Effect of Gamma Irradiation on the Dielectric Properties and X-Ray Phase Analysis of the Polypropylene Na+Montmorillonite Composite
Abstract
Effect of γ-irradiation on the dielectric properties of polymer composites based on polypropylene (PP) with Na+-montmorillonite (MMT) nanoparticles has been investigated. It has been found that γ-irradiation in the dose range of 100-200 kGy leads to slight deterioration in the dependences of ε = f(T) (a) and tgδ = f(T) of the polypropylene-based composite with Na+MMT filler. Further increasing the radiation dose, a sharp increase in ε and tgδ above the temperature ~ 440 K has been observed. The obtained results show that after irradiation, the active centers, radicals, and defects formed in the polymer structure interact with filler nanoparticles, reducing the mobility of the polymer chain and consequently decreasing the values of ε and tagδ of the composite. But at an irradiation dose of 300 kGy, the properties of the interphase layer deteriorate as a result of incipient destruction, which leads to an insignificant increase in the values of ε and tgδ. The results of the analyses showed that the introduction of Na nanoclays (MMT) into polypropylene in an amount of 0.5% by volume leads to some improvement in the dielectric properties before and after irradiation. It is assumed that the deterioration of the dielectric properties during irradiation in composites occurs due to changes in the crosslinking and destruction processes in the polymer matrix and at the polymer-filler interphase boundary. It is shown that due to γ-irradiation of polymer composites, it is possible to expediently control its dielectric and electrophysical properties.
Downloads
References
C.S. Ha, and A.S. Mathews. “Polyimides and High-Performance Organic Polymers,” in: Advanced Functional Materials, (Springer, Germany, 2011). https://doi.org/10.1007/978-3-642-19077-3_1
W.K. Busfield, and J.H. O'Donnell. “Effects of gamma radiation on the mechanical properties and crystallinity of polypropylene film,” European Polymer Journal, 15(4), 379-387 (1979). https://doi.org/10.1016/0014-3057(79)90157-5
M.Z. Rong, M.Q. Zhang, and W.H. Ruan, “Surface modification of nanoscale fillers for improving properties of polymer nanocomposites: a review,” Mater. Sci. Technol. 22, 787-796 (2006). https://doi.org/10.1179/174328406X101247
A. Dutta, and A.K. Ghosh, “Investigation on γ-irradiated PP/ethylene acrylic elastomer TPVs by rheological and thermal approaches,” Radiation Physics and Chemistry, 144, 149-158 (2018). https://doi.org/10.1016/j.radphyschem.2017.11.007
A.A. Moez, S.S. Aly, and Y.H. Elshaer, “Effect of gamma radiation on low- density polyethylene (LDPE) films: optical, dielectric and FTIR studies,” Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 93, 203-207 (2012). https://doi.org/10.1016/j.saa.2012.02.031
S. Sinha Ray, and M. Okamoto, “Polymer/layered silicate nanocomposites: a review from preparation to processing,” Progress in Polymer Science, 28(11), 1539-1641 (2003). https://doi.org/10.1016/j.progpolymsci.2003.08.002
N. Gasanov, F. Khallokov, et al. “Optical Absorption Edge of TlIn1-xYbxS2 Single Crystals and the Effect of Electron Irradiation on their Bandgap,” Norwegian Journal of development of the International, (124), 86-90 (2024). https://zenodo.org/records/10515000
R.S. Madatov, R.M. Mamishova, A. Abasova, and Sh. Alahverdiyev, “Differential-thermal analysis and a microscopic study of the effect of γ-radiation on CuTlSe2 single crystal,” International Journal of Modern Physics B, 37(30), 2350265 (2023). https://doi.org/10.1142/S021797922350265X
M.A. Ramazanov, S.A. Abasov, R.L. Mamedova, and A.A. Rasulova. “Effect of the Structure and Charge State on the Strength Properties of Nanocomposites Based on PP + Dk2 Films,” Surface Engineering and Applied Electrochemistry, 47(6), 481 483 (2011). https://doi.org/10.3103/S1068375511060160
A. Sukhanova, A. Boyandin, N. Ertiletskaya, T. Shalygina, A. Shabanov, A. Vasiliev, I. Obvertkin, et al. “Composite Polymer Granules Based on Poly-ε-Caprolactone and Montmorillonite Prepared by Solution-Casting and Melt Extrusion,” Polymers (Basel), 15(20), 4099 (2023). https://doi.org/10.3390/polym15204099
A.A. Bakhsh, “Gamma-Ray Modified Polymer/Clay Composites: Synthesis, Characterization, and Formulation Optimization Using Multivariate Calculus and Graph Theory,” Energies, 14(9), 2724 (2021). https://doi.org/10.3390/en14092724
R.S. Madatov, and R.M. Mamishova, “A study of the effect of γ-radiation on the current-carrying mechanism in the P-CuTlS2 single crystal,” J. Modern Physics Letters B, 38(30), 2450295 (2024). https://doi.org/10.1142/S0217984924502956
M.E. Gouda, and T.Y. Elrasasi, “Impact of gamma irradiation on structural and dielectric properties of CuI-PVA/PEDOT: PSS polymer nanocomposite,” IOSR J. Appl. Phys. 7, 22-30 (2015). https://www.iosrjournals.org/iosr-jap/papers/Vol7-issue6/Version-2/D07622230.pdf
Copyright (c) 2025 Rasmiyya L. Mammadova, Kamala М. Guseinova, Kifayat A. Guliyeva, Khayal Sh. Valibayov, Vafa E. Atayeva, Dilara M. Qafarova
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
