Synthesis and Characterization of a Novel Bentonite Composite Superabsorbent Resin Based on Starch

Figure 5

SEM images of (a) bentonite, (b) potato starch, (c, d) SAR, (e) SAR after absorbing distilled water and (f) SAR after absorbing salt water. SAR, superabsorbent resin; SEM, scanning electron microscope.