Document Detail


FTIR and color change of the modified wood as a result of artificial light irradiation.
MedLine Citation:
PMID:  20392648     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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 (DeltaE(ab)) correlate well with degradation of lignin.
Authors:
Dan Rosu; Carmen-Alice Teaca; Ruxanda Bodirlau; Liliana Rosu
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Publication Detail:
Type:  Journal Article     Date:  2010-03-27
Journal Detail:
Title:  Journal of photochemistry and photobiology. B, Biology     Volume:  99     ISSN:  1873-2682     ISO Abbreviation:  J. Photochem. Photobiol. B, Biol.     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-05-03     Completed Date:  2010-08-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804966     Medline TA:  J Photochem Photobiol B     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  144-9     Citation Subset:  IM    
Copyright Information:
2010 Elsevier B.V. All rights reserved.
Affiliation:
"Petru Poni" Institute of Macromolecular Chemistry, 41A Gr. Ghica-Voda Alley, Iasi 700487, Romania. drosu@icmpp.ro
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MeSH Terms
Descriptor/Qualifier:
Color*
Light*
Lignin / chemistry
Photolysis
Spectroscopy, Fourier Transform Infrared
Succinic Anhydrides / chemistry
Ultraviolet Rays*
Wood / chemistry,  radiation effects*
Chemical
Reg. No./Substance:
0/Succinic Anhydrides; 108-30-5/succinic anhydride; 9005-53-2/Lignin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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