Preparation and Characterization of Nanoporous Sodium Carboxymethyl Cellulose Hydrogel Beads

Figure 4

The surface SEM images of (3 μm) (a) dried hydrogel, (b) swollen NaCMC-1 hydrogel, (c) swollen NaCMC-4 hydrogel, (d) swollen NaCMC-5 hydrogel, and (e) swollen NaCMC-8 hydrogel.

(a)

(b)

(c)

(d)

(e)