341897.fig.007a
(a)
341897.fig.007b
(b)
341897.fig.007c
(c)
341897.fig.007d
(d)
Figure 7: AFM images of pure PVA and its composites with different nanoclay loadings: (a) pure PVA, (b) 1% nanoclay, (c) 2% nanoclay, and (d) 4% nanoclay.