Spectral response of solvent-cast polyvinyl chloride (PVC) thin film used as a long-term UV dosimeter

Amar, Abdurazaq; Parisi, Alfio V.

doi:10.1016/j.jphotobiol.2013.05.012

Cited by 15 publications

(6 citation statements)

References 29 publications

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“…Similar data for solvent-cast sheets of PVC, manufactured for graphic arts applications, were recently published and the merit of the material as a UV dosimeter discussed. 20 The data on wavelength sensitivity as well as activation spectra determined for solvent-cast plastic generally agreed with those already published for injection molded rPVC. 21,22 This shows that the wavelength sensitivity of these materials is governed primarily by the nature of the polymer rather than the additives or processing-related factors.…”

Section: Pvc In Building and Constructionsupporting

confidence: 86%

Consequences of stratospheric ozone depletion and climate change on the use of materials

Andrady

Torikai²,

Redhwi

et al. 2014

Photochem Photobiol Sci

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Materials used in the exterior of buildings and in construction are routinely exposed to solar UV radiation. Especially in the case of wood and plastic building materials, the service life is determined by their weather-induced deterioration. Any further increase in ground-level solar UV radiation, UV-B radiation in particular, will therefore reduce the outdoor service life of these products. Any increase in ambient temperature due to climate change will also have the same effect. However, the existing light-stabilizer technologies are likely to be able to mitigate the additional damaging effects due to increased solar UV radiation and maintain the outdoor lifetimes of these materials at the present levels. These mitigation choices invariably increase the lifetime cost of these products. A reliable estimate of what this additional cost might be for different products is not available at the present time. Personal exposure to UV radiation is reduced both by clothing fabrics and glass windows used in buildings and automobiles. This assessment describes how the recent technical advances in degradation and stabilization techniques impact the lifetimes of plastics and wood products routinely exposed to solar UV radiation and the protection to humans offered by materials against solar UV radiation.

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Section: Pvc In Building and Constructionsupporting

confidence: 86%

Consequences of stratospheric ozone depletion and climate change on the use of materials

Andrady

Torikai²,

Redhwi

et al. 2014

Photochem Photobiol Sci

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“…As observed, PVC control films showed light transmission values in the UV region ranging from 53.77 ± 11.45% to 74.90 ± 7.17%, higher than those observed for PVC-Quercetin and PVC/quercetin films incorporated with AgNPs. These results show that PVC films present modest barrier properties to UV light due to the amorphous structure of the polymer matrix that provides a transparency to the films (Amar & Parisi, 2013;Braga et al, 2017).…”

Section: Light Transmission and Film Transparencymentioning

confidence: 80%

“…Active films were prepared by solvent casting, following the modified procedure previously reported elsewhere (Amar & Parisi, 2013;Braga, Rangel, Suarez, & Machado, 2017). Initially, 0.5 g of PVC was slowly dissolved under constant agitation using a magnetic stirrer (model Go-Stirrer MS-H-S Go-Lab) in 20 mL THF containing 200 μL of industrial epoxidized soybean oil as a plasticizer and kept under boiling (65°C) for 120 s. Subsequently, the homogeneous solutions were mixed with 0.4% of quercetin and silver nitrate (AgNPs) (0.0, 1.0, 4.0 and 8.0%).…”

Section: Formation Of Active Filmsmentioning

confidence: 99%

Evaluation of the antimicrobial, antioxidant and physicochemical properties of Poly(Vinyl chloride) films containing quercetin and silver nanoparticles

Braga¹,

Pérez

Soazo

et al. 2019

LWT

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This work provides details regarding the physicochemical, antimicrobial and antioxidant properties of poly(vinyl chloride) (PVC)-based films containing 0.4% quercetin and silver nanoparticles (AgNPs) at various concentrations levels. The incorporation of quercetin and AgNPs into the PVC matrix considerably affected the thermal, mechanical and optical properties of the films. Results obtained from the tensile stresgth test, demonstrated an improvement in the mechanical strength of the films after the incorporation of both quercetin and AgNPs. Moreover, an increase in AgNPs concentration increased the rigidity, as compared to control PVC film. Antimicrobial activity against food pathogens (Escherichia coli, Salmonella Typhimurium and Listeria monocytogenes) was evaluated by an antimicrobial barrier test. Results showed that the PVC-based films with quercetin and AgNPs proved to be highly effective to inhibiting bacterial growth. Therefore, these results indicate promising evidence to possibly aid in the prevention of microbial dissemination in foods. Additionally, films incorporated with quercetin and AgNPs expressed an antioxidant capacity when evaluated via the DPPH method. Among all of the films evaluated, the PVC-based films containing 0.4% quercetin and 1% AgNPs were flexible, exhibiting excellent UV-light barrier properties and for use with fatty foods, with the intent of reducing lipid oxidation and preventing food pathogen dissemination.

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“…34,657-6, Sigma Aldrich) dissolved in tetrahydrofuran (THF) [20] on a specifically constructed casting table employing a glass slab smooth to one micron. The spectral response of the PVC dosimeter determined there was no reaction of this dosimeter in the UVA area [17]. These sheets have an average thickness of 26 μm as measured using a thickness gauge (Logitech, UK).…”

Section: Dosimeter Fabricationmentioning

confidence: 99%

“…A PPO dosimeter with its larger dynamic range can record longer exposures of five or seven days subject to seasonal and atmospheric conditions [15]. An extension of this type of dosimeter is the PVC based dosimeter [16,17] …”

Section: Introductionmentioning

confidence: 99%

Dosimeter based on 8-methoxypsoralen for UVA exposures over extended periods

Wainwright

Parisi

Downs

2015

Journal of Photochemistry and Photobiology B: Biology

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Spectral response of solvent-cast polyvinyl chloride (PVC) thin film used as a long-term UV dosimeter

Cited by 15 publications

References 29 publications

Consequences of stratospheric ozone depletion and climate change on the use of materials

Consequences of stratospheric ozone depletion and climate change on the use of materials

Evaluation of the antimicrobial, antioxidant and physicochemical properties of Poly(Vinyl chloride) films containing quercetin and silver nanoparticles

Dosimeter based on 8-methoxypsoralen for UVA exposures over extended periods

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