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The reduced erosion front width (D/k)1/2 of various polymers.
| Polymers | kr (1/s) | D (cm2/s) | (D/k)1/2 | (D k)1/2 |
|---|---|---|---|---|
| poly(anhydride) | 2E-03 | 1E-08 | 20 μm | 4 mm/day |
| poly(ortho ester) | 5E-05 | 1E-08 | 140 μm | 1 mm/day |
| poly(α-hydroxy ester) | 7E-09 | 1E-07 | 40 mm | 7 μm/day |
| poly(amide) | 3E-13 | 1E-08 | 2 m | 50 nm/day |
