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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 &amp; 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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 &amp; 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF APPLIED POLYMER SCIENCE

ISSN

0021-8995

e-ISSN

1097-4628

Svazek periodika

140

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000893912200001

EID výsledku v databázi Scopus

2-s2.0-85143983266