title: Electric field induced orientation of polymer chains in macroscopically aligned electrospun polymer nanofibers.
abstract: 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.
authors.affiliation: Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA.
authors.forename: Meghana V
authors.initials: MV
authors.lastname: Kakade
authors.forename: Steven
authors.initials: S
authors.lastname: Givens
authors.forename: Kenncorwin
authors.initials: K
authors.lastname: Gardner
authors.forename: Keun Hyung
authors.initials: KH
authors.lastname: Lee
authors.forename: D Bruce
authors.initials: DB
authors.lastname: Chase
authors.forename: John F
authors.initials: JF
authors.lastname: Rabolt