Investigation on Synthesis of Hydrogel Starting from Vietnamese Pineapple Leaf Waste-Derived Carboxymethylcellulose

Figure 9

SEM images with 50x magnification of SAP (a) and BioSAP. (b) Scale bars represent 1 mm (magnification = 50x). It can be seen from Figure 9 that, in the presence of CMC, the hydrogel material has many pores.

(a)

(b)