Table 2: Kinetic parameters and correlation coefficients specific to power law model, correlation coefficients specific to Higuchi and zero-order models, and drug release percentage.

Collagen-piroxicam matrices (% of piroxicam)Kinetic constant (1/minn)Release exponentCorrelation coefficientDrug release percentage (%)
Power law modelHiguchi modelZero-order model

10.110.390.98110.97160.876187.44
1.50.120.380.98600.97550.882296.24
20.100.410.98920.98310.900991.33