GAMMA IRRADIATION-INDUCED MODIFICATIONS IN THE STRUCTURAL AND DIELECTRIC PROPERTIES OF GO/PVA/AgNW NANOCOMPOSITES

  • Marjetka Conradi Institute of Metals and Technology, Lepi pot 11, 1000 Ljubljana, Slovenia
  • Črtomir Donik Institute of Metals and Technology, Lepi pot 11, 1000 Ljubljana, Slovenia
  • Mustafa Muradov Nano Research Laboratory, Baku State University, 23 Academik Zahid Khalilov Street, Baku AZ1148, Azerbaijan
  • Goncha Eyvazova Nano Research Laboratory, Baku State University, 23 Academik Zahid Khalilov Street, Baku AZ1148, Azerbaijan
  • Ahmed Asimov Composite Materials Scientific Research Center of Azerbaijan State University of Economics, 194 Murtuza Mukhtarov, Baku AZ1065, Azerbaijan
  • Muhammed Baghir Baghirov Nano Research Laboratory, Baku State University, 23 Academik Zahid Khalilov Street, Baku AZ1148, Azerbaijan
DOI: https://doi.org/10.17222/mit.2025.1594
Keywords: gamma irradiation, nanocomposite, graphene oxide, silver nanowire

Abstract

Solution casting was used to create GO/PVA/AgNW nanocomposites, which were then exposed to gamma irradiation at dosages of (8, 25 and 50) kGy. XRD, SEM, XPS, and dielectric spectroscopy were used to examine the nanocomposites’ structural, morphological, and dielectric characteristics. XRD analysis confirmed the successful synthesis of the nanocomposites and indicated that no significant oxidation occurred due to -irradiation. Interestingly, the sample exposed to 25 kGy radiation showed the lowest degree of crystallinity. With no discernible morphological changes across all irradiation doses, SEM images revealed a homogeneous dispersion of GO inside the polymer matrix and a random distribution of AgNWs throughout the composite. XPS results demonstrated that silver retained its metallic state, while gamma irradiation enhanced its surface contribution. Dielectric measurements revealed that the sample irradiated at 8 kGy exhibited the highest dielectric permittivity and electrical conductivity. This response is fundamentally linked to the increased freedom of charge carriers, a consequence of polymer chain scission processes and the simultaneous introduction of oxygenated functional moieties. These structural modifications facilitate easier charge transport pathways within the composite matrix.

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Published
2026-02-02
How to Cite
1.
Conradi M, Donik Črtomir, Muradov M, Eyvazova G, Asimov A, Baghir BaghirovM. GAMMA IRRADIATION-INDUCED MODIFICATIONS IN THE STRUCTURAL AND DIELECTRIC PROPERTIES OF GO/PVA/AgNW NANOCOMPOSITES. MatTech [Internet]. 2026Feb.2 [cited 2026Aug.10];60(1):41–48. Available from: https://mater-tehnol.si/index.php/MatTech/article/view/1594
Issue
Vol. 60 No. 1 (2026): Materials and Technology
Section
Articles