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Drug release mechanism according to n value from Korsmeyer-Peppas model
| Release exponent (n) | Drug transport mechanism |
|---|---|
| n < 0.43 | Fickian release (diffusion-controlled release) |
| 0.43 < n < 0.85 | Non-Fickian release (anomalous transport, combination of diffusion and erosion drug release mechanism) |
| 0.85 < n < 1 | Case II transport (relaxation-controlled release) |
| n > 1 | Super case II transport (swelling and polymer chain relaxation controlled release) |
