Effect of steaming on the colour change of softwoods

Laszlo Tolvaj, Gergely Papp, Denes Varga, Elemer Lang

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The heat treatment of softwood (i.e. spruce, pine, fir, and larch) may result in significant colour changes. During this study Scots pine and spruce samples were steamed and analysed for their altered hue and lightness. Treatments included: 0 to 22 days of steaming time at a temperature range of 70 to 100°C. The outcome included a variety of colours between the initial hues and brownish tint. These new colours are similar to that of aged furniture and indoor wooden structures. Consequently, properly steamed softwood may be used to repair historical artefacts and relic furniture. Besides restoration, steamed stocks are excellent sources for manufacture of periodical furniture, where the aged appearance has aesthetical value. Results however, indicated that steaming at a temperature above 90 °C has a bleaching effect, i.e. the coloured chemical components formed by moderate steaming may be removed. Furthermore, we observed a linear correlation between lightness and colour hue at all steaming times and temperatures.

Original languageEnglish
Pages (from-to)2799-2808
Number of pages10
JournalBioResources
Volume7
Issue number3
Publication statusPublished - Aug 1 2012

Keywords

  • Colour modification
  • Scots pine
  • Spruce
  • Steaming

ASJC Scopus subject areas

  • Environmental Engineering
  • Bioengineering
  • Waste Management and Disposal

Fingerprint Dive into the research topics of 'Effect of steaming on the colour change of softwoods'. Together they form a unique fingerprint.

  • Cite this

    Tolvaj, L., Papp, G., Varga, D., & Lang, E. (2012). Effect of steaming on the colour change of softwoods. BioResources, 7(3), 2799-2808.