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SEM images of surface topography changes with CNC contents (a,a’) 0 wt% cellulose nanocrystal contents; (b,b’) 0.3 wt% cellulose nanocrystal contents; (c,c’) 0.7 wt% cellulose nanocrystal contents; (d,d’) 1.0 wt% cellulose nanocrystal contents.
