Table 2.
Characteristics of PEG hydrogels crosslinked by SH-VS Michael addition.
| Polymer concentration (w/v) | 10% | 15% | 20% |
|---|---|---|---|
|
| |||
| 1 Average G’ (Pa) | 293.89 ± 13.16 | 521.14 ± 25.35 | 823.12 ± 27.94 |
| 2 Average G” (Pa) | 1.1920 ± 0.2573 | 1.7153 ± 0.1989 | 2.3555 ± 0.3719 |
| 3 Average tan δ (×10−3) | 4.2101 ± 0.5294 | 3.2992 ± 0.6235 | 2.8738 ± 0.0195 |
| 4 Winfinite (%) | 95.79 ± 0.03 | 95.33 ± 0.40 | 94.68 ± 0.20 |
| 5 K (min−1) | 0.47 ± 0.01 | 0.38 ± 0.04 | 0.26 ± 0.02 |
| 6 n | 0.543 ± 0.004 | 0.547 ± 0.008 | 0.557 ± 0.006 |
1
G’: storage modulus;
2
G”: loss modulus;
3
tan δ: damping factor;
4
Winfinite: water content when hydrogels reach equilibrium, from equation (5);
5
K: kinetic rate constant, from equation (5);
6
n: diffusion exponent, from equation (7). Values were shown as mean ± SD.