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Journal of Materials Science

, Volume 44, Issue 14, pp 3682–3686 | Cite as

Physical, optical, and electrical properties of a new conducting polymer

  • Mahnaz M. Abdi
  • Anuar KassimEmail author
  • H. N. M. Ekramul Mahmud
  • Wan Mahmood Mat Yunus
  • Zainal Abidin Talib
  • Amir R. Sadrolhosseini
Article

Abstract

This work studies the electrical and optical properties of the conducting polymer composite films of polypyrrole–chitosan (PPy–CHI). The surface plasmon resonance (SPR) technique was used to study the optical properties of PPy and PPy–CHI composite films. Then, the values of the real and imaginary parts of the refractive indexes of PPy and PPy–CHI films were obtained by nonlinear least square fitting using Fresnel equations for a three-layer system of SPR system. The electrical conductivity measurements showed that the conductivity of the electrochemical prepared films improved in the presence of CHI and can be controlled by varying the CHI amount in the composite. The thermal diffusivity of the PPy–CHI composite films was measured by open photoacoustic spectroscopy and it has been shown that the thermal diffusivity is related to the electron migration in the conjugation chain length. The increase in electromagnetic interference shielding effectiveness (EMI SE) with the increase in electrical conductivity of the films is mostly from shielding by reflection rather than absorption.

Keywords

Chitosan Surface Plasmon Resonance Thermal Diffusivity Composite Film Shield Effectiveness 

Notes

Acknowledgements

The authors would like to thank the Department of Chemistry and University Putra Malaysia for their financial support. We also thank Dr. Zulkifly Abbas and Mr Hassan Soleimani for their assistance.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Mahnaz M. Abdi
    • 1
  • Anuar Kassim
    • 1
    Email author
  • H. N. M. Ekramul Mahmud
    • 2
  • Wan Mahmood Mat Yunus
    • 3
  • Zainal Abidin Talib
    • 3
  • Amir R. Sadrolhosseini
    • 3
  1. 1.Department of Chemistry, Faculty of ScienceUniversiti Putra MalaysiaSerdangMalaysia
  2. 2.Faculty of Chemical EngineeringUniversiti Teknologi MARAShah AlamMalaysia
  3. 3.Department of Physics, Faculty of ScienceUniversiti Putra MalaysiaSerdangMalaysia

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