Figure 2

SEM images of evolution in the morphological structure of cellulose nanofibers after hot-pressing by 5 min (a), 10 min (b), 15 min (c) and 60 min (d).

SEM images of evolution in the morphological structure of cellulose nanofibers after hot-pressing by 5 min (a), 10 min (b), 15 min (c) and 60 min (d).