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Water content at equilibrium and the apparent Young’s modulus of the pure homo-polymers and the PHEMMAC copolymer specimens with different compositions.
| System | EWC (wt %) | Elastic Modulus (kPa) |
|---|---|---|
| PHEMA | 43.2 ± 0.2 | 17 ± 4 |
| PHEMMA-10 | 32.0 ± 0.2 | 123 ± 12 |
| PHEMMA-20 | 21.4 ± 0.3 | 317 ± 11 |
| PHEMMA-30 | 13.7 ± 0.4 | 782 ± 25 |
| PHEMMA-40 | 8.3 ± 0.5 | 1880 ± 25 |
| PHEMMA-50 | 5.5 ± 0.5 | 25,058 ± 32 |
| PMMA | 1.3 ± 0.5 | 32,000 ± 43 |
