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Electron spin resonance on carbon nanotubes–polymer composites

  1. Mircea Chipara1,*,
  2. Jeffrey M. Zaleski1,
  3. David Hui2,
  4. Chunsheng Du3,
  5. Ning Pan3

Article first published online: 20 OCT 2005

DOI: 10.1002/polb.20647

Issue

Journal of Polymer Science Part B: Polymer Physics

Journal of Polymer Science Part B: Polymer Physics

Special Issue: The American Physical Society Division of Polymer Physics Special Issue

Volume 43, Issue 23, pages 3406–3412, 1 December 2005

Additional Information

How to Cite

Chipara, M., Zaleski, J. M., Hui, D., Du, C. and Pan, N. (2005), Electron spin resonance on carbon nanotubes–polymer composites. J. Polym. Sci. B Polym. Phys., 43: 3406–3412. doi: 10.1002/polb.20647

Author Information

  1. 1

    Indiana University, Department of Chemistry, Bloomington, Indiana

  2. 2

    Department of Mechanical Engineering, University of New Orleans, New Orleans, Louisiana

  3. 3

    Nanomaterials in the Environment, Agriculture and Technology (NEAT), University of California, Davis, California

*Indiana University, Department of Chemistry, Bloomington, Indiana

Publication History

  1. Issue published online: 20 OCT 2005
  2. Article first published online: 20 OCT 2005
  3. Manuscript Accepted: 18 AUG 2005
  4. Manuscript Revised: 12 JUL 2005
  5. Manuscript Received: 1 MAY 2005

Funded by

  • US Army STTR. Grant Number: A2-1299
  • UC Discover. Grant Number: 10,175

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Keywords:

  • block copolymers;
  • carbon nanotube;
  • composites;
  • electron spin resonance (ESR);
  • nanocomposites;
  • polymer;
  • styrene–isoprene–styrene

Abstract

Electron spin resonance investigations on styrene–polyisoprene–polystyrene block copolymer loaded with various amounts of multiwalled carbon nanotubes are reported. The temperature dependence of resonance line parameters in the range 290–425 K was analyzed. It was proved that the main resonance line represents a bottleneck of localized and delocalized electrons residing on carbon nanotubes. The temperature dependence of the g-factor and double integral of resonance spectra confirmed this interpretation. The temperature dependence of the resonance linewidth of composites containing various concentrations of nanotubes was explained by the thermally activated narrowing of the resonance spectra. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 3406–3412, 2005

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