Property Evaluation of Bletilla striata/Polyvinyl Alcohol Nano Fibers and Composite Dressings

Figure 4

SEM images (×5000) of nano fibers made of PVA/BS solution with volume ratios of (a) pure PVA, (b) 9 : 1, (c) 8 : 2, (d) 7 : 3, (e) 6 : 4, and (f) 5 : 5, by electrospinning. Scale bar: 10 μm.

(a)

(b)

(c)

(d)

(e)

(f)