Details of all PTE-BuOBrs samples and PTE control sample prepared with PEGDA, DT, and TT in a functional group molar ratio of 100 : 50 : 50 and various amounts of alkylation agent BuOBrs. Extractable contents of all samples before and after thermal treatment at 140 °C for 1.5 h are listed. Thermal and mechanical properties of thermal-treated PTE-BuOBrs networks and their reference PTE samples.
| Sample | BUOBRS (mol%) | Extractable content before thermal treatment (wt%) | Extractable content after thermal treatment (wt%) | T g (DSC) (°C) | T α (DMA) (°C) | Young's modulus (MPa) | Elongation at break (%) |
|---|---|---|---|---|---|---|---|
| PTE | 0 | 3.9 | 3.6 | −44.7 | −30.0 | 1.7 ± 0.1 | 90 ± 11 |
| PTE-BuOBrs1 | 1 | 7 | 3.8 | −44.5 | −25.6 | 1.3 ± 0.1 | 71 ± 19 |
| PTE-BuOBrs2 | 2 | 6.7 | 7.7 | −44.6 | −24.3 | 1.2 ± 0.1 | 71 ± 1 |
| PTE-BuOBrs5 | 5 | 7.7 | 14.3 | −45.0 | −21.0 | 1.1 ± 0.2 | 53 ± 20 |