Table 3. Formulation of the Synthesized Thermosets.
| resin | epoxidated fraction | epoxy groups (mmol/g)a | n̅b | cross-linker | lignin content (w/w%) | Tg (°C)c | ΔCp (J/g°C)c | Tαd |
|---|---|---|---|---|---|---|---|---|
| ET1–2000 | EE1 | 5.1 | 3.6 | JD2000 | 30 | –49 | 0.42 | –47 |
| ET2–2000 | EE2 | 5.1 | 4.6 | “ | 31 | –51 | 0.28 | –53 |
| ST2000 | SE | 4.8 | 3.3 | “ | 33 | –50 | 0.37 | –52 |
| ET1–400 | EE1 | 5.1 | 3.6 | JD400 | 64 | 73 | 0.37 | 35 |
| ET2–400 | EE2 | 5.1 | 4.6 | “ | 66 | n.d. | n.d. | 89 |
| ST400 | SE | 4.8 | 3.3 | “ | 66 | 60 | 0.58 | 79 |
| Araldite GY 6010e | DGEBA | 5.3 | 2.0 | “ | 0 (66 w/w% of DGEBA) | 53 | n.r. | n.r. |
a
Determined by 1H NMR;
b
Average number of epoxy groups available for each macromolecule;
c
Determined by DSC;
d
Determined by DMA;
e
All the data are obtained from the technical data sheet.43