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In-situ synthesis and magnetic properties of polystyrene/polypyrrole nanocomposite materials with uniformly dispersed iron nanoparticles

Published online by Cambridge University Press:  01 February 2011

H. Srikanth ,
P. Poddar ,
J. L. Wilson ,
K. Mohomed  and
J. P. Harmon
H. Srikanth
Affiliation:
Materials Physics Laboratory, Department of Physics, University of South Florida, Tampa, FL
P. Poddar
Affiliation:
Materials Physics Laboratory, Department of Physics, University of South Florida, Tampa, FL
J. L. Wilson
Affiliation:
Materials Physics Laboratory, Department of Physics, University of South Florida, Tampa, FL
K. Mohomed
Affiliation:
Department of Chemistry, University of South Florida, Tampa, FL
J. P. Harmon
Affiliation:
Department of Chemistry, University of South Florida, Tampa, FL
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Abstract

Magnetic nanoparticles embedded in polymer matrices have excellent potential for electromagnetic device applications like EMI noise reduction. We have synthesized polystyrene (PS) and polypyrrole (PPy) composites by controllably dispersing bare and PS-coated Fe nanoparticles. These nanocomposites were processed as spin-coated thin films as well as in bulk form. The processing conditions were optimized to achieve good uniform dispersion of the nanoparticles in the polymer matrix. SEM scans revealed clustering of nanoparticles which was particularly evident at the surface in the conducting polymer nanocomposites. Magnetic hysteresis loop measurements indicate large coercivities associated with the clusters and surface oxidation of the Fe particles. Overall, the excellent dispersion coupled with reasonable control over magnetic properties achieved in our experiments is promising for electromagnetic applications of these materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 788: Symposium L – Continuous Nanophase and Nanostructured Materials , 2003 , L3.42
Copyright
Copyright © Materials Research Society 2004

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References

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