 384.8 | 4.6 |
| PU-10 | 282.6 | 289.3, 328.5, 380.5 | 4.7 |
