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首页> 外文期刊>Journal of Applied Polymer Science >High-efficiency preparation of polypropylene nanofiber by melt differential centrifugal electrospinning
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High-efficiency preparation of polypropylene nanofiber by melt differential centrifugal electrospinning

机译：熔融差动离心静电纺丝高效制备聚丙烯纳米纤维

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Melt differential centrifugal electrospinning (MDCE) method is proposed by integrating the advantages of centrifugal spinning and melt differential electrospinning, including high efficiency, solvent-free, multiple jets formation from nozzle-less spinning system, and small diameter. A mathematical model of jet diameter in MDCE is established. An orthogonal experiment is carried out to explore the effects of main processing parameters on the average diameter and the diameter standard deviation of the prepared fibers. Ultimately, polypropylene (PP) nanofibers with an average diameter of 790 nm are successfully prepared in a higher flow rate of 124.26 g h(-1) than that of other methods. The X-ray diffraction and differential scanning calorimeter indicate that the introduction of high-voltage electrostatic field in centrifugal spinning contribute to the crystal orientation of the PP molecular chain. Therefore, tensile mechanical strength is enhanced as the increase of the loading voltage. MDCE may provide an efficient and eco-friendly method for nanofiber manufacturing in the future. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48299.
机译：通过将离心纺丝和熔体差动静电纺丝的优点集成，包括从喷嘴的纺纱系统和小直径形成的高效率，无溶剂，无液喷射形成，提出了熔融差分离心静电纺丝（MDCE）方法。建立了MDCE中喷射直径的数学模型。进行正交实验以探讨主要加工参数对制备纤维的平均直径和直径标准偏差的影响。最终，成功地制备平均直径为790nm的聚丙烯（PP）纳米纤维，其比其他方法的流速更高。 X射线衍射和差示扫描量热计表明，在离心纺丝中引入高压静电场有助于PP分子链的晶体取向。因此，随着负载电压的增加，拉伸机械强度增强。 MDCE可以在未来提供一种高效且生态友好的纳米纤维制造方法。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2020,137,48299。

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