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Structural characterization and dielectric parameters of polyindole/ WO 3 nanocomposites
Author(s) -
Erdönmez Seda,
Karabul Yaşar,
Kılıç Mehmet,
Güven Özdemir Zeynep,
Esmer Kadir
Publication year - 2021
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.25905
Subject(s) - materials science , nanocomposite , context (archaeology) , dielectric , composite material , scanning electron microscope , tungsten trioxide , permittivity , fourier transform infrared spectroscopy , transmission electron microscopy , dielectric loss , nanorod , analytical chemistry (journal) , tungsten , chemical engineering , nanotechnology , optoelectronics , paleontology , chemistry , chromatography , metallurgy , engineering , biology
In the present study, polyindole/tungsten trioxide (PIn/WO 3 ) nanocomposites have been prepared and characterized in the context of their structural properties as well as frequency‐dependent (ac) electrical features for the first time. While PIn polymer has been synthesized by chemical oxidative polymerization, WO 3 nanorods have been obtained by using the hydrothermal method. Several studies, that is, transmission electron microscopy, Fourier transform infrared, energy dispersive X‐ray, X‐ray diffraction analysis, scanning electron microscopy, dielectric properties on these PIn/WO 3 nanocomposites have been carried out. These investigations showed the average particle size of WO 3 between 15.36 and 44.71 nm. The pure PIn and WO 3 were compatible with the surface morphology of the PIn and WO 3 reported in the scientific literature. The dielectric analyses have been carried out in the context of both the real and imaginary components of complex permittivity and electrical modulus. The ε ′ values of all PIn/WO 3 composites have been observed lower than that of pure Pln and ε ′ decreased with the increasing amount of WO 3 in the PIn matrix for the low‐frequency range. Electric modulus analysis showed that the increase in M ′ value with frequency implies a tendency to reach a M max ′ value which can be interpreted as short‐range mobile charge carriers perform the electrical conductivity.