ESR investigations on polyethylene-single wall carbon nanotube composites

Mircea Chipara, K. Lozano, Richard Wilkins, E. V. Barrera, M. X. Pulikkathara, Laura Penia-Para, Magdalena Chipara

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14 Citations (Scopus)


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. © 2007 Springer Science+Business Media, LLC.
Original languageEnglish
Pages (from-to)1228-1233
Number of pages6
JournalJournal of Materials Science
Publication statusPublished - 1 Feb 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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