Measurement of photodegradation-caused roughness of wood using a new optical method

Laszlo Tolvaj, Zsolt Molnar, Endre Magoss

Research output: Contribution to journalArticle

10 Citations (Scopus)


The aim of this study was to clarify the intensity of the surface roughening of wood caused by light radiation using a fast optical method. The samples were irradiated by mercury lamp and the roughness change was monitored traditionally using a perthometer. The infrared (IR) diffuse reflectance spectrum was measured and the baseline shift was found to be a proper parameter to monitor the roughening effect of photodegradation. Linear correlation was found between the traditionally measured roughness and the baseline shift. This newly developed optical method is able to detect the degradation difference between earlywood and latewood. Some of the samples were immersed in distilled water for a day after an all light irradiation period of two days. This new baseline shift method was able to visualise and determine the small change in roughness caused by the leaching effect of water.

Original languageEnglish
Pages (from-to)23-26
Number of pages4
JournalJournal of Photochemistry and Photobiology B: Biology
Publication statusPublished - May 5 2014


  • Baseline shift
  • Infrared spectrum
  • Photodegradation
  • Roughness
  • Wood

ASJC Scopus subject areas

  • Radiation
  • Radiological and Ultrasound Technology
  • Biophysics
  • Radiology Nuclear Medicine and imaging

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