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用于伽马辐射剂量测定的聚乙烯醇、三氯乙烯和甲酚红聚合物薄膜混合物

Polymer Film Blend of Polyvinyl Alcohol, Trichloroethylene and Cresol Red for Gamma Radiation Dosimetry.

作者信息

Doyan Aris, Susilawati Susilawati, Prayogi Saiful, Bilad Muhammad Roil, Arif Muhamad Fatikul, Ismail Noor Maizura

机构信息

Science Education Program, University of Mataram, Jl. Majapahit No. 62, Mataram 83125, Indonesia.

Physics Education, FKIP, University of Mataram, Jl. Majapahit No. 62, Mataram 83125, Indonesia.

出版信息

Polymers (Basel). 2021 Jun 4;13(11):1866. doi: 10.3390/polym13111866.

DOI:10.3390/polym13111866
PMID:34199714
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8200037/
Abstract

This study investigated the polymer film composite of polyvinyl alcohol (PVA), trichlorethylene (TCE) and cresol red (CR) dye irradiated with gamma (γ) rays for potential application as radiation dosimetry. The film was prepared via the solvent-casting method with varying concentrations of TCE. Film samples were exposed to radiation from a γ-rays radiation source of Cobalt isotope. Color changes before and after γ-rays irradiation were observed, and the optical properties of the polymer films were investigated by spectrophotometry. Results show that increasing the radiation dose physically changed the color of the polymer film, from purple (pH > 8.8) without radiation (0 kGy) to yellow (almost transparent) (2.8 < pH < 7.2) at the highest dose (12 kGy). The concentration of acid formed due to irradiation increased with the increase in irradiation doses and at higher TCE content. The critical doses of PVA-TCE composites decreased linearly with the increase of TCE composition, facilitating an easy calibration process. The dose response at 438 nm increased exponentially with increasing radiation dose, but showed an opposite trend at the 575 nm band. An increase in the TCA concentration indicated a decrease in the absorption edge and an increase in activation energy, but both decreased for all TCE concentrations at higher doses. The energy gap for the direct and the indirect transitions decreased with increasing TCE concentration and γ-rays radiation dose. The results of this study demonstrated the potential application of PVA-TCE-CR polymer film as γ-rays irradiation dosimetry in a useful dose range of 0-12 kGy.

摘要

本研究考察了用γ射线辐照的聚乙烯醇（PVA）、三氯乙烯（TCE）和甲酚红（CR）染料的聚合物薄膜复合材料作为辐射剂量测定的潜在应用。该薄膜通过溶剂浇铸法制备，TCE浓度不同。薄膜样品暴露于钴同位素γ射线辐射源的辐射下。观察γ射线辐照前后的颜色变化，并通过分光光度法研究聚合物薄膜的光学性质。结果表明，增加辐射剂量会使聚合物薄膜的颜色发生物理变化，从无辐射（0 kGy）时的紫色（pH > 8.8）变为最高剂量（12 kGy）时的黄色（几乎透明）（2.8 < pH < 7.2）。辐照产生的酸浓度随辐照剂量的增加以及TCE含量的增加而增加。PVA-TCE复合材料的临界剂量随TCE组成的增加呈线性下降，便于进行校准过程。在438 nm处的剂量响应随辐射剂量的增加呈指数增加，但在575 nm波段呈现相反趋势。TCA浓度的增加表明吸收边降低且活化能增加，但在较高剂量下，所有TCE浓度的这两个参数均降低。直接跃迁和间接跃迁的能隙随TCE浓度和γ射线辐射剂量的增加而减小。本研究结果证明了PVA-TCE-CR聚合物薄膜在0 - 12 kGy的有用剂量范围内作为γ射线辐照剂量测定的潜在应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/664078319124/polymers-13-01866-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/c5a93ce41f53/polymers-13-01866-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/02bbb624a71f/polymers-13-01866-g005.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/e4efad75e487/polymers-13-01866-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/40c9dfc6b131/polymers-13-01866-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/3bbdb533cf05/polymers-13-01866-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/2986b24e691b/polymers-13-01866-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/8591ad672118/polymers-13-01866-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/68ba61c2dc35/polymers-13-01866-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/0ad70bb547ec/polymers-13-01866-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/664078319124/polymers-13-01866-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/937aa8734e29/polymers-13-01866-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/9b647399f73e/polymers-13-01866-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/f1bf67369f92/polymers-13-01866-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/c5a93ce41f53/polymers-13-01866-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/02bbb624a71f/polymers-13-01866-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/16fb3ad9675c/polymers-13-01866-g006a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/e4efad75e487/polymers-13-01866-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/40c9dfc6b131/polymers-13-01866-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/3bbdb533cf05/polymers-13-01866-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/2986b24e691b/polymers-13-01866-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/8591ad672118/polymers-13-01866-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/68ba61c2dc35/polymers-13-01866-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/0ad70bb547ec/polymers-13-01866-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c84/8200037/664078319124/polymers-13-01866-g014.jpg

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