Ibuprofen Release from Poly(ethyl cyanoacrylate) Nanoparticles Prepared by Semicontinuous Heterophase Polymerization

Figure 7

Curve fitting to the release of ibuprofen from nanoparticles prepared at F.5/15/1.75 conditions: equations of (△) Higuchi, (○) Korsmeyer-Peppas, and (□) Hixson; the line represents Weibull equation and (●) the experimental data.