Table 1. Physical properties of all samples.
| SampleA | density (g cm−3) | porosity (%) | SBET (m2 g−1) | pore volumeB (cm3 g−1) | pore sizeB (nm) | Young’s modulus (MPa) | Compressive stress at 50% strainC (MPa) |
|---|---|---|---|---|---|---|---|
| S-0 | 0.024 | 98.4 | 268.9 | 1.251 | 17.4 | 1.1 | 0.06 |
| S-50 | 0.048 | 96.6 | 198.3 | 0.682 | 12.7 | 1.2 | 0.12 |
| S-75 | 0.052 | 96.2 | 190.6 | 0.709 | 15.7 | 2.8 | 0.13 |
| S-90 | 0.080 | 94.0 | 58.2 | 0.116 | 8.3 | 5.9 | 0.79 |
| S-95 | 0.403 | 69.3 | 5.1 | 0.015 | 8.0 | 25.1 | 5.46 |
ANumber in the code refers to the lignin content used in the sample (wt%): S-0: pure cellulose, S-50: 50% lignin, S-75: 75% lignin, S-90: 90% lignin, S-95: 95% lignin.
BObtained from desorption isotherms by BJH method.
CFor samples with 2.5 mm thick.