Surface roughness and color characteristics of wood treated with preservatives after accelerated weathering test

Temiz, Ali; Yıldız, Ümit Cafer; Aydın, İsmail; Eikenes, Morten; Alfredsen, Gry; Çolakoğlu, Gürsel

doi:10.1016/j.apsusc.2004.12.019

Cited by 133 publications

(108 citation statements)

References 8 publications

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“…It was observed that, for both dye types, total color differences (ΔE*) of Scots pine wood were higher than those of Oriental beech wood after 50, 100, and 150 h of exposure. The roughness of color stability in wood is a complex phenomenon affected by wood being an anisotropic and heterogeneous material along with various factors such as anatomical differences, growing characteristics, machining properties of the wood, and pre-treatments (e.g., steaming, drying) (Temiz et al 2005). Exactly the same ΔE* values were found with the same dyestuff and same wood type, which indicated close agreement in color changes values.…”

Section: Resultssupporting

confidence: 69%

“…The average color change values were found to be different between each wood types. This is caused by the chemical formation difference between the tree groups (soft/hard) (Temiz et al 2005;Sogutlu and Sonmez 2006;Peker et al 2012). However, color change in the wood is known to result from many factors, and such factors include such complicated processes as heterogonous anatomical structure of the wood, the conditions of the place where they are grown, handling conditions, and whether pre-treatment is applied (Temiz et al 2005;Peker et al 2012).…”

Section: Discussionmentioning

confidence: 99%

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Colorability of Wood Material with Punica granatum and Morus nigra Extracts

et al. 2014

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The aim of this study was the development of an eco-friendly dye that may be used in furniture, woodworking, and upper surface treatment, with no ill effects to human health. The plant dyestuff was extracted from pomegranate skin (Punica granatum) and black mulberry (Morus nigra) using an ultrasonic method at different rates. The extraction percentage ratios were, by weight in distilled water, 25%, 30%, 35%, 40%, 45%, and 50% and were applied to Scotch pine (Pinus sylvestris L.) and Oriental beech (Fagus orientalis L.) through an immersion method. After that, the determination of color change under the accelerated weathering conditions and the feasibility as the upper surface stain of this dyestuff were studied. The values of total color change of the natural dye samples that were applied to the test material were determined after accelerated weathering processes lasting 50, 100, and 150 h, according to ISO 2470. The results showed the best color stability in Oriental beech wood that was treated with 30% pomegranate skin or black mulberry extract as well as Scotch pine wood that was treated with 25% pomegranate skin extract or 50% black mulberry extract. Exactly the same ΔE* values were obtained with the same dyestuff and same wood type, indicating close color stability behaviors. According to the results, both pomegranate skin (Punica granatum) and black mulberry (Morus nigra) can be used to color wood materials.

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Section: Resultssupporting

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Colorability of Wood Material with Punica granatum and Morus nigra Extracts

et al. 2014

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“…Numerosos trabajos científicos, tales como los de Chang et al (2010), Tovaj y Varga (2012) y Huang et al (2012) han sido dirigidos hacia la predicción del comportamiento de la madera y materiales a base de madera en exteriores, realizando para ello ensayos de envejecimiento artificial o acelerado por medio de cámaras climáticas, no obstante, los ensayos de campo (envejecimiento natural) son más realistas aunque mucho más lentos, ya que se exponen las muestras a condiciones más cercanas al uso práctico, como los presentan diversos autores, tales como Valverde y Moya (2010), Mattos et al (2013) Tomak et al (2014), los cuales evaluaron maderas de frondosas provenientes respectivamente de Brasil, Japón, Costa Rica y Turquía. Además, se han evaluado los tratamientos empleados sobre las muestras como en Temiz et al (2005), Silva et al (2007) y Huang et al (2012. Sin embargo, aun siendo especies de gran importancia comercial, se encuentran en menor porcentaje los estudios sobre especies de rápido crecimiento del género Eucalyptus (Mattos et al 2013).…”

Section: Introductionunclassified

Color de la madera de dos eucaliptos expuestas al intemperismo natural en tres entornos ambientales diferentes

Delucis

Herrera²,

Labidi³

et al. 2016

Maderas, Cienc. tecnol.

