A comparison study of the degradative effects and safety implications of UVC and 405 nm germicidal light sources for endoscope storage

Irving, Daniel; Lamprou, Dimitrios A.; Maclean, Michelle; MacGregor, S.J.; Anderson, John G.; Grant, M.H.

doi:10.1016/j.polymdegradstab.2016.09.006

Cited by 28 publications

(15 citation statements)

References 37 publications

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“…Thus, the additives used in the materials have been specifically designed for the critical wavelength ranges (295 -400 nm) found in natural sunlight, but their effect with respect to UV-C radiation is largely unknown. Studies on the effect of UV-C ex-posure on materials -although very informative -are only available to a limited extent to date [1] [2] [3].…”

Section: Uv Testingmentioning

confidence: 99%

Testing the Effects of UV-C Radiation on Materials

McGreer¹

2021

Int Surf Technol

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UV-C radiation is increasingly being used for disinfection to contain the current corona virus pandemic. However, the effects of UV-C radiation on materials and coatings are often unknown.Here, UV-C test equipment supports the improvement of methods for testing coatings. © AtlasWith irradiation centered on 254 nm wavelength, the influence of disinfection measures can be simulated by UV-C radiation.

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Section: Uv Testingmentioning

confidence: 99%

Testing the Effects of UV-C Radiation on Materials

McGreer¹

2021

Int Surf Technol

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“…Iriving et al, studied the degradation caused by UV-C sterilization on flexible endoscopes and concluded that 405 nm radiation is a safer alternative [42]. Geldert et al studied the effects of UV-C on N95 respirators [43].…”

Section: Introductionmentioning

confidence: 99%

Aging of 3D Printed Polymers under Sterilizing UV-C Radiation

et al. 2021

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In the context of the COVID-19 pandemic, shortwave ultraviolet radiation with wavelengths between 200 nm and 280 nm (UV-C) is seeing increased usage in the sterilization of medical equipment, appliances, and spaces due to its antimicrobial effect. During the first weeks of the pandemic, healthcare facilities experienced a shortage of personal protective equipment. This led to hospital technicians, private companies, and even members of the public to resort to 3D printing in order to produce fast, on-demand resources. This paper analyzes the effect of accelerated aging through prolonged exposure to UV-C on mechanical properties of parts 3D printed by material extrusion (MEX) from common polymers, such as polylactic acid (PLA) and polyethylene terephthalate-glycol (PETG). Samples 3D printed from these materials went through a 24-h UV-C exposure aging cycle and were then tested versus a control group for changes in mechanical properties. Both tensile and compressive strength were determined, as well as changes in material creep properties. Prolonged UV-C exposure reduced the mechanical properties of PLA by 6–8% and of PETG by over 30%. These findings are of practical importance for those interested in producing functional MEX parts intended to be sterilized using UV-C. Scanning electron microscopy (SEM) was performed in order to assess any changes in material structure.

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“…UV-C radiation with wavelengths below 280 nm is potentially more harmful than UV-A and UV-B, but is mostly filtered by atmospheric gases, the most important of which is ozone. However, nowadays, when UV-C radiation is used as disinfection increasingly, study of the radiation on effect materials and their properties is very important [4].…”

Section: Introductionmentioning

confidence: 99%

Degradation of Electrical Wire Sheaths By UV Radiation

Pastierová

Godovčin

2021

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

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The objective of this manuscript is to report experimental results concerning the effect of accelerated UV-C ageing on the properties of samples of halogen-free sheaths of power cables. Two samples of halogen free sheaths of power cables of Vuki a.s. CHKE-V E30 and Nexans 273-K3 HERP/CWB/2SZH were studied after exposition on the UV-C radiation in a closed chamber. Degradation was monitored by the change in infrared spectra of the samples, their hardness and colour. Based on the observed changes, it can be argued that exposure to the UVC radiation affects the observed properties on the surface of the studied samples. All the observed changes were due to the rupture of the bonds towing to the absorption of UV-C radiation.

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A comparison study of the degradative effects and safety implications of UVC and 405 nm germicidal light sources for endoscope storage

Cited by 28 publications

References 37 publications

Testing the Effects of UV-C Radiation on Materials

Testing the Effects of UV-C Radiation on Materials

Aging of 3D Printed Polymers under Sterilizing UV-C Radiation

Degradation of Electrical Wire Sheaths By UV Radiation

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