Influence of UV Radiation on the Color Change of the Surface of Steamed Maple Wood with Saturated Water Steam

Dzurenda, Ladislav; Dudiak, Michal; Výbohová, Eva

doi:10.3390/polym14010217

Cited by 12 publications

(15 citation statements)

References 23 publications

(33 reference statements)

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“…The authors [ 5 ] state that the colour differences of polyurethane surface finish on Oriental beech, before and after 250 h of accelerated weathering, was 18.30, which was a “Different colour”. The paper [ 27 ] reports “Colour difference visible with medium quality screen” for oil surface finishes on European maple wood after accelerated simulation in the dark. The tested surface finish on untreated Paper birch wood showed “Colour difference visible with medium quality screen”.…”

Section: Resultsmentioning

confidence: 99%

“…The different behaviour of the wood species studied may be related to the differences in their chemical composition, especially lignin and extractives content. Wood extractives are an important factor affecting wood colour, while also playing an important role in the wood photodegradation process [ 23 , 26 , 27 , 28 ]. Different sizes of colour differences of the surface finish in the dark from those in the light point to the significant influence of light.…”

Section: Resultsmentioning

confidence: 99%

“…But we know from practice that not always the entire surface of a wood product (e.g., floor, shelf, table) is exposed to light. Many scientific works deal with the change in wood colour [ 22 , 23 , 24 , 25 , 26 , 27 ] or the change of surface finishes on wood in the interior due to the influence of light [ 17 , 28 , 29 , 30 ] or after accelerated weathering [ 9 , 13 , 31 , 32 , 33 , 34 , 35 , 36 ]. However, the effect of visible light from short waves (violet-blue) and the thermic effect of the infrared components of natural light passing through window glass [ 36 , 37 , 38 ] have to be considered as indoor ageing factors [ 25 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Two Different Ageing Exposures on the Colour Stability of Transparent Polyurethane Finishing

2023

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This paper deals with the influence of dark and light exposure on the colour change of a transparent two-component polyurethane surface finish. The surface finish with polyacrylic and aldehyde resin was applied to the surfaces of untreated and hydrothermally treated European beech, alder, Norway maple, and Paper birch wood. The test specimens were deposited indoors for 60 days. The colour values (lightness L*, redness + a*, yellowness + b*, chroma C*, hue angle h°) were expressed in the CIELAB system. The results showed that the colour difference of the finish surfaces of all hydrothermally treated wood species was 27–50% lower after the dark than when exposed to light. In the case of finished untreated wood, the colour difference was 51–73% lower after the dark than light exposure. Only the finished untreated and hydrothermally treated Norway maple wood surfaces showed similar and significant changes after both dark and light exposure. The lower value of the colour difference of the finished hydrothermally treated wood was due to the fact that steaming wood with saturated water steam has a positive effect on the overall colour stability of the finish and partial resistance to the initiation of photolytic reactions caused by light.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Two Different Ageing Exposures on the Colour Stability of Transparent Polyurethane Finishing

2023

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“…Further treatment of hardened surfaces with air saturated with steam at 95–135 °C enhances the colour stability of wood. For instance, change in surface colour after 298 h exposure to a xenon Weather-O-meter (simulates solar radiation with filtering systems designed for weathering) of untreated maple wood was reduced by 31.8, 43.8, and 61.1% with steam treatment at 95, 115, and 135 °C, respectively [ 100 ]. While thermal treatment improves the desirable characteristics of wood, the accompanying reduced outdoor lifetimes under solar UV irradiation needs to be controlled using cost-effective surface coatings for wider acceptance of the approach.…”

Section: Wood In Building Applicationsmentioning

confidence: 99%

Effects of UV radiation on natural and synthetic materials

Andrady

Heikkilä

Pandey³

et al. 2023

Photochem Photobiol Sci

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The deleterious effects of solar ultraviolet (UV) radiation on construction materials, especially wood and plastics, and the consequent impacts on their useful lifetimes, are well documented in scientific literature. Any future increase in solar UV radiation and ambient temperature due to climate change will therefore shorten service lifetimes of materials, which will require higher levels of stabilisation or other interventions to maintain their lifetimes at the present levels. The implementation of the Montreal Protocol and its amendments on substances that deplete the ozone layer, controls the solar UV-B radiation received on Earth. This current quadrennial assessment provides a comprehensive update on the deleterious effects of solar UV radiation on the durability of natural and synthetic materials, as well as recent innovations in better stabilising of materials against solar UV radiation-induced damage. Pertinent emerging technologies for wood and plastics used in construction, composite materials used in construction, textile fibres, comfort fabric, and photovoltaic materials, are addressed in detail. Also addressed are the trends in technology designed to increase sustainability via replacing toxic, unsustainable, legacy additives with ‘greener’ benign substitutes that may indirectly affect the UV stability of the redesigned materials. An emerging class of efficient photostabilisers are the nanoscale particles that include oxide fillers and nanocarbons used in high-performance composites, which provide good UV stability to materials. They also allow the design of UV-shielding fabric materials with impressive UV protection factors. An emerging environmental issue related to the photodegradation of plastics is the generation of ubiquitous micro-scale particles from plastic litter exposed to solar UV radiation. Graphical abstract

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“…Spectra ATR-FTIR analyses declared the influence of UV–VIS components of solar radiation on unsteamed and steamed beech wood, and confirmed the higher color stability of the steamed beech wood. Another study, conducted by Dzurenda et al [ 60 ], dealt with maple wood steamed with a saturated steam-air mixture to give a pale pink-brown, pale brown, and brown-red color. Subsequently, samples of unsteamed and steamed maple wood were irradiated with a UV lamp in a Xenotest after drying to test the color stability of the steamed maple wood.…”

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confidence: 99%