Research Article
Interpenetrating Polymer Network Hydrogels Based on Gelatin and PVA by Biocompatible Approaches: Synthesis and Characterization
Table 2
The properties of IPN PVA/GE hydrogels after one freezing-thawing cycle.
| Samples | IPN-1 | IPN-2 | IPN-3 | IPN-4 |
| Gel fraction (%) | 25 ± 1.20 | 36 ± 1.35 | 49 ± 1.50 | 58 ± 1.65 | EDS (%) | 135 ± 4.50 | 132 ± 3.75 | 130 ± 3.45 | 130 ± 3.50 | EWC (%) | 45 ± 2.00 | 44.5 ± 2.25 | 42.5 ± 2.50 | 42 ± 2.75 | Stress (MPa) | 0.11 ± 0.14 | 0.15 ± 0.18 | 0.25 ± 0.24 | 0.28 ± 0.22 | Strain (%) | 18.23 ± 4.60 | 25.67 ± 7.80 | 34.56 ± 12.90 | 47.78 ± 14.65 | Elastic modulus (MPa) | 0.35 ± 0.45 | 0.41 ± 0.49 | 0.56 ± 0.62 | 0.65 ± 0.64 | Tensile strength (MPa) | 0.30 ± 0.05 | 0.42 ± 0.09 | 0.52 ± 0.15 | 0.58 ± 0.19 | Solid density () (Mg m−3) | 1.13 | 1.20 | 1.29 | 1.34 |
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