Table 3.
Diffusional exponent, n | Drug release mechanism | ||
---|---|---|---|
Thin film | Cylindrical sample | Spherical sample | |
0.5 | 0.45 | 0.43 | Fickian diffusion |
0.5<n<1.0 | 0.45<n<1.0 | 0.43<n<1.0 | Anomalous transport |
1.0 | 1.0 | 1.0 | Case II transport (Zero-order release) |