Functionalization of Cellulose Fibres with Oxygen Plasma and ZnO Nanoparticles for Achieving UV Protective Properties

Figure 6

SEM images of (a) untreated cotton samples functionalized with ZnO nanoparticles and cotton samples that were treated with oxygen plasma for (b) 10 s, (c) 20 s, and (d) 30 s and functionalized with ZnO nanoparticles.

(a)

(b)

(c)

(d)