Table 5.

The kinetic of curcumin release from p(NiPMAm/NiPAm) hydrogels.

Kinetic Model	Parameter	Sample 10/90/2	Sample 10/90/3
Higuchi 𝐹 = 𝑘𝐻∙𝑡1/2	kH	9.218	3.350
	R2	−0.918	−1.147
	AIC	97.98	74.811
Korsmeyer–Peppas 𝐹 = 𝑘𝐾𝑃∙𝑡𝑛	kKP	33.247	12.499
	n	0.074	0.063
	R2	0.984	0.996
	AIC	41.036	−2.927
Baker–Lonsdale 3/2[1−(1−𝐹/100)2/3]−𝐹/100 =𝑘 𝐵𝐿∙𝑡	kBL	0.002	0
	R2	−0.636	−1.054
	AIC	96.078	74.27

k_H: the constant of release at Higuchi model; R²: coefficient of determination; AIC: Akaik’s information criterion; F: the fraction of released drug in function of time t; k_KP: the constant of release at Korsmeyer-Peppes model that takes into account structural and geometrical characteristics of dosage form; n: the exponent of release/diffusion; k_BL: combined constant of release at Baker-Lonsdale model; [60,61,62].