Table 1.
Characteristics of CNF and CNF/XG aerogels prepared from the aqueous dispersions.
| Density of the Aqueous Dispersions | Aerogels | Apparent Density (kg/m3) |
Apparent Porosity (%) | Pore Size (µm) |
Abs. Capacity (g H2O g−1 Aerog.) |
|---|---|---|---|---|---|
| UD aerogels | |||||
| 2 wt % | CNF | 23.4 ± 2.1 | 98.4 ± 0.1 | - | 42.1 ± 4.4 |
| CNF95XG5 | 22.7 ± 2.0 | 98.6 ± 0.4 | 40–90 µm | 42.9 ± 3.4 | |
| CNF60XG40 | 24.1 ± 0.9 | 98.4 ± 0.1 | 30–70 µm | 36.9 ± 2.0 | |
| CNF | 32.2 ± 1.9 | 97.9 ± 0.0 | - | 31.6 ± 1.4 | |
| 3 wt % | CNF95XG5 | 30.2 ± 2.8 | 98.0 ± 0.3 | 50–140 µm | 32.7 ± 3.2 |
| CNF60XG40 | 30.6 ± 1.9 | 97.8 ± 0.1 | 60–120 µm | 29.2 ± 3.2 | |
| ND aerogels | |||||
| CNF | 24.7 ± 0.7 | 98.4 ± 0.1 | - | 37.3 ± 1.4 | |
| 2 wt % | CNF95XG5 | 24.6 ± 1.1 | 98.6 ± 0.2 | 30–90 µm | 38.9 ± 1.4 |
| CNF60XG40 | 23.5 ± 1.4 | 98.4 ± 0.1 | 50–110 µm | 39.8 ± 1.4 | |
| CNF | 31.7 ± 0.9 | 97.9 ± 0.1 | - | 29.2 ± 1.6 | |
| 3 wt % | CNF95XG5 | 31.1 ± 4.5 | 97.9 ± 0.3 | 20–120 µm | 26.8 ± 0.7 |
| CNF60XG40 | 32.6 ± 1.9 | 97.8 ± 0.1 | 20–120 µm | 27.6 ± 0.9 |