Abstract The diversity of nanofibre properties is caused not only by their chemical composition but also by the way of their preparation. In this study, we examine nanofibre properties resulting from five different electrospinning methods when using polyurethane or polyvinyl butyral. The five electrospinning methods examined were based on (a) alternating current ( AC electrospinning) and (b) direct current (Rod electrospinning, Nanospider™ technology, Needle electrospinning, Centrifugal electrospinning). The results, based mainly on the evaluation of images from scanning electron and confocal microscopy, showed clear structural differences between the nanomaterials produced by the various methods. The fibres obtained by the AC method were predominantly fine and disordered with high porosity. In the case of DC methods, which are characterized by a significant difference in productivity, the nanofibers of an accurately defined thickness (Nanospider technology) or very oriented nanofibres with considerable surface roughness (centrifugal spinning) could be prepared. By selecting a suitable method, it should be possible to prepare required nanofibre structures (larger/smaller pore size, specific fibre diameters, etc.) for specific biological applications, sensors, filtration, cosmetic products, drug delivery systems etc.

中文翻译：

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静电纺丝方法对生物应用必不可少的聚乙烯醇缩丁醛和聚氨酯纳米纤维特性的影响

摘要 纳米纤维性能的多样性不仅取决于它们的化学成分，还取决于它们的制备方式。在这项研究中，我们检查了使用聚氨酯或聚乙烯醇缩丁醛时由五种不同的静电纺丝方法产生的纳米纤维特性。所检查的五种静电纺丝方法基于 (a) 交流电（AC 静电纺丝）和（b）直流电（棒状静电纺丝、Nanospider™ 技术、针状静电纺丝、离心式静电纺丝）。结果，主要基于对扫描电子和共聚焦显微镜图像的评估，表明通过各种方法生产的纳米材料之间存在明显的结构差异。通过 AC 方法获得的纤维主要是细小和无序的，具有高孔隙率。在 DC 方法的情况下，其特征在于生产率的显着差异，可以制备精确定义厚度的纳米纤维（纳米蜘蛛技术）或具有相当大表面粗糙度的定向纳米纤维（离心纺丝）。通过选择合适的方法，应该可以为特定的生物应用、传感器、过滤、化妆品、药物输送系统等制备所需的纳米纤维结构（更大/更小孔径、特定纤维直径等）。