Swelling Resistance and Water-Induced Shape Memory Performances of Sisal Cellulose Nanofibers/Polyethylene Glycol/Citric Acid Nanocellulose Papers

Figure 7

SEM images of the fractured surface of the neat CNF/PEG paper (a). CNF/PEG/CA paper with the CA content of 20 wt.% (b) and 30 wt.% (c).

(a)

(b)

(c)