Micro- and nanostructured surface morphology on electrospun polymer fibers
Micro- and nanostructured surface morphology on electrospun polymer fibers
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DOI：
10.1021/ma020444a
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发表时间：
2002-10-22
期刊：
影响因子：
5.5
通讯作者：
Rabolt, JF
中科院分区：
文献类型：
--
作者：
Megelski, S;Stephens, JS;Rabolt, JF
采用多种溶剂制备静电纺丝纤维，考察聚合物/溶剂性质对纤维表面形貌的影响。静电纺丝是一种新的加工技术，用于生产直径在几纳米到几十微米范围内的纤维。通过引入微纳米结构的表面结构，我们已经能够生产出具有高表面积的聚合物纤维，我们称之为“多孔”形态。这些特性可以被引入到几种不同的聚合物纤维中，大大增加了它们的应用范围。这些孔隙从直径在20-350纳米之间的密集排列、结构良好的纳米孔到直径约为1微米的较大的扁平孔不等。高分子纤维表面积的增加与静电纺丝过程中使用的高挥发性溶剂有关。利用光学显微镜、场发射扫描电镜（FESEM）、透射电镜（TEM）和原子力显微镜（AFM）研究了工艺参数对纤维表面形貌的影响。
Electrospun fibers were produced using a variety of solvents to investigate the influence of polymer/solvent properties on the fiber surface morphology. Electrospinning is a novel processing technique for the production of fibers with diameters in the range of a few nanometers to tens of micrometers. We have been able to produce polymeric fibers with a high surface area through the introduction of a micro- and nanostructured surface structure, which we refer to as a "porous" morphology. These features could be introduced in several different polymeric fibers increasing their range of application significantly. The pores vary from densely packed, well-formed nanopores with diameters in the range 20-350 nm to larger flat pores,of about 1 mum. The increased surface area of polymeric fibers was correlated with high volatility solvents used in the electrospinning process. The effect of processing parameters on the fiber surface morphology was also investigated using optical microscopy, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM).