Chemical changes of beech wood due to CO2 laser irradiation

被引：49

作者：

Kacik, Frantisek ^{[1
]}

Kubovsky, Ivan ^{[2
]}

机构：

[1] Tech Univ Zvolen, Dept Chem & Chem Technol, Fac Wood Sci & Technol, Zvolen 96053, Slovakia

[2] Tech Univ Zvolen, Dept Phys Elect Engn & Appl Mech, Fac Wood Sci & Technol, Zvolen 96053, Slovakia

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2011年 / 222卷 / 01期

关键词：

Beech; Lignin; Cellulose; Hemicelluloses; LASER; Irradiation dose; FTIR spectroscopy; Carbohydrates; THERMALLY MODIFIED WOOD; SPRUCE WOOD; UV LASER; FT-IR; LIGNIN; DEGRADATION; PHOTODEGRADATION; DISCOLORATION; SPECTRA;

D O I：

10.1016/j.jphotochem.2011.05.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The paper deals with color changes and wood component changes caused by laser beam irradiation. A 500 mm x 150 mm x 15 mm beech (Fagus sylvatica, L) board was irradiated by the CO2 laser beam at different exposures (expressed as the irradiation dose). The color changes were measured by the spectrophotometer and described in the CIELAB color system. Changes in the main wood components were observed by the Fourier transform infrared spectroscopy (FTIR) and carbohydrates were analysed by the gas chromatography of their aldonitrilacetates. With increasing the irradiation dose (from 14 to 57J cm(-1)) was observed a continual growth of the total color difference (Delta E*). Predominantly hemi-celluloses degradation was observed, while at a higher energy dosage lignin condensation occurred. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：105 / 110

页数：6

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