Table III.

Drug Release Kinetics and Mechanism from Matrix Tablets

Formulation	R 2			n	Weibull equation (b)
	Zero order	First order	Higuchi model
F1	0.8396	0.8812	0.9742	0.37	0.39
F2	0.8053	0.8583	0.9633	0.33	0.36
F3	0.8662	0.9634	0.9896	0.41	0.55
F4	0.8481	0.9426	0.9839	0.43	0.57
F5	0.8517	0.8774	0.9787	0.36	0.37
F6	0.8543	0.8771	0.9780	0.36	0.40
F7	0.7186	0.9130	0.9371	0.45	0.70
F8	0.6102	0.7911	0.8453	0.35	0.69
F9	0.5900	0.8755	0.8411	0.24	0.60
F10	0.5371	0.8305	0.7906	0.24	0.68
F11	0.8254	0.9669	0.9755	0.37	0.53
F12	0.7864	0.9582	0.9691	0.35	0.58
F13	0.8420	0.9682	0.9774	0.32	0.56
F14	0.8440	0.9810	0.9830	0.38	0.56
F15	0.8361	0.9577	0.9806	0.39	0.55
F16	0.8680	0.9842	0.9896	0.40	0.59
F17	0.8353	0.9701	0.9782	0.38	0.61
F18	0.7859	0.9569	0.9598	0.40	0.62

All formulations were prepared by hot-fusion method