Table 6.
Data showing swelling behaviour of CS/PAH films in CaCl2 solutions of variable molar concentrations.
| [CaCl2] | CTH-0 | CTH-1 | CTH-2 | CTH-3 | CTH-4 | CTH-5 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Swelling (g/g) | SD (±) | Swelling (g/g) | SD (±) | Swelling (g/g) | SD (±) | Swelling (g/g) | SD (±) | Swelling (g/g) | SD (±) | Swelling (g/g) | SD (±) | |
| 0.1 M | 30.95 | 0.99 | 25.54 | 0.99 | 18.69 | 0.56 | - | - | 24.83 | 0.84 | 23.87 | 1.21 |
| 0.3 M | 14.55 | 0.49 | 17.22 | 1.26 | 12.16 | 1.63 | - | - | 8.66 | 1.06 | 13.96 | 0.74 |
| 0.5 M | 7.04 | 0.90 | 9.50 | 1.59 | 10.82 | 0.69 | 8.91 | 1.69 | 7.48 | 0.15 | 7.51 | 0.56 |
| 0.7 M | 8.33 | 1.50 | 10.38 | 1.59 | 9.06 | 0.57 | 8.10 | 0.01 | 6.76 | 0.37 | 10.40 | 1.63 |
| 0.9 M | 5.67 | 0.98 | 10.06 | 0.97 | 9.18 | 1.89 | 7.09 | 0.75 | 8.82 | 0.18 | 11.70 | 0.62 |
| 1.0 M | 7.11 | 0.25 | 11.88 | 1.07 | 7.80 | 0.68 | 4.42 | 0.26 | 11.17 | 2.86 | 8.15 | 1.23 |
SD means standard deviation; in order to obtain standard deviation, the experiment was repeated three times for each film.