Electric field induced orientation of polymer chains in macroscopically aligned electrospun polymer nanofibers
Electric field induced orientation of polymer chains in macroscopically aligned electrospun polymer nanofibers
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DOI：
10.1021/ja065043f
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发表时间：
2007-03-14
影响因子：
15
通讯作者：
Rabolt, John F.
中科院分区：
文献类型：
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作者：
Kakade, Meghana V.;Givens, Steven;Rabolt, John F.
这项工作的结果首次表明，用于宏观对准聚合物纳米纤维的电场也可以平行于纤维轴对准聚合物链。这一重要结果表明，各向异性结构特性(机械、电气等)在电纺过程中可以在聚合物纳米纤维中诱导。这种单轴取向的纳米纤维在生物医学、微电子学和光学方面显示出各种潜在的应用。利用一种简单的垂直静电纺丝技术，在电场诱导下，静态收集聚合物纳米纤维中的分子取向。本文描述了静电纺丝的取向过程，并使用三种独立的方法：偏振傅里叶变换红外光谱、偏振拉曼散射和X射线衍射法验证了聚合物纳米纤维中的这种分子取向。
The results presented in this work show for the first time that an electric field used to macroscopically align polymer nanofibers can also align polymer chains parallel to the fiber axis. This important result indicates that anisotropic structural properties (mechanical, electrical, etc.) can be induced in polymer nanofibers during the electrospinning process. Such uniaxially oriented nanofibers exhibit a variety of potential applications in biomedicine, microelectronics, and optics. A simple technique of vertical electrospinning with an electric field induced, stationary collection was employed to obtain the molecular orientation in polymer nanofibers. This manuscript describes the orientation process via electrospinning and verifies this molecular orientation in the polymer nanofibers using three independent methods: polarized Fourier transform infrared spectroscopy, polarized Raman scattering, and X-ray diffraction.