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

Research output: Contribution to journalArticle

13 Citations (Scopus)

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

Fingerprint

Carbon Nanotubes
Polyethylene
Paramagnetic resonance
Polyethylenes
Carbon nanotubes
Composite materials
Impurities
Melting
Iron
Glass
Catalysts
Electrons
Industry
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Chipara, M., Lozano, K., Wilkins, R., Barrera, E. V., Pulikkathara, M. X., Penia-Para, L., & Chipara, M. (2008). ESR investigations on polyethylene-single wall carbon nanotube composites. Journal of Materials Science, 1228-1233. https://doi.org/10.1007/s10853-007-2264-8
Chipara, Mircea ; Lozano, K. ; Wilkins, Richard ; Barrera, E. V. ; Pulikkathara, M. X. ; Penia-Para, Laura ; Chipara, Magdalena. / ESR investigations on polyethylene-single wall carbon nanotube composites. In: Journal of Materials Science. 2008 ; pp. 1228-1233.
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Chipara, M, Lozano, K, Wilkins, R, Barrera, EV, Pulikkathara, MX, Penia-Para, L & Chipara, M 2008, 'ESR investigations on polyethylene-single wall carbon nanotube composites', Journal of Materials Science, pp. 1228-1233. https://doi.org/10.1007/s10853-007-2264-8

ESR investigations on polyethylene-single wall carbon nanotube composites. / Chipara, Mircea; Lozano, K.; Wilkins, Richard; Barrera, E. V.; Pulikkathara, M. X.; Penia-Para, Laura; Chipara, Magdalena.

In: Journal of Materials Science, 01.02.2008, p. 1228-1233.

Research output: Contribution to journalArticle

TY - JOUR

T1 - ESR investigations on polyethylene-single wall carbon nanotube composites

AU - Chipara, Mircea

AU - Lozano, K.

AU - Wilkins, Richard

AU - Barrera, E. V.

AU - Pulikkathara, M. X.

AU - Penia-Para, Laura

AU - Chipara, Magdalena

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AB - 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.

U2 - 10.1007/s10853-007-2264-8

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JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

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