Flat polymer ribbons and other shapes by electrospinning
Flat polymer ribbons and other shapes by electrospinning
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DOI：
10.1002/polb.10015
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发表时间：
2001-11-01
影响因子：
--
通讯作者：
Reneker, DH
中科院分区：
文献类型：
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作者：
Koombhongse, S;Liu, WX;Reneker, DH
除了圆形纳米纤维之外，静电纺丝聚合物溶液可以产生具有各种横截面形状的细纤维。观察到分支纤维、扁平带状物、具有其他形状的带状物以及从较大纤维纵向分裂的纤维。这些不对称纤维的横向尺寸通常为1或2 μ m，在最宽方向上测量。的相关性的分支和珠，观察到的高帧速率的带电射流的聚合物溶液的带状物和分支纤维的生产，表明这些现象发生在尺度范围从大约1毫米到1妈妈。对来自许多不同种类的聚合物和溶剂的具有这些横截面形状的纤维的观察表明，流体机械效应、射流携带的电荷以及溶剂的蒸发都有助于纤维的形成。皮肤对聚合物溶液射流的影响解释了许多观察结果。观察到的形状可以用作指导的数学或计算机生成的模型的电纺丝过程的扩展。(C)John Wiley & Sons，Inc.
In addition to round nanofibers, electrospinning a polymer solution can produce thin fibers with a variety of cross-sectional shapes. Branched fibers, flat ribbons, ribbons with other shapes, and fibers that were split longitudinally from larger fibers were observed. The transverse dimensions of these asymmetric fibers were typically 1 or 2 mum, measured in the widest direction. A correlation of the branches and beads, observed in high-frame-rate videography of the electrified jets of polymer solutions from which the ribbons and branched fibers were produced, suggest that these phenomena occur at scales ranging from around I mm to I mum. The observation of fibers with these cross-sectional shapes from a number of different kinds of polymers and solvents indicates that fluid mechanical effects, electrical charge carried with the jet, and evaporation of the solvent all contributed to the formation of the fibers. The influence of a skin on the jets of polymer solutions accounts for a number of the observations. The observed shapes can be used as guides for the extension of mathematical or computer-generated models for the electrospinning process. (C) 2001 John Wiley & Sons, Inc.