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Electromagnetic interference shielding characteristics and shielding effectiveness of polyaniline-coated films

  • Korea Advanced Institute of Science and Technology

Research output: Contribution to journalArticlepeer-review

Abstract

The study aims to investigate the electromagnetic interference (EMI) shielding characteristics and shielding effectiveness (SE) of polyaniline (PANI)-coated films. Free-standing films of emeraldine salt were obtained by PANI-emeraldine base with dode-cylbenzensulfonic acid on a polyethylene terephthalate film. The four-point probe method was employed to measure the electrical resistivity for investigating the electromagnetic characteristics of PANI-coated films. In addition, the SE of the PANI-coated films was measured in two different ways: a flanged coaxial shielding effectiveness test and a shielding effectiveness on the testbed having a box-type chamber equipped with instruments for electromagnetic shielding testing under real conditions. The overall SE measured from experiments was also compared with the approximate SE value calculated from a theoretical method. The present study has shown the possibility of utilizing PANI-coated films as EMI shielding/absorption materials.

Original languageEnglish
Pages (from-to)3492-3496
Number of pages5
JournalThin Solid Films
Volume519
Issue number11
DOIs
StatePublished - 31 Mar 2011
Externally publishedYes

Keywords

  • Electromagnetic interference
  • Experiments for EMI SE
  • Intrinsically conductive polymer
  • Polyaniline
  • Shielding effectiveness

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