Molecular orientation in individual electrospun nanofibers measured via polarized Raman spectroscopy

被引：63

作者：

Bellan, Leon M. ^{[1
]}

Craighead, Harold G. ^{[1
]}

机构：

[1] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA

来源：

POLYMER | 2008年 / 49卷 / 13-14期

基金：

美国国家科学基金会;

关键词：

electrospinning; polarized Raman; orientation;

D O I：

10.1016/j.polymer.2008.04.061

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Using polarized Raman spectroscopy, we have recorded Raman spectra from individual electrospun Nylon-6 nanofibers. Analysis of these single-fiber spectra, compared to those of unoriented and oriented Nylon-6 films, indicates significant molecular orientation. Because electrospinning produces fibers in a jet with a large strain rate, this molecular orientation is expected. We present quantitative measurements of molecular orientation in a single nanofiber and compare these to those of film samples. Such measurements could yield information about the uniformity of the electrospinning process and resulting fibers, and may also allow comparison between spectrally measured orientation functions and single-fiber mechanical properties. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3125 / 3129

页数：5

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