Turkish Journal of Chemistry
Abstract
Conducting polymers exhibit interesting dielectric properties due to their unique conjugated π-electron backbone. The objective of this study was to examine the dielectric properties of nanocomposites containing a conducting nanohybrid (NH) as a filler. Polyaniline was grafted onto sepiolite by in situ emulsion graft polymerization to synthesize a conducting NH. This NH was blended with poly(vinyl chloride) (PVC) using a melt blending technique. Nanocomposites with variable amounts of nanofiller were prepared and characterized. Fourier-transform infrared (FT-IR) spectra of the NH composites show strong interactions between their individual components. The addition of the nanofiller into PVC increased its thermomechanical properties. Dielectric loss factor and permittivity increased with nanofiller content and decreased frequency, exhibiting strong interfacial polarization in the low frequency range. Incorporation of the nanofiller into the PVC matrix increased conductivity up to 7.9 × 10−7 S/cm and substantially decreased impedance. The results demonstrate the potential of the nanocomposite for electromagnetic interference shielding, biomedical applications, biosensing, and environmental sensing.
Author ORCID Identifier
ASIF RAZA: 0000-0003-3069-8027
TARIQ YASIN: 0000-0002-9121-4041
MUHAMMAD NADEEMFARHAN: 0000-0000-0000-0001
DOI
10.55730/1300-0527.3744
Keywords
Nanohybrid polymer composite, conducting polymer, dielectric, impedance
First Page
460
Last Page
469
Publisher
The Scientific and Technological Research Council of Türkiye (TÜBİTAK)
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
RAZA, A, YASIN, T, NADEEM, M, & FARHAN, M. A (2025). Dielectric and mechanical properties of polyaniline-grafted sepiolite loaded PVC nanocomposites. Turkish Journal of Chemistry 49 (4): 460-469. https://doi.org/10.55730/1300-0527.3744
