Abstract：Sawtooth-guidance type needleless melt electrospinning has been proposed as a way to improve the non-uniformity of melt electrospinning fibers. The new method was first compared with conventional melt electrospinning without sawtooth-guidance. The optimum spinning process parameters for sawtooth-guidance type needleless melt electrospinning were then determined by orthogonal experiments on self-regulating equipment. The experiments demonstrated that sawtooth-guidance type needleless melt electrospinning improves the uniformity of fiber diameter and the most appropriate spinning process parameters are as follows:a spinning temperature of 240℃, a pressure of 65 kV and a distance of 105 mm, with the mass flow rate as a constant. Moreover, Taylor-cones are distributed at the sawtooth tips, and the average minimum fiber diameter was 820 nm.
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2017, Vol. 44 
