594734.fig.005a
(a)
594734.fig.005b
(b)
594734.fig.005c
(c)
594734.fig.005d
(d)
Figure 5: Microscopic surface images of CNF (top) and CNF/5% PF (bottom) films before (left) and after (right) being soaked in water for 5 min. The scale bars represent 200 μm.