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. 2021 Aug 10;13(16):2666. doi: 10.3390/polym13162666

Table 9.

Diffusion exponential and release mechanism of a material.

Diffusion Exponent (n) Mechanism
Film Cylinder Sphere
0.50 0.45 0.43 Fickian Diffusion
0.50 < n < 1.00 0.45 < n < 0.89 0.43 < n < 0.85 Anomalous Transport
1.00 0.89 0.85 Case-II Transport
>1.00 >0.89 >0.85 Supercase-II Transport