Dielectric and electromagnetic interference shielding properties of nano-silicon carbide/montmorillonite and graphene nanoplatelets filled polyvinylidene fluoride/poly(3,4-ethylenedioxythiophene)-block-poly(ethylene glycol) blend nanocomposites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F23%3A43967292" target="_blank" >RIV/49777513:23640/23:43967292 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/app.53510" target="_blank" >https://doi.org/10.1002/app.53510</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/app.53510" target="_blank" >10.1002/app.53510</a>
Alternative languages
Result language
angličtina
Original language name
Dielectric and electromagnetic interference shielding properties of nano-silicon carbide/montmorillonite and graphene nanoplatelets filled polyvinylidene fluoride/poly(3,4-ethylenedioxythiophene)-block-poly(ethylene glycol) blend nanocomposites
Original language description
Herein, hybrid polymer nanocomposite films comprising polyvinylidene fluoride (PVDF) and poly(3,4-ethylenedioxythiophene)-block-poly(ethylene glycol) (PEDOT-block-PEG) as matrices and silicon carbide nanoparticles (SiC NPs), montmorillonite (MMT) nanoclay, and graphene nanoplatelets (GNPs) as nanofillers were fabricated by solution casting. The structural, morphological, and thermal characteristics of the nanocomposite films were assessed using Fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), scanning electron microscope (SEM), thermogravimetric analyzer (TGA), and differential scanning calorimetry (DSC). The SEM results show the homogeneous distribution of nanofillers within the polymer matrix. The dielectric behavior and electromagnetic interference shielding efficiency (EMI SE) of the nanocomposites were also analyzed. The maximum dielectric constant (epsilon) and dielectric loss (tan delta) obtained are 47.77 and 12.08, respectively, at lower frequency (50 Hz, 150 & DEG;C). The maximum EMI SE was observed to be 16.8 dB in the Ku-band region (12-18 GHz) for the nanocomposites with 20 wt% SiC, 8 wt% MMT, and 2 wt% GNPs loading. The EMI shielding was found to be absorption dominant and originated from the formation of a conductive network between hybrid nanofillers within the PVDF/PEDOT-block-PEG blend thereby improving the EMI SE values. These results suggest that PVDF/PEDOT-block-PEG/SiC/MMT/GNPs nanocomposites can be used as an efficient EMI shielding material.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF APPLIED POLYMER SCIENCE
ISSN
0021-8995
e-ISSN
1097-4628
Volume of the periodical
140
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
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UT code for WoS article
000893912200001
EID of the result in the Scopus database
2-s2.0-85143983266