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RESUMENLa degradación superficial en madera de exteriores se debe a una combinación de factores meteorológicos inherentes al entorno de exposición y a la colonización de organismos xilófagos. Desde un punto de vista técnico y económico se trata de uno de los principales problemas para la industria de productos y materiales hechos a partir de la madera. El objetivo del presente trabajo es el de monitorizar la degradación superficial de las maderas de Corymbia citriodora y Eucalyptus tereticornis originarias de plantaciones de rápido crecimiento de Brasil, las cuales han sido expuestas a ensayos de intemperismo natural en tres entornos ambientales distintos. La monitorización de los cambios en el material fue realizada mediante estimaciones del color (método CIEL*a*b*), en ciclos de 45 días, hasta completar un periodo de 360 días de exposición. Los resultados mostraron que el material expuesto al entorno forestal fue menos afectado por los factores ambientales, lo que ha sido probablemente debido al aislamiento térmico y solar que proporciona este tipo de ecosistema. A su vez, se observó que las probetas de madera de Corymbia citriodora presentaron mayor resistencia al deterioro que las probetas de madera de Eucalyptus tereticornis, posiblemente debido a ciertas diferencias en su constitución química.Palabras clave: Biodegradación, biodeterioro, Corymbia citriodora, Eucalyptus tereticornis, fotodegradación. ABSTRACTSurface degradation in outdoor wood and products is due to a combination of inherent climate factors together with colonization of decay organisms. From a technical and economic standpoint it is one of the main problems for the industry of products and materials made from wood. The aim of this work is to track the surface degradation of Corymbia citriodora and Eucalyptus tereticornis timbers originating from fast-growing plantations in Brazil, which have been exposed to outdoor weathering tests in three different environmental conditions. Changes in the material were monitoring using color measurement (CIEL*a*b* method), in cycles of 45 days up to a period of 360 days of exposure. The results showed that timber exposed to a forest ecosystem was less affected by environmental factors; this is probably due to climate insulation provided by these ecosystems. Besides, it was observed that samples of Corymbia citriodora had higher resistance to degradation compared with samples of Eucalyptus tereticornis, possibly due to differences in its chemical constitution.

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“…Segundo Temiz et al (2005), a descoloração da madeira exposta à luz solar ocorre devido à modificação de grupos cromóforos capazes de absorver a radiação ultravioleta no comprimento de onda entre 300 e 400 nm.…”

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ENVELHECIMENTO ARTIFICIAL ACELERADO POR RADIAÇÃO ULTRAVIOLETA DE MADEIRAS DE Eucalyptus benthamii E Pinus caribaea var. hondurensis

Martins¹,

Santos²,

Gonçalez³

et al. 2011

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ResumoEste trabalho teve como objetivo avaliar os processos de fotodegradação da cor superficial de duas espécies de madeiras, Pinus caribaea var. hondurensis e Eucalyptus benthamii, ao longo do tempo de exposição à radiação ultravioleta em um reator fotoquímico. As amostras de P. caribaea var. hondurensis foram avaliadas na face radial, enquanto que as de Eucalyptus benthamii na face tangencial. As medidas dos parâmetros colorimétricos, segundo o Sistema CIELAB 1976 (L*, a*, b*, C, e h*), foram obtidas por meio de um espectrofotocolorímetro, em intervalos de tempo de 0, 42, 84, 126 e 168 horas. Ambas as espécies apresentaram um escurecimento ao longo do tempo, principalmente nas primeiras horas de exposição. A madeira de E. benthamii apresentou uma maior variação de cor (∆E = 19,72) que a madeira de P. caribaea var. hondurensis (∆E = 17,82) após as 168 horas. Palavras-chave: Envelhecimento acelerado; colorimetria; madeira; eucalipto; pínus. Abstract Accelerated artificial aging by ultraviolet irradiation of Eucalyptus benthamii and Pinus caribaea var. hondurensis woods.The main objective of this research was to study the photo degradation process of superficial color of two wood species, Pinus caribaea var. hondurensis and Eucalyptus benthamii, over ultraviolet irradiation exposure time in a photochemical reactor. Pinus caribaea var. hondurensis samples were evaluated in the radial plane, while Eucalyptus benthamii samples were in tangential plane. The colorimetric parameters measures under the CIELAB 1976 system (L*, a*, b*, C, e h*) were obtained using a Spectophotometer, in the following time intervals: 0, 42, 84, 126 and 168 hours. Both species presented darkening over time, especially in the first hours of exposure. The E. benthamii wood had more changes in its color parameters (∆E=19.72) than P. caribaea var. hondurensis wood (∆E=17.82) after 168 hours.

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Surface roughness and color characteristics of wood treated with preservatives after accelerated weathering test

Cited by 133 publications

References 8 publications

Colorability of Wood Material with Punica granatum and Morus nigra Extracts

Colorability of Wood Material with Punica granatum and Morus nigra Extracts

Color de la madera de dos eucaliptos expuestas al intemperismo natural en tres entornos ambientales diferentes

ENVELHECIMENTO ARTIFICIAL ACELERADO POR RADIAÇÃO ULTRAVIOLETA DE MADEIRAS DE Eucalyptus benthamii E Pinus caribaea var. hondurensis

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