Scholarlink

Short-rotation teak wood (Tectona grandis L.f.) is composed of a higher proportion of sapwood than heartwood, giving the species heterogeneous color and natural durability. Thermal modification can be an alternative for improving these properties of teak wood from fast-growing forests. This study aimed to verify how colorimetric parameters correlate with mass loss caused by fungi, as an exploratory analysis for the development of wood durability prediction models based on colorimetry. Untreated and thermally modified wood were tested in closed system at 160 °C and in open system at 185 °C and 210 °C. For the fungi test, the white-rot Trametes versicolor and the brown-rot Coniophora puteana were used. Colorimetric analyses were carried out using the CIEL*a*b* system, using a portable spectrophotometer. Measurements were taken on the cross-section and the tangential surfaces of the specimens, both before and after the fungi test. The colorimetric coordinates L*, a*, and b* were measured and the parameters C* and h° were calculated. The correlation between the colorimetric parameters and mass loss was calculated considering the data obtained before and after the fungi test. A significance test was carried out for the correlation coefficient (r) and a scale was adopted for the qualitative assessment of the r. There were significant “strong” and “very strong” correlations between all the colorimetric parameters for both fungi. However, it was not possible to establish a method for developing biodeterioration prediction models based on colorimetry.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Correlation Between Color and Biodeterioration of Short-Rotation Thermally Modified Teak Wood

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Anna Clara Oliveira Rupf,
  • Kamilly da Silva Pereira,
  • Saulo José da Costa Lima,
  • Paulo Henrique dos Santos Silvares,
  • Jessica Sabrina da Silva Ferreira,
  • Jaqueline Rocha de Medeiros,
  • Adriano Ribeiro de Mendonça,
  • Juarez Benigno Paes,
  • Djeison Cesar Batista

摘要

Short-rotation teak wood (Tectona grandis L.f.) is composed of a higher proportion of sapwood than heartwood, giving the species heterogeneous color and natural durability. Thermal modification can be an alternative for improving these properties of teak wood from fast-growing forests. This study aimed to verify how colorimetric parameters correlate with mass loss caused by fungi, as an exploratory analysis for the development of wood durability prediction models based on colorimetry. Untreated and thermally modified wood were tested in closed system at 160 °C and in open system at 185 °C and 210 °C. For the fungi test, the white-rot Trametes versicolor and the brown-rot Coniophora puteana were used. Colorimetric analyses were carried out using the CIEL*a*b* system, using a portable spectrophotometer. Measurements were taken on the cross-section and the tangential surfaces of the specimens, both before and after the fungi test. The colorimetric coordinates L*, a*, and b* were measured and the parameters C* and h° were calculated. The correlation between the colorimetric parameters and mass loss was calculated considering the data obtained before and after the fungi test. A significance test was carried out for the correlation coefficient (r) and a scale was adopted for the qualitative assessment of the r. There were significant “strong” and “very strong” correlations between all the colorimetric parameters for both fungi. However, it was not possible to establish a method for developing biodeterioration prediction models based on colorimetry.