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Mechanical properties of the polyurethane scaffolds
| Sample | NCO:OH ratio | Chain extender | Porosity (%) | Compressive strength (MPa) | Compressive modulus (MPa) |
|---|---|---|---|---|---|
| Polyurethane A1 (PUA1) | 2/1 | BDO/HMDI/BDO | 75 ± 7 | 0.58 ± 0.05 | 0.82 ± 0.06 |
| Polyurethane A2 (PUA2) | 4/1 | BDO/HMDI/BDO | 73 ± 6 | 0.71 ± 0.05 | 1.17 ± 0.07 |
| Polyurethane A3 (PUA3) | 6/1 | BDO/HMDI/BDO | 71 ± 7 | 0.93 ± 0.08 | 1.23 ± 0.11 |
Abbreviations: HMDI, hexamethylenediisocyanate; BDO, 1,4-butanediol.
