Intestine-Specific, Oral Delivery of Captopril/Montmorillonite: Formulation and Release Kinetics

Table 3 Parameters for CP release at pH 1.2

pH 1.2	Zero order	First order	Higuchi	Koresmeyer–Peppas
	R²	R²	R²	R²	n
Solution	0.963	0.964	0.977	0.950	0.255
Melt	0.984	0.955	0.973	0.956	0.391
Grind	0.859	0.849	0.842	0.840	0.091