Needleless Melt-Electrospinning of Polypropylene Nanofibres

Figure 7

SEM images of the fibres electrospun from PP melt containing (a) 0.5%, (b) 2%, (c) 3%, and (d) 4% DTAB (applied voltage = 65 kV, collecting distance = 16 cm).

(a)

(b)

(c)

(d)