A spectrocolorimetric and chemical study on color modification of heat-treated wood during artificial weathering

Huang, Xianai; Kocaefe, Duygu; Kocaefe, Yasar S.; Boluk, Yaman; Pichette, André

doi:10.1016/j.apsusc.2012.02.005

Cited by 96 publications

(89 citation statements)

References 13 publications

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“…Signals obtained between 2928 cm -1 and 3340 cm -1 correspond to functional groups of hydroxyl, coinciding with that reported by Li et al (2015) and Huang et al (2012) who indicated that bands between the range 3800-2750 cm -1 are assigned to hydroxyl and methyl groups or stretching vibrations of methylene, in the components of hemicellulose, lignin and cellulose.…”

Section: Analysis Of Ftir Spectra On the Surface Of Woodsupporting

confidence: 70%

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Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Méndez-Mejías¹,

Moya²

2016

Sci. For.

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Section: Analysis Of Ftir Spectra On the Surface Of Woodsupporting

confidence: 70%

“…Thermal-treated wood produces, as consequence, degradation of lignin and hemicellulose and a darkening in the color of wood, which is greater as temperature increases (HUANG et al, 2012).…”

Section: Wood Typementioning

confidence: 99%

Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Méndez-Mejías¹,

Moya²

2016

Sci. For.

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“…This corroborates with previous studies (Huang et al 2012a, Huang et al 2012b. Therefore, the anatomical direction variable can be rejected on a detailed analysis of changes to the color of decayed wood.…”

Section: Summary Of Multi-factor Anovasupporting

confidence: 77%

Decay resistance of four fast-growing Eucalypts wood exposed to three types of fields

Delucis

Cademartori

Missio

et al. 2016

Maderas, Cienc. tecnol.

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The evaluation of wood durability enables the definition of reliable parameters to predict the servicelife of wood-based products. This study aimed to evaluate the wood deterioration of four fast-growing eucalypts species (Eucalyptus botryoides, Corymbia citriodora, Eucalyptus paniculata e Eucalyptus tereticornis) exposed to three field tests (outdoor, flooded site and forest canopy) during 540 days. The physical properties measured were: mass loss, density and moisture content. Furthermore, we determined changes in wood color by CIEL*a*b* method and performed a visual analysis by CEN grades. Among the four wood eucalypts, Eucalyptus tereticornis presented the highest decay resistance. The flooded site presented the best conditions for the proliferation of xylophagous agents. Mature wood was least susceptible to deterioration than juvenile wood.

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“…Tomak et al (2014) and Yildiz et al (2013) observed that natural or accelerated weathering led to a reduction in compression strength, modulus of rupture (MOR), and modulus of elasticity (MOE) in thermally modified wood. Although the color stability and photostability of thermally modified wood has improved (Ayadi et al 2003;Nuopponen et al 2004;Dubey et al 2010;Huang et al 2012a;Huang et al 2013), the color of most thermally modified wood is lightened during UV exposure or solar irradiation (Srinivas and Pandey 2012;Huang et al 2012b;Tomak et al 2014). Yildiz et al (2013) investigated the color change during artificial weathering of four heat-treated wood species (ash, iroko, Scots pine, and spruce) at 200 °C and suggested that the protective effect of heat-treatment was lost during longer weathering exposures.…”

Section: Introductionmentioning

confidence: 99%

Influence of Post-extraction on Photostability of Thermally Modified Scots Pine Wood during Artificial Weathering

Shen¹,

Cao²,

Sun³

et al. 2016

BioResources

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The photo-stabilizing effect of post-extraction was evaluated for thermally modified wood. Extracted and non-extracted thermally modified Scots pine (Pinus sylvestris L.) samples were exposed in a xenon weather-ometer for 1008 h, and the surface color and chemical changes were characterized using a chroma meter, attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), and X-ray photoelectron spectroscopy (XPS). The results showed that: (1) the weight losses of thermally modified wood were higher than those of unmodified wood after extraction due to the leaching of some low molecular weight compounds that were generated during thermal modification; (2) the photodegradation of thermally modified wood during weathering was hindered by the presence of extractives; and (3) the color change during weathering was a little more severe in sapwood than in heartwood because more extractives were present in heartwood.

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A spectrocolorimetric and chemical study on color modification of heat-treated wood during artificial weathering

Cited by 96 publications

References 13 publications

Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Decay resistance of four fast-growing Eucalypts wood exposed to three types of fields

Influence of Post-extraction on Photostability of Thermally Modified Scots Pine Wood during Artificial Weathering

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