160931.fig.002a
(a)
160931.fig.002b
(b)
160931.fig.002c
(c)
160931.fig.002d
(d)
Figure 2: SEM images of PVP nanocomposite fibers incorporated with the following wt% MWCNTs: (a) 0, (b) 0.5, (c) 1, and (d) 2. Electrospinning experiments conducted at 85 : 15 PVP and ethanol ratio, 25 kV DC voltage, 20 cm separation distance, and 2 mL/hr pump speed.