Effect of 70MeV 12C⁵⁺ ion beam on structural and dielectric properties of PVC, PVDF, PVC-PVDF and PVC-PVDF-GO hybrid nanocomposites

Abstract

The PVC-PVDF-GO nanocomposites thin films were prepared by solution casting method. A thin film of Polyvinyl chloride (PVC), Polyvinylidene fluoride (PVDF), PVC-PVDF-GO was uniformly irradiated with a carbon ion beam at 70 MeV over a surface of 1 cm² in a vacuum of almost 5 × 10⁻⁷ torr with ion fluencies of 1 × 10¹² and 2 × 10¹³ ions/cm². Fourier transform infrared (FTIR) spectroscopy was observed to track changes in the β-content, represented as F(β)%, during the recrystallization of PVDF after irradiation. At ambient temperature, the variation of dielectric constant and dielectric loss has been studied for pristine and irradiated samples. Ion beam irradiation caused significant changes to the dielectric constant and dielectric loss. After irradiation, the dielectric constant (ϵ′) increases at lower fluence (1 × 10¹² ions/cm²), but decreases at higher fluence (2 × 10¹³ ions/cm²) in comparison with the pristine polymer samples. In PVDF, free radicals are generated by chain scission and cross-linking.

KEYWORDS:

• Hybrid nanocomposites
• Ion beam
• FTIR
• SEM
• Dielectric constant

Acknowledgments

We are also thankful to Director, IUAC, New Delhi for providing irradiation and characterization facilities under BTR scheme (i.e. BTR no. 56313). ‘One of the authors Dr. M. S. Gaur thanks Slovak Government for awarding National Slovak Scholarship for international university teachers, researchers and artists.’

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by IUAC [grant number: BTR no. 56313].

Notes on contributors

Rohan Sagar

Rohan Sagar is currently, joined a Postdoctoral position in the Department of Bio-industrial Mechatronics Engineering at National Chung Hsing University (NCHU), Taiwan. He received his Ph.D. in Physics from Dr. A.P.J. Abdul Kalama Technical University (AKTU), Lucknow, U.P., India, in 2022. His Master’s in Physics from the Dr. Bhimrao Ambedkar University (DBRU), Agra, U.P., India, in 2011. He received his bachelor’s degree in Applied Science from the Dr. Bhimrao Ambedkar University (DBRU), Agra, U. P., India, in 2009. His research area mainly focused on the dielectric constant, polymer nanocomposites, FT-IR and metal–organic framework (MOF).

M. S. Gaur

M. S. Gaur is currently working as a Professor of Physics, Dean R & D at Hindustan College of Science and Technology (HCST), Farah (Mathura) U.P. affiliated to Dr. A.P.J. Abdul Kalama Technical University (AKTU), U.P., Lucknow, India since 1996. His interests include the radiation effects in polymer and polymer nanocomposites, electrical, optical and thermal properties of polymer nanocomposite. He has published 119 articles in the area of interest.

Sergej Iľkovič

Sergej Iľkovič interested in polymer and optical properties. He is working as a Associate Professor at Faculty of Humanities and Natural Sciences, Presov University, Presov, 08001, Slovak Republic.

Ching-Chou Wu

Ching-Chou Wu received his Ph.D. from the Department of Biomedical Engineering, National Cheng Kung University, Taiwan, in 2003. Afterward, he joined Prof. Tomokazu Matsue’s laboratory at Tohoku University, Japan, as a postdoctoral research fellow until January 2005. Since 2014, he has been a professor in the Department of Bio-industrial Mechatronic Engineering (BIME), National Ching-Hsing University (NCHU), Taiwan. His expertise mainly focuses on electrochemical biosensors, electrokinetic control, affinity biosensors, cell-based chips, SEM-EDS microscopy of hybrid nanocomposites and microfluidic devices. From 2017–2020, he served as chairman of the Department of BIME, NCHU. He served as the president (2018–2020) and the vice president (2016–2018) of the Association of Chemical Sensors in Taiwan (ACST). He is also serving as an editor of reputed journals, including Critical Reviews™ in Biomedical Engineering (2019 – current), Biosensors (2020 – present), Biomedical Microdevices (2021 – current), and Biosensors and Bioelectronics: X (2022 – current). Moreover, he is one of the steering committees of the Asian Conference on Chemical Sensors (ACCS).