pH of release medium | Fitting curve | Regression equation | R2 |
---|---|---|---|
7.4# | First-order equation | Mt = 89.14(1−e−0.12t) | 0.98184 |
6.5 | Zero-order equation | Mt = 1.55t + 26.01 | 0.79138 |
First-order equation | Mt = 84.78(1−e−0.11t) | 0.97805 | |
Higuchi equation | Mt = 13.29t0.5 + 4.79 | 0.93049 | |
5.5 | Zero-order equation | Mt = 0.89t + 19.99 | 0.68458 |
First-order equation | Mt = 51.59(1−e−0.15t) | 0.93788 | |
Higuchi equation | Mt = 7.74t0.5 + 7.43 | 0.83477 |