Table 2.

Estimated parameters and drug release mechanism of nifedipine loaded CS/ALG nanoparticles

pH	n	k×102	r	Drug transport mechanism
1.5	-0.1295	0.3720	0.8463	Fickian diffusion
6.8	0.213	0.4495	0.6961	Fickian diffusion
7.4	0.4183	0.1879	0.9584	Fickian diffusion

k, Kinetic constants; n, Diffusional exponents; r, Correlation coefficient.