475280.fig.003a
(a)
475280.fig.003b
(b)
475280.fig.003c
(c)
Figure 3: SEM images of PLGA (16%)/chitosan (4%)/PVA (8%) nanofibrous mats prepared using various voltages of (a) 8 kV, (b) 12 kV, and (c) 16 kV (feed rate = 0.25 mL/h, tip to collector distance = 15 cm).