Coil-based electrospinning is among the most efficient needleless electrospinning technologies. Conventional coil electrospinning typically uses a coil with a smooth wire surface as the spinneret. The effect of wire surface morphology on coil electrospinning and nanofiber production is scarcely reported. Herein, we report a novel coil electrospinning that has a secondary coil structure on the coil spinneret. The secondary coil was found to have a great effect on the coil electrospinning process. It reduced the voltage for jet initiation by 4 kV and increased the nanofiber production rate by over 170% but had little influence on fiber diameter. The finite element analysis indicated that the secondary coil structure increased the electric field intensity on the coil surface and fiber-generating areas. These novel understandings may be useful for designing high-efficiency electrospinning spinnerets for nanofiber mass production.

中文翻译：

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使用二级线圈结构增强线圈静电纺丝

基于线圈的静电纺丝是最有效的无针静电纺丝技术之一。常规的线圈静电纺丝通常使用具有光滑线表面的线圈作为喷丝头。几乎没有报道线表面形态对线圈静电纺丝和纳米纤维生产的影响。在此，我们报告了一种新颖的线圈静电纺丝，该线圈在线圈喷丝头上具有次级线圈结构。发现次级线圈对线圈静电纺丝过程有很大影响。它降低了射流引发的电压4 kV，并使纳米纤维的生产率提高了170％以上，但对纤维直径的影响很小。有限元分析表明，次级线圈结构增加了线圈表面和纤维产生区域的电场强度。