Abstract
The aim of this study was to determine whether artificial ultraviolet (UV) light sources are able to imitate properly the photodegradation of wood caused by sunlight. In this study, wood specimens were irradiated with a xenon lamp and a mercury lamp. The xenon light simulated sunlight only in the case of long-term irradiation. The photoinduced yellowing of wood was faster and greater in the case of short-term exposure to xenon light than that caused by sunlight. The number of UV light-generated carbonyl groups absorbing infrared light around 1700 cm−1 showed good correlation with photoinduced yellowing. On the other hand, mercury light did not simulate sunlight. However, the mercury lamp, as a strong UV light emitter, can be applied to determine the valid limits of the Kubelka–Munk (K-M) equation. Our results show that the K-M equation cannot be applied to determine the absorption properties of the sample if the values of the K-M units exceed 50.
Article PDF
Similar content being viewed by others
References
Tolvaj L, Preklet E, Barta E, Papp G (2001) Dependence on light sources of the artificial photodegradation of wood. Workshop within COST action E-18, High Performance Wood Coatings, Paris http://www.vtt.fi/rte/bp/coste18/seminar2_paper3.pdf, cited on 18–19 June
M Ota H Ogata Y Jono K Hirota K Abe (1997) ArticleTitleLight-induced color changes of acetylated veneers of kiri (Paulowniatomentosa Steud.) (in Japanese) Mokuzai Gakkaishi 43 785–791
L Podgorski A Merlin X Deglise (1996) ArticleTitleAnalysis of the natural and artificial weathering of a wood coating by measurement of the glass transition temperature Holzforschung 50 282–287
K Mitsui H Takada M Sugiyama R Hasegawa (2001) ArticleTitleChanges in the properties of light-irradiated wood with heat treatment. Part 1. Effect of treatment conditions on the change in color Holzforschung 55 601–605
L Tolvaj O Faix (1995) ArticleTitleArtifical ageing of wood monitored by DRIFT spectroscopy and CIE L*a*b* color measurements. I. Effect of UV light Holzforschung 49 397–404
U Müller M Rätzsch M Schwanninger M Steiner H Zöbl (2003) ArticleTitleYellowing and IR-changes of spruce wood as result of UV-irradiation J Photochem Photobiol B 69 97–105
Németh K, Vanó V, Faix O (1992) The effect of wood extractives on the photo-degradation of wood. EWLP Conference, Grenoble, France, pp 191–192
DNS Hon (1991) Photochemistry of wood DNS Hon N Shiraishi (Eds) Wood and cellulosic chemistry Marcel Dekker New York 525–555
Y Kataoka M Kiguchi (2001) ArticleTitleDepth profiling of photo-induced degradation in wood by FT-IR microspectroscopy J Wood Sci 47 325–327
K Mitsui A Murata L Tolvaj (2003) ArticleTitleInvestigation of the change in the DRIFT spectra of light-irradiated wood with heat treatment Holz Roh Werkst 61 82
M Ohkoshi (2002) ArticleTitleFTIR-PAS study of light-induced changes in the surface of acetylated or polyethylene glycol-impregnated wood J Wood Sci 48 394–401
Y Sudiyani Y Imamura S Doi S Yamauchi (2003) ArticleTitleInfrared spectroscopic investigations of weathering effects on the surface of tropical wood J Wood Sci 49 86–92
E Zavarin SJ Jones LG Cool (1990) ArticleTitleAnalysis of solid wood surfaces by diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy J Wood Chem Technol 10 495–513
AJ Michell (1991) ArticleTitleAn anomalous effect in the DRIFT spectra of woods and papers J Wood Chem Technol 11 33–40
KK Pandey KS Theagarajan (1997) ArticleTitleAnalysis of wood surfaces and ground wood by diffuse reflectance (DRIFT) and photoacoustic (PAS) Fourier transform infrared spectroscopic techniques Holz Roh Werkst 55 383–390
L Tolvaj K Mitsui (2004) ArticleTitleSurface preparation and direction dependence of DRIFT spectra of wood Appl Spectrosc 58 1137–1140
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Tolvaj, L., Mitsui, K. Light source dependence of the photodegradation of wood. J Wood Sci 51, 468–473 (2005). https://doi.org/10.1007/s10086-004-0693-4
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s10086-004-0693-4