Silver/Copper Nanoparticle-Modified Polymer Chitosan/PVA Blend Fibers

Figure 6

SEM images and average fiber distribution of the 30/70 CS/PVA blend at different voltages of (a) 15 kV, (b) 20 kV, and (c) 25 kV with a spinning distance of 15 cm.

(a)

(b)

(c)

(d)