Colour stability of thermally modified wood during short-term photodegradation

L. Tolvaj, Robert Nemeth, Zoltan Pasztory, Laszlo Bejo, Peter Takats

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Dry thermal treatments of wood samples were carried out at 160 and 200 °C. After each treatment, the samples were irradiated using a strong UV emitter mercury lamp, and the colour change was then evaluated. For control, untreated samples were also irradiated using the same mercury lamp. Results showed that the extractive content of the wood played an important role in the colour change not only during thermal treatment but also during light irradiation. It was found that, compared to the thermally untreated samples, the thermal treatment at 200 °C reduced the red colour change due to photodegradation. The yellow colour change of photodegradation was hardly affected by the applied thermal treatments, showing that thermal treatments were not able to reduce the light degradation of lignin. The applied treatments slightly stabilized the wood against the degrading effect of light. The wood treated at lower temperature (160 °C) had less colour change induced by the light source.

Original languageEnglish
Pages (from-to)6644-6651
Number of pages8
JournalBioResources
Volume9
Issue number4
Publication statusPublished - 2014

Fingerprint

Photodegradation
photodegradation
Wood
Heat treatment
Color
Mercury vapor lamps
Lignin
lignin
Light sources
irradiation
thermal treatment
Irradiation
Degradation
degradation
Temperature
lamp
mercury

Keywords

  • Colour change
  • Extractives
  • Photodegradation
  • Thermal modification

ASJC Scopus subject areas

  • Waste Management and Disposal
  • Environmental Engineering
  • Bioengineering

Cite this

Tolvaj, L., Nemeth, R., Pasztory, Z., Bejo, L., & Takats, P. (2014). Colour stability of thermally modified wood during short-term photodegradation. BioResources, 9(4), 6644-6651.

Colour stability of thermally modified wood during short-term photodegradation. / Tolvaj, L.; Nemeth, Robert; Pasztory, Zoltan; Bejo, Laszlo; Takats, Peter.

In: BioResources, Vol. 9, No. 4, 2014, p. 6644-6651.

Research output: Contribution to journalArticle

Tolvaj, L, Nemeth, R, Pasztory, Z, Bejo, L & Takats, P 2014, 'Colour stability of thermally modified wood during short-term photodegradation', BioResources, vol. 9, no. 4, pp. 6644-6651.
Tolvaj L, Nemeth R, Pasztory Z, Bejo L, Takats P. Colour stability of thermally modified wood during short-term photodegradation. BioResources. 2014;9(4):6644-6651.
Tolvaj, L. ; Nemeth, Robert ; Pasztory, Zoltan ; Bejo, Laszlo ; Takats, Peter. / Colour stability of thermally modified wood during short-term photodegradation. In: BioResources. 2014 ; Vol. 9, No. 4. pp. 6644-6651.
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