Influence of Fe₃O₄ Nanoparticles on the Preparation of Aligned PLGA Electrospun Fibers Induced by Magnetic Field

Figure 4

SEM photographs of aligned nanofibers fabricated via magnetic electrospinning (MES) with ((a), (c), (e), and (g)) and without Fe₃O₄ nanoparticles ((b), (d), (f), and (h)) at the flow rate of 0.5 mL/h and the voltage of ((a), (b)) (13.5 kV); ((c), (d)) (15.5 kV); ((e), (f)) (17.5 kV); ((g), (h)) (19.5 kV). FFT was used to analyze the alignment of fibers in (g) and (h), respectively, as shown in the inserts.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)