Anisotropy Influences on the Drug Delivery Mechanisms by Means of Joint Invariant Functions

Table 1

Plane sections through 3D plot, for different values of system nonlinearity , can be linked to experimental drug release kinetics, that is, for different drug release mechanisms [7].

Plane sections	Experimental drug release kinetics	Release phase/drug release mechanism
		Burst effect phase/diffusion due to concentration gradient [7, 8, 28–43]
		Swelling phase + equilibrium phase/drug diffusion and polymer relaxation [7, 8, 28, 30, 38, 39]
		Polymer degradation phase/drug and polymer degradation, physical and chemical interactions between the resulting fragments [7, 8]