Table 3.

Correlation coefficient (R²) and rate constants (k) obtained by fitting the data of the release kinetics of isoniazid from nanocomposites-A and -B into PBS solutions at pH 4.8 and 7.4

Samples	pH	Release (%)	R2			Pseudo-second order
			Pseudo-first order	Pseudo-second order	Parabolic diffusion model	Rate constant k (mg/min)
Nanocomposite-A	4.8	96	0.9187	0.9962	0.7648	2.77×10−5
Nanocomposite-A	7.4	92	0.8771	0.9962	0.7054	2.68×10−5
Nanocomposite-B	4.8	95	0.9017	0.9982	0.6226	9.23×10−5
Nanocomposite-B	7.4	80	0.9032	0.9988	0.6713	6.98×10−5

Abbreviation: PBS, phosphate-buffered saline.