Thermal modification of Eucalyptus grandis wood: Variation of colorimetric parameters

Authors

  • Pedro Henrique González de Cademartori Federal University of Pelotas
  • Eduardo Schneid Federal University of Santa Maria
  • Darci Alberto Gatto Federal University of Pelotas
  • Diego Martins Stangerlin Federal University of Mato Grosso
  • Rafael Beltrame Federal University of Pelotas

Keywords:

heat treatment, wood modification, colorimetry, heartwood

Abstract

The color modifications in Eucalyptus grandis thermally modified wood were investigated. One hundred eighty specimens (10 x 10 x 200 mm) were prepared and thermally modified in an electric kiln for 4 and 8 h at 180-240ºC. The color parameters (L*, a*, b*, C*, h* and ΔE) were determined by the CIE-L*a*b* method on radial and tangential sections of untreated and treated wood. The results indicated the darkening of specimens in the radial and tangential sections. Both sections showed variation of L* between 73 and 30, a* between 9 and 5 and b* between 20 and 8. The thermally modified wood at 180 and 200ºC showed similar patterns, equally at 220 and 240ºC. The time of exposure indicated significance just in treatment at 200ºC.

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Author Biographies

Pedro Henrique González de Cademartori, Federal University of Pelotas

College of Materials Engineering, Technology Development Center (CDTec), Federal University of Pelotas, Brazil.

Eduardo Schneid, Federal University of Santa Maria

College of Forest Engineering, Department of Forest Science, Rural Science Center, Federal University of Santa Maria, Brazil.

Darci Alberto Gatto, Federal University of Pelotas

College of Wood Industrial Engineering, Engineering Center, Federal University of Pelotas, Brazil.

Diego Martins Stangerlin, Federal University of Mato Grosso

Institute of Agricultural and Environmental Sciences, Federal University of Mato Grosso, Brazil.

Rafael Beltrame, Federal University of Pelotas

College of Wood Industrial Engineering, Engineering Center, Federal University of Pelotas, Brazil.

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Published

2025-11-05

How to Cite

González de Cademartori, P. H., Schneid, E., Gatto, D. A., Martins Stangerlin, D., & Beltrame, R. (2025). Thermal modification of Eucalyptus grandis wood: Variation of colorimetric parameters. Maderas. Ciencia Y Tecnología, 15(1), 57–64. Retrieved from https://revistas.ubiobio.cl/index.php/MCT/article/view/1276

Issue

Vol. 15 No. 1 (2013)

Section

Article

License

Copyright (c) 2015 Pedro Henrique González de Cademartori, Eduardo Schneid, Darci Alberto Gatto, Diego Martins Stangerlin, Rafael Beltrame

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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