Melt blown nanofibers: Fiber diameter distributions and onset of fiber breakup
Melt blown nanofibers: Fiber diameter distributions and onset of fiber breakup
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DOI：
10.1016/j.polymer.2007.04.005
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发表时间：
2007-05-21
期刊：
影响因子：
4.6
通讯作者：
Bates, Frank S.
中科院分区：
文献类型：
--
作者：
Ellison, Christopher J.;Phatak, Alhad;Bates, Frank S.
平均直径小于500 nm的聚（对苯二甲酸丁二醇酯）、聚丙烯和聚苯乙烯纳米纤维已通过单孔熔喷装置使用商业上可行的加工条件生产。这一结果是缩小熔喷技术和静电纺丝在生产纳米级纤维能力方面的差距的重要一步。此外，纤维直径分布的分析表明，无论平均纤维直径如何，它们都很好地由对数正态分布函数描述，这表明即使在生产纳米纤维时，也保留了潜在的纤维衰减机制。然而，具有不同平均纤维直径的垫之间的分布宽度的比较表明，宽度与平均纤维直径的依赖性不是普遍的（即，它是材料依赖的）。最后，在某些加工条件下，我们观察到纤维断裂，我们认为这是由表面张力驱动的，这些不稳定性可能代表了该过程潜在的基本限制的开始。爱思唯尔有限公司出版
Poly(butylene terephthalate), polypropylene, and polystyrene nanofibers with average diameters less than 500 nm have been produced by a single orifice melt blowing apparatus using commercially viable processing conditions. This result is a major step towards closing the gap between melt blowing technology and electrospinning in terms of the ability to produce nano-scale fibers. Furthermore, analysis of fiber diameter distributions reveals they are well described by a log-normal distribution function regardless of average fiber diameter, indicating that the underlying fiber attenuation mechanisms are retained even when producing nanofibers. However, a comparison of the breadth of the distributions between mats with differing average fiber diameters indicates that the dependence of the breadth with average fiber diameter is not universal (i.e., it is material dependent). Finally, under certain processing conditions, we observe fiber breakup that we believe is driven by surface tension and these instabilities may represent the onset of an underlying fundamental limit to the process. Published by Elsevier Ltd.