Table 2.
Effect of pre-gelation storage time at 4°C on the visco-elastic properties of the hydrogel
| storage time | 0 h | 24 h | 72 h |
|---|---|---|---|
| measurement # | 1 | 2 | 3 |
| number of hydrogels | 13 | 5 | 6 |
| mean G'[Pa] | 265.2 | 377.8 | 187.7 |
| standard deviation | 158.1 | 78.1 | 156.4 |
| measurement # | 4 | 5 | 6 |
| number of hydrogels | 13 | 5 | 6 |
| mean G''[Pa] | 39.7 | 28.9 | 25.0 |
| standard deviation | 22.6 | 10.3 | 9.8 |
Storage modules G' and loss modules G" were determined from hydrogels produced immediately after preparing the gel components (0 h), and after storing the liquid gel components for 24 h or 72 h at 4°C. Mean value comparison using ANOVA showed no difference of storage modules between measurements # 1 - 3 and no difference of loss modules between measurements # 4 - 6 (P < 0.05)