Figure 3.

Theoretical Swelling of Anionic Hydrogel with Varying Crosslinking Density. Swelling profiles obtained by solution of Brannon-Peppas equation for varying values of $\overline{M_c}$: (1) $\overline{M_c}=2000$; (2) $\overline{M_c}=4000$; (3) $\overline{M_c}=6000$; (4) $\overline{M_c}=8000$; (5) $\overline{M_c}=10,000$; (6) $\overline{M_c}=12,000$; and (7) $\overline{M_c}=15,000$. Reprinted from Brannon-Peppas and Peppas[43] with permission from Elsevier.