Rapid Synthesis of Superabsorbent Smart-Swelling Bacterial Cellulose/Acrylamide-Based Hydrogels for Drug Delivery

Figure 4

Scanning electron micrograph of (a) PAM, (b) DH, (c) SH_6:4, and (d) SH_8:4.

(a)

(b)

(c)

(d)