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Article

Optical Properties and Conductivity of PVA–H3PO4 (Polyvinyl Alcohol–Phosphoric Acid) Film Blend Irradiated by γ-Rays

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Master of Science Education Program, University of Mataram, Jl. Majapahit No. 62, Mataram 83125, Indonesia
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Physics Education, FKIP, University of Mataram, Jl. Majapahit No. 62, Mataram 83125, Indonesia
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Faculty of Applied Science and Enginering, Universitas Pendidikan Mandalika UNDIKMA, Jl. Pemuda No. 59A, Mataram 83126, Indonesia
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Department of Materials Engineering, Institut Teknologi Sumatera, Lampung Selatan 35365, Indonesia
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Faculty of Engineering, Universiti Malaysia Sabah, Jln UMS, Kota Kinabalu 88400, Malaysia
*
Authors to whom correspondence should be addressed.
Academic Editor: Kyung Hye Jung
Polymers 2021, 13(7), 1065; https://doi.org/10.3390/polym13071065
Received: 12 February 2021 / Revised: 18 March 2021 / Accepted: 25 March 2021 / Published: 28 March 2021
(This article belongs to the Special Issue Polymer-Based Electrodes)
This study assesses the optical properties and conductivity of PVA–H3PO4 (polyvinyl alcohol–phosphoric acid) polymer film blend irradiated by gamma (γ) rays. The PVA–H3PO4 polymer film blend was prepared by the solvent-casting method at H3PO4 concentrations of 75 v% and 85 v%, and then irradiated up to 25 kGy using γ-rays from the Cobalt-60 isotope source. The optical absorption spectrum was measured using an ultraviolet–visible spectrophotometer over a wavelength range of 200 to 700 nm. It was found that the absorption peaks are in three regions, namely two peaks in the ultraviolet region (310 and 350 nm) and one peak in the visible region (550 nm). The presence of an absorption peak after being exposed to energy indicates a transition of electrons from HOMO to LUMO within the polymer chain. The study of optical absorption shows that the energy band gap (energy gap) depends on the radiation dose and the concentration of H3PO4 in the polymer film blend. The optical absorption, absorption edge, and energy gap decrease with increasing H3PO4 concentration and radiation dose. The interaction between PVA and H3PO4 blend led to an increase in the conductivity of the resulting polymer blend film. View Full-Text
Keywords: optical properties; conductivity; gamma irradiation; polymer film blend optical properties; conductivity; gamma irradiation; polymer film blend
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MDPI and ACS Style

Susilawati, S.; Prayogi, S.; Arif, M.F.; Ismail, N.M.; Bilad, M.R.; Asy’ari, M. Optical Properties and Conductivity of PVA–H3PO4 (Polyvinyl Alcohol–Phosphoric Acid) Film Blend Irradiated by γ-Rays. Polymers 2021, 13, 1065. https://doi.org/10.3390/polym13071065

AMA Style

Susilawati S, Prayogi S, Arif MF, Ismail NM, Bilad MR, Asy’ari M. Optical Properties and Conductivity of PVA–H3PO4 (Polyvinyl Alcohol–Phosphoric Acid) Film Blend Irradiated by γ-Rays. Polymers. 2021; 13(7):1065. https://doi.org/10.3390/polym13071065

Chicago/Turabian Style

Susilawati, Susilawati, Saiful Prayogi, Muhamad F. Arif, Noor M. Ismail, Muhammad R. Bilad, and Muhammad Asy’ari. 2021. "Optical Properties and Conductivity of PVA–H3PO4 (Polyvinyl Alcohol–Phosphoric Acid) Film Blend Irradiated by γ-Rays" Polymers 13, no. 7: 1065. https://doi.org/10.3390/polym13071065

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