Table 2.

Characterization of drug release from the polymer carriers.

Polymeric	Diffusional Impact				Kinetic Impact
Carriers Loaded with SVN	Radius of Carrier, [cm]	∆(Gt/G∞)/∆t0.5 [s−0.5] a	Drug Diffusivity (D’), [cm2/s]	R-Square, Origin®	kG × 106 [s−1]	R-Square, Origin®
PHB-micro-beads	0.0125	0.196	8.72 × 10−10	0.994	3.75	0.964
PVA cryogel	0.563	0.148	2.69 × 10−6	0.985	5.63	0.998
PVA/PHB composite	0.563	0.203	5.05 × 10−6	0.997	2.29	0.968

^a G_t and G_∞ are the cumulative weight content of the SVN free fraction released at a time t and t → ∞, respectively, in accordance with diffusion mechanism.