ESR investigations on polyethylene-single wall carbon nanotube composites

Authors

Mircea Chipara, The University of Texas Rio Grande ValleyFollow
Karen Lozano, The University of Texas Rio Grande ValleyFollow
Richard Wilkins
Enrique V. Barrera
M. X. Pulikkathara
Laura Penia-Para
Dorina M. Chipara, The University of Texas Rio Grande ValleyFollow

Document Type

Article

Publication Date

12-4-2007

Abstract

Electron spin resonance investigations on single wall carbon nanotubes dispersed in polyethylene are reported. Three resonance lines were observed; a wide line assigned to magnetic iron clusters (catalyst residues), a broad and intense line originating from uncoupled electrons delocalized over the conducting domains of carbon nanotubes (in interaction with the electronic spins assigned to magnetic impurities), and a faint line superimposed on the broad one, assigned to paramagnetic impurities. The temperature dependence of resonance line parameters (resonance line position, width, and double integral) in the range 150–450 K has been analyzed. It was observed that the parameters of the broad and narrow lines are sensitive to the glass and melting relaxations occurring within the polymeric matrix.

Comments

Copyright © 2007, Springer Science Business Media, LLC

https://rdcu.be/cQuWw

Recommended Citation

Chipara, M., Lozano, K., Wilkins, R. et al. ESR investigations on polyethylene-single wall carbon nanotube composites. J Mater Sci 43, 1228–1233 (2008). https://doi.org/10.1007/s10853-007-2264-8

Publication Title

Journal of Materials Science

DOI

10.1007/s10853-007-2264-8