Effect of Substrates on Action Spectra of Fading of a Selected Disperse Dyestuff under Light Radiation

Imaizumi, Akira; Yoshizumi, Kunio

doi:10.1177/0040517506070056

Cited by 5 publications

(5 citation statements)

References 40 publications

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“…The action spectrum for fading Disperse Blue dye was recently reported and showed a maximum colour difference (DE) in the wavelength 262 nm or 310 nm depending on the substrate fibre. 15 However, action spectra for textile dyes are sparse in the literature.…”

Section: Susceptibility Of Plastics and Wood To Solar Uv-b Radiationmentioning

confidence: 99%

Effects of solar UV and climate change on materials

Andrady

Hamid

Torikai³

2011

Photochem Photobiol Sci

120

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Increased solar ultraviolet radiation (UV) reaches the surface of the Earth as a consequence of a depleted stratospheric ozone layer and changes in factors such as cloud cover, land-use patterns and aerosols. Climate change is expected to result in a 1.1-6.4 °C increase in average temperature by the end of this century, depending on location. Increased levels of UV radiation, especially at high ambient temperatures, are well-known to accelerate the degradation of plastics, rubber and wood materials, thereby reducing their useful lifetimes in outdoor applications. Plastics used routinely outdoors are generally light-stabilized using chemical additives to ensure their useful lifetimes. Wood products are coated for resistance to UV radiation, since photodamage results in enhanced water-susceptibility and their consequent biodegradation under outdoor exposure. The increased damage to materials due to an increased UV-B (280-315 nm) component in solar radiation reaching the Earth likely can be countered using light-stabilization technologies, surface coatings or, in most instances, by substituting the materials in question with greater UV radiation-resistant materials. However, even if these options could be used with all common materials affected, they will invariably result in higher costs. Reliable estimates of the incremental costs involved depend on the anticipated damage and the effectiveness of mitigation strategies employed. We summarize and assess recent findings on light-induced damage to plastic materials, including wood-plastics composites and nanocomposites. The combined effect of increased UV-B radiation and ambient temperature is of special interest, since these two factors represent particularly harsh environmental conditions for most materials. Advances in approaches to light stabilization of materials are also assessed.

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Section: Susceptibility Of Plastics and Wood To Solar Uv-b Radiationmentioning

confidence: 99%

Effects of solar UV and climate change on materials

Andrady

Hamid

Torikai³

2011

Photochem Photobiol Sci

120

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“…Erythema weighted transmittance (EWT) for a fabric can also be designated as a factor reflecting the protection offered by it. EWT is shown as percentage and is inverse of UPF (i-e EWT 5 1/UPF).So, higher the EWT, lower will be UV protection offered by that material (Imaizumi and Yoshizumi, 2006). Fading of dyed textile fabric, after exposure to UVR passing from a test material, can also be used to measure the barrier properties of the test material (Todorova and Vassileva, 2003).…”

Section: Protection From Uvrmentioning

confidence: 99%

“…UV protective clothing should be used in all situations where an exposure to any of UV types is expected to occur: teenagers, outdoor workers, sportsmen, people dealing with advertising lamps and lightning, hardening plastics, sterilization equipments, medical care, currency note authentication lights and industrial welding (Stankovic et al, 2009, Imaizumi andYoshizumi, 2006).…”

Section: Who Should Use Uv Protective Clothing?mentioning

confidence: 99%

“…However, another study revealed that this may not be true in all the cases as plain and twill weaves were found to have inferior UPF even at 88% cover factor (Polona and Miran, 2009). So, effect of cover factor depends on type of weave, yarn fineness and raw material (Imaizumi and Yoshizumi, 2006). At lower cover factors effect of all other parameters on UPF become almost negligible (Helena et al, 2009).…”

Section: Protection From Uv Radiation Through Clothingmentioning

confidence: 99%

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A review of UV radiation protection on humans by textiles and clothing

Khan

Nazir

Rehman

et al. 2020

IJCST

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PurposeThis review deals with the pros and cons of ultraviolet (UV) radiation on human beings and the role of textile clothing and the chemicals used for textiles to protect from their harmful effects.Design/methodology/approachUV radiation (UVR) which has further divided into UVA, UVB, and UVC. Almost 100% of UVC and major portion of UVB are bounced back to stratosphere by ozone layer while UVA enters the earth atmosphere. Excessive exposure of solar or artificial UVR exhibit potential risks to human health. UVR is a major carcinogen and excessive exposure of solar radiation in sunlight can cause cancer in the lip, skin squamous cell, basal cell and cutaneous melanoma, particularly in people with the fair skin.FindingsThis article aims to provide a comprehensive overview of the harmful effects of UVR on human skin, factors affecting UV irradiance and factors affecting UV protection offered by textile clothing.Originality/valueEffect of fiber properties, yarn properties, fabric construction, fabric treatments and laundering has been reviewed along with the identification of gaps in the reported research. A comparison of inorganic and organic UV absorbers has also been given along with different testing and evaluation methods for UV protective clothing.

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“…Light exposures were conducted at temperature and relative humidity ranging from 20˚C to 25˚C and from 50% to 70%, respectively. These systems were also used in previous experiments published elsewhere [33][34][35].…”

Section: Exposure To Light Sourcesmentioning

confidence: 99%

Degradation of Japanese Lacquer under Wavelength Sensitivity of Light Radiation

Nakagoshi¹,

Yoshizumi

2011

MSA

Self Cite

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Degradation of Japanese lacquer caused by light irradiation was examined at various wavelengths. By exposing lacquer specimens to a narrow monochromatic light band isolated from dispersed polychromatic light emitted by a Xe lamp source, the wavelength sensitivity characteristics of lacquer degradation could be determined on the basis of radiant energy. Tame-Urushi (brown) lacquer displayed peak degradation maxima at 220 and 315 nm. A broad shoulder peak was also observed in UVA. For Shu-Urushi (cinnabar) lacquer, in addition to peaks in the UVA–UVB range, a large degree of degradation was observed following exposure to light in the visible range. Ao-Urushi (green) lacquer showed similar characteristics, although it was less prone to degradation. Similarly, Shin-Urushi (black) lacquer showed little change in response to light, although UV light caused limited degradation. These results indicate that along with the damage caused by UVA and UVB, visible light in the range 510 - 650 nm may also have a significant degradation effect. Our results provide experimental evidence that Japanese lacquer responds differently to light of various wavelengths and that specific wavelengths, including visible light, can cause significant degradation

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Effect of Substrates on Action Spectra of Fading of a Selected Disperse Dyestuff under Light Radiation

Cited by 5 publications

References 40 publications

Effects of solar UV and climate change on materials

Effects of solar UV and climate change on materials

A review of UV radiation protection on humans by textiles and clothing

Degradation of Japanese Lacquer under Wavelength Sensitivity of Light Radiation

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