Table 2.

Kinetics release models used to describe the release of Ude-Phe from hydrogel 2 through different membranes.

Membrane type	Zero order	First order	Higuchi model	Korsmeyer–Peppas model
	Regression coefficient				n
Nitrocellulose	0.683	0.776	0.824	0.990	0.20
Cellulose acetate	0.993	0.990	0.991	0.997	0.63
Cuprophan	0.979	0.995	0.999	0.997	0.47
Strat-M	0.996	0.996	0.972	0.984	0.94