Table 2. Determination Coefficient Values for the Fitting Process of the Release Results with the Different Kinetic Models.

		determination coefficient (R2)
models	materials	pH 1.2	pH 7.4
zeroth-order model	DI	0.80	0.79
	CS/D	0.75	0.76
first-order model	DI	0.92	0.89
	CS/D	0.97	0.96
Higuchi model	DI	0.92	0.92
	CS/D	0.93	0.93
Hixson–Crowell model	DI	0.60	0.61
	CS/D	0.60	0.60
Korsmeyer–Peppas model	DI	0.94	0.95
	CS/D	0.94	0.94