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

doi:10.1007/s10853-007-2264-8

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

Resultado de la investigación › revisión exhaustiva

14 Citas (Scopus)

Resumen

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.

Idioma original	English
Páginas (desde-hasta)	1228-1233
Número de páginas	6
Publicación	Journal of Materials Science
DOI	https://doi.org/10.1007/s10853-007-2264-8
Estado	Published - 1 feb 2008
Publicado de forma externa	Sí

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1007/s10853-007-2264-8

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title = "ESR investigations on polyethylene-single wall carbon nanotube composites",

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. {\textcopyright} 2007 Springer Science+Business Media, LLC.",

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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

PY - 2008/2/1

Y1 - 2008/2/1

N2 - 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.

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

DO - 10.1007/s10853-007-2264-8

M3 - Article

SP - 1228

EP - 1233

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

ER -