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Ag induced electromagnetic interference shielding of Ag-graphite/PVDF flexible nanocomposites thinfilms
Sakthivel Dinesh Kumar,
Published in American Institute of Physics Inc.
2015
Volume: 107
   
Issue: 11
Abstract
We report Ag nanoparticle induced Electromagnetic Interference (EMI) shielding in a flexible composite films of Ag nanoparticles incorporated graphite/poly-vinylidene difluoride (PVDF). PVDF nanocomposite thin-films were synthesized by intercalating Ag in Graphite (GIC) followed by dispersing GIC in PVDF. The X-ray diffraction analysis and the high-resolution transmission electron microscope clearly dictate the microstructure of silver nanoparticles in graphite intercalated composite of PVDF matrix. The conductivity values of nanocomposites are increased upto 2.5 times when compared to neat PVDF having a value of 2.70S/cm at 1MHz. The presence of Ag broadly enhanced the dielectric constant and lowers the dielectric loss of PVDF matrix proportional to Ag content. The EMI shielding effectiveness of the composites is 29.1dB at 12.4GHz for the sample having 5wt.% Ag and 10wt.% graphite in PVDF. © 2015 AIP Publishing LLC.
About the journal
JournalData powered by TypesetApplied Physics Letters
PublisherData powered by TypesetAmerican Institute of Physics Inc.
ISSN00036951
Open AccessNo
Concepts (23)
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    Composite films
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    Dielectric losses
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    Electromagnetic pulse
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    Electromagnetic shielding
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    Electromagnetic wave interference
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    Graphite
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    Intercalation
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    Metal nanoparticles
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    Nanocomposite films
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    Nanocomposites
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    Nanoparticles
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    Shielding
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    Signal interference
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    X ray diffraction analysis
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    Ag nanoparticle
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    DIFLUORIDE
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    ELECTROMAGNETIC INTERFERENCE SHIELDING
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    EMI SHIELDING EFFECTIVENESS
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    Flexible composites
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    INTERCALATED COMPOSITES
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    Nanocomposite thin films
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    Silver nanoparticles
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    Silver