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Electrospinning has gained interests as a polymer processing technique for nanofiber fabrications. It is well known that both polymer solutions and polymer melts can be electrospun. Among them, melt electrospinning is envi- ronmentally friendly technique due to the absence of solvent. However, the diameter of melt-electrospun fibers is typ- ically thicker than solution-electrospun fibers. By using a home-made melt-electrospinning device, micron-sized fibers with smooth and even surfaces were electrospun successfully. We demonstrate that low-density polyethylene fibers can be reduced in diameter with a viscosity-reducing additive such as low molecular weight polyethylene monoalcohol and polyethylene wax. The diameter was further reduced by blending it with oxidized polyethylene wax due to polarity increment. Additionally, parameters affecting the diameter were analyzed such as an applied voltage and a spinning dis- tance.

Effects of Melt-viscosity of Polyethylene Mixtures on the Electrospun-fiber Diameter Using a Oil-circulating Melt-electrospinning Device