Thermal Modification Improves the Durability of Daniellia oliveri Wood
Issah Chakurah, Prosper Mensah, John Mensah-Bankz, Alexandre Santos Pimenta, Rafael Rodolfo de Melo, Francis Kofi Bih, Catherine Acquaye, Stephen Jobson Mitchual, James Amponsah, Martina Nikoi, Emmanuel Minkah, Priscila Lira de Medeiros
http://dx.doi.org/10.1590/2179-8087-FLORAM-2025-0013
FLORAM, vol.32, n3, e20250013, 2025
Abstract
Wood has long been one of the most widely utilized natural building materials. This study investigated the effect of thermal modification on the durability of Daniellia oliveri wood through laboratory and field decay tests. Five mature trees were selected and felled for the experiment. Wood samples were prepared and subjected to thermal treatment at 160, 180, and 200°C for three hours. The heartwood recorded a mass loss of 25.58% for the untreated wood, while the sapwood showed a slightly higher mass loss of 26.23%. Specimens treated at 200°C had the highest resistance to mass loss, with 7.08% for the heartwood and 8.73% for the sapwood. Similar trends were observed in the mass loss measured after exposure in the field, where mass loss decreased as the temperature increased. Thermal modification enhanced the resistance of D. oliveri wood, thereby increasing its durability and broadening