Table 3.
Values of the degree of swelling, diffusion coefficient, second-order kinetic constant and the release exponent of CsE and CsB aerogels of swelled in water at different temperatures.
| T (°C) | CsE | CsB | ||||||
|---|---|---|---|---|---|---|---|---|
| W∞ (g H2O/g gel) | D × 1010 (m2/s) a | k × 104 (s−1) b | n c | W∞ (g H2O/g gel) | D × 1010 (m2/s) a | k × 104 (s−1) b | n c | |
| 20 | 4.64 | 3.99 | 3.011 | 0.16 | 6.56 | 3.36 | 1.111 | 0.26 |
| 25 | 3.96 | 3.55 | 3.426 | 0.20 | 5.22 | 3.32 | 1.367 | 0.31 |
| 30 | 3.79 | 3.01 | 3.464 | 0.23 | 6.43 | 3.09 | 1.703 | 0.35 |
| 40 | 3.59 | 2.54 | 4.481 | 0.29 | 5.15 | 2.68 | 2.738 | 0.37 |
a Evaluated according to Equation (2), b Evaluated according to Equations (8) and (10), c Dimensionless release exponent from the power law relation.