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Novel poly (vinyl butyral) (PVB)/polyaniline-cenosphere composite film for EMI shielding
P.J. Bora, N. Shahidsha, , Kishore, P.C. Ramamurthy
Published in American Institute of Physics Inc.
2016
Volume: 1728
   
Abstract
in-situ synthesis of polyaniline (PANI)/fly ash cenosphere (hollow microspheres) composite was carried out under nitrogen atmosphere at-30±2 °C. Investigated electromagnetic shielding effectiveness (EMI SE) of free standing PVB/PANI-cenosphere (PVBPC) composite films prepared by solution casting indicates an ap preciable shielding. The most effective EMI SE of 30.3dB was obtained for 197±3μm thicker flexible film over the frequency range 8.2-12.4GHz. Mechanistically, absorption was found to be dominant. The obtained shielding effectiveness due to absorbance (SEA) of PVBPC film is more than two times higher than PVB/PANI composite film. In the presence of hollow PANI-cenospheres in PVB matrix the time average power of incident electromagnetic wave decreases resulting in an increase of absorbance. © 2016 Author(s).
About the journal
JournalData powered by TypesetAIP Conference Proceedings
PublisherData powered by TypesetAmerican Institute of Physics Inc.
ISSN0094243X