Dosimetry characterization of tetrazolium violet-polyvinylalcohol films

Emi-Reynolds, G.; Kovács, András; Fletcher, J. J.

doi:10.1016/j.radphyschem.2007.02.064

Cited by 25 publications

(10 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The polymer materials that have been explored include polyvinyl alcohol (PVA) [ 5 , 13 ]; polycarbonate [ 17 ]; polyvinyl chloride [ 18 ]; and polyvinyl butyric [ 14 ]. Meanwhile, coloring materials as indicators include: methylene blue and methylene red [ 4 ]; thymolphthalein (TP) [ 5 ]; ethyl violet and blue bromophenol [ 19 ]; cresol red (CR) [ 20 ]; tetrazolium violet [ 21 ]; and methyl viologen [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

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

Doyan

Susilawati

Prayogi³

et al. 2021

Polymers

View full text Add to dashboard Cite

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 60Cobalt 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.

show abstract

Section: Introductionmentioning

confidence: 99%

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

Doyan

Susilawati

Prayogi³

et al. 2021

Polymers

View full text Add to dashboard Cite

show abstract

“…• H is generally associated with the reversible reductive decolonization, and the radicals • OH and • HO 2 /O 2− are considered to be the cause of the reversible oxidative decolonization.Besides these few examples on the use of dyes as chemical dosimeters, there are many other citations available in the literature on this topic[72][73][74][75][76][77][78].…”

mentioning

confidence: 99%

Radiation induced degradation of dyes—An overview

Rauf

Ashraf

2009

Journal of Hazardous Materials

247

View full text Add to dashboard Cite

“…The change in color, from transparent colorless for PVA film to clear yellow for unirradiated PVA/NBT and to yellowish-brown gradually after X-irradiation, confirmed the high sensitivity of the made nanocomposite films to low radiation doses (at the mGy scale). The formation of hydrazine due to the reduction of the formazan may be the consequence of the change in color of the films [ 45 , 46 ]. The further studies presented in the following will show the effect of X-irradiation on other parameters.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of a New Nanocomposite Film Based on Polyvinyl Alcohol Polymer and Nitro Blue Tetrazolium Dye as a Low Radiation Dosimeter in Medical Diagnostics Application

2021

View full text Add to dashboard Cite

Dosimetry is a field of increasing importance in diagnostic radiology. There has been a realization among healthcare professionals that the dose of radiation received by patients via modern medical X-ray examinations could induce acute damage to the skin and eyes. The present study highlights the synthesis of polyvinyl alcohol/nitro blue tetrazolium nanocomposite films (PVA/NBT) for radiation detection depending on chromic, optical, chemical and morphologic changes. First, we synthesized the nanocomposite film-based PVA doped with NBT and the different parameters of the preparation procedure were optimized. Then The films were exposed to different low X-ray doses on the scale of mGy level (0, 2, 4, 10 and 20 mGy). The sensitivity and the performance of the made composite films were evaluated via different characterization methods. Indeed, the response curve based on UV-Vis absorptions revealed a linear increase in absorbance with increased radiation doses (R = 0.998). FTIR analysis showed a clear chemical modification in recorded spectra after irradiation. X-ray diffraction assessment revealed clear structural changes in crystallinity after ionization treatment. SEM analysis showed a clear morphological modification of PVA/NBT films after irradiation. In addition, the prepared PVA/NBT films exhibited excellent pre- and post-irradiation stability in dark and light. Finally, the quantitative colorimetry study confirmed the performance of the prepared films and the different colorimetric coordinates, the total color difference (∆E) and the color strength (K/S) showed a linear increase with increasing X-ray doses. The made nanocomposite PVA/NBT film might offer promising potential for an effective highly sensitive medical dosimeter applied for very low doses in X-ray diagnostic radiology.

show abstract

Dosimetry characterization of tetrazolium violet-polyvinylalcohol films

Cited by 25 publications

References 3 publications

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

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

Radiation induced degradation of dyes—An overview

Synthesis and Characterization of a New Nanocomposite Film Based on Polyvinyl Alcohol Polymer and Nitro Blue Tetrazolium Dye as a Low Radiation Dosimeter in Medical Diagnostics Application

Contact Info

Product

Resources

About