Issue 28, 2017

Raman scattering from single WS2 nanotubes in stretched PVDF electrospun fibers

Abstract

Inorganic WS2 nanotubes (INT-WS2) were embedded into sub-μm polyvinylidene fluoride-co-hexafluropropylene (PVDF–HFP) electrospun fibers. In this report we explore the Raman scattering spectroscopy from a single nanotube during stretching of individual nanocomposite fibers. Red shifts of up to ∼4.7 cm−1 for A1g and E12g WS2 bands were found before reaching the “tearing point” of the fibers. These shifts may correlate with up to ∼2.8% of the WS2 nanotube elongation. Moreover, the absence of the A1g and E12g bands' broadening, as well as the nonappearance of the E22g shear mode in the nanotube Raman spectra, suggest the stretching of the nanotubes as a whole (including inner layers). These results point to the excellent adhesion of the nanotubes' surface to the polymer and to the effective load transfer from the polymer to the WS2 nanotube. In order to elucidate the nature of interaction between the polymer and the nanofiller, we modeled the deformation of composite fibers using an elastic lattice spring model (LSM). The results of the model are fully consistent with our interpretation.

Graphical abstract: Raman scattering from single WS2 nanotubes in stretched PVDF electrospun fibers

Supplementary files

Article information

Article type
Paper
Submitted
11 Feb 2017
Accepted
14 Jun 2017
First published
14 Jun 2017

Phys. Chem. Chem. Phys., 2017,19, 18443-18451

Raman scattering from single WS2 nanotubes in stretched PVDF electrospun fibers

O. Grinberg, S. Deng, E. Zussman, T. Livneh and A. Zak, Phys. Chem. Chem. Phys., 2017, 19, 18443 DOI: 10.1039/C7CP00934H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements