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FTIR and color change of the modified wood as a result of artificial light irradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
29770 44439 2010 6 PDF Available
Title
FTIR and color change of the modified wood as a result of artificial light irradiation
Abstract

The effect of UV–visible light irradiation on the changes in color and chemical composition of the surfaces of Abies alba L. (fir, a softwood), non-modified and chemically modified, was studied. Chemical modification of the wood was performed by reaction with succinic anhydride in xylene at different concentration values. The wood samples were irradiated in air using a rotative device equipped with a middle pressure mercury lamp.Analysis of the color changes in wood surfaces during photo-degradation was carried out by measuring CIELAB parameters. Fourier transform infrared spectroscopy was used to study chemical changes caused by light irradiation. Irradiation modified physical and chemical characteristics of wood surfaces and resulted in rapid color changes, degradation of lignin and increased content of chromophoric groups on the wood surfaces. Color changes (ΔEab) correlate well with degradation of lignin.

Keywords
Wood; Chemical modification; Succinic anhydride; Photo-degradation; CIELAB parameters; FTIR spectroscopy
First Page Preview
FTIR and color change of the modified wood as a result of artificial light irradiation
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 99, Issue 3, 1 June 2010, Pages 144–149
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering