Table III.

Drug Release Kinetics of AZT from the Films

Code	Zero-order		First-order		Higuchi		Korsmeyer–Peppas
	r 2	k 0	r 2	k 1	r 2	k H	r 2	n
F1	0.724	0.115	0.817	0.0020	0.861	2.41	0.984	0.476
F2	0.727	0.088	0.798	0.0013	0.897	1.79	0.946	0.350
F3	0.763	0.095	0.818	0.0014	0.816	2.19	0.905	0.473
F4	0.857	0.096	0.901	0.0014	0.920	2.52	0.922	0.687
F5	0.950	0.033	0.950	0.0004	0.975	0.98	0.974	1.017
F6	0.706	0.068	0.733	0.0012	0.819	2.22	0.889	0.422
F7	0.735	0.049	0.758	0.0007	0.846	1.58	0.886	0.398

r ² indicates determination coefficient; k ₀, k ₁, k _H are kinetic constants, and n is diffusional exponent indicative of the mechanism of drug release