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Acetylation of wood causes photobleaching

Paper ID Volume ID Publish Year Pages File Format Full-Text
29987 44451 2010 5 PDF Available
Title
Acetylation of wood causes photobleaching
Abstract

This paper deals with the photobleaching of acetylated wood. The acetylated spruce wood was irradiated by artificial sunlight emitted from xenon lamp with covering several kinds of band-pass filter. The lightness (L*) of acetylated wood increased with integral irradiance. The chroma (ΔC*) decreased by light-irradiation with wavelength from 430 nm to 500 nm. However, the light-irradiation including ultraviolet ray region made it decrease after increase with integral irradiance. The visible light made hue angle (h°) increase, however, the ultraviolet ray made it decrease. The lignin degradation and the production of carbonyl groups were observed by light-irradiation including ultraviolet ray. However, no remarkable changes in IR spectra were observed by visible light-irradiation. Photobleaching of acetylated wood was caused by mainly visible light without modifying the IR spectra of lignin.

Keywords
Acetylation; Color; DRIFT spectroscopy; Photobleaching; Wood
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 101, Issue 3, 2 December 2010, Pages 210–214
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
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