Dielectric, AC conductivity, and complex impedance spectroscopy studies of Ti2CTx MXene reinforced polyvinyl alcohol nanocomposites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F23%3A43969554" target="_blank" >RIV/49777513:23640/23:43969554 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/pat.6117" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/pat.6117</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pat.6117" target="_blank" >10.1002/pat.6117</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dielectric, AC conductivity, and complex impedance spectroscopy studies of Ti2CTx MXene reinforced polyvinyl alcohol nanocomposites

Popis výsledku v původním jazyce

Herein, Ti(2)CTx MXene-Polyvinyl alcohol (PVA) nanocomposite films with different weight percent (wt%) of MXene loadings were successfully prepared using the facile solution casting method. The structural, morphological, optical, thermal, and tensile properties of the nanocomposite films were analyzed using FTIR, XRD, Raman, SEM, UV-Vis spectroscopy, TG-DTA, mechanical tests, and so forth. The variation in dielectric constant, loss tangent, and AC conductivity of the nanocomposite films was analyzed in the range of 1 Hz to 10 MHz with the variation of temperature (30150 degrees C) and MXene concentrations (5-20 wt%) using impedance spectroscopy. The nanocomposite films showed a very high dielectric constant in the range of similar to 10(5) for lower frequency and very low dielectric loss in the range of 0-1 for higher frequency (100 kHz-10 MHz). The dielectric constant, loss tangent, and AC conductivity values increased at a certain temperature and further decreased with increase in temperature. The increase in filler concentration increased the values of these investigated electrical parameters but at a concentration of 20 wt%, the nanocomposite films reached the percolation limit, and hence a slight reduction in the dielectric properties was noticed. Moreover, the complex impedance spectroscopy studies of the nanocomposite films were also carried out and their corresponding circuit diagrams were fitted according to the obtained cole-cole plots.

Název v anglickém jazyce

Dielectric, AC conductivity, and complex impedance spectroscopy studies of Ti2CTx MXene reinforced polyvinyl alcohol nanocomposites

Popis výsledku anglicky

Herein, Ti(2)CTx MXene-Polyvinyl alcohol (PVA) nanocomposite films with different weight percent (wt%) of MXene loadings were successfully prepared using the facile solution casting method. The structural, morphological, optical, thermal, and tensile properties of the nanocomposite films were analyzed using FTIR, XRD, Raman, SEM, UV-Vis spectroscopy, TG-DTA, mechanical tests, and so forth. The variation in dielectric constant, loss tangent, and AC conductivity of the nanocomposite films was analyzed in the range of 1 Hz to 10 MHz with the variation of temperature (30150 degrees C) and MXene concentrations (5-20 wt%) using impedance spectroscopy. The nanocomposite films showed a very high dielectric constant in the range of similar to 10(5) for lower frequency and very low dielectric loss in the range of 0-1 for higher frequency (100 kHz-10 MHz). The dielectric constant, loss tangent, and AC conductivity values increased at a certain temperature and further decreased with increase in temperature. The increase in filler concentration increased the values of these investigated electrical parameters but at a concentration of 20 wt%, the nanocomposite films reached the percolation limit, and hence a slight reduction in the dielectric properties was noticed. Moreover, the complex impedance spectroscopy studies of the nanocomposite films were also carried out and their corresponding circuit diagrams were fitted according to the obtained cole-cole plots.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

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

POLYMERS FOR ADVANCED TECHNOLOGIES

ISSN

1042-7147

e-ISSN

1099-1581

Svazek periodika

34

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

19

Strana od-do

2974-2992

Kód UT WoS článku

001007322000001

EID výsledku v databázi Scopus

2-s2.0-85161689386