When the experimental data were fitted using a bi-exponential
function as in ref. [22] with y(t)=y0+A1e−t/τ
1+A2e−t/τ
2, where y(t)Upon integrating the curve until 300 h, the total amount of MET
released by the membrane in the 200 mL aqueous solution was
10.63 mg (53.15%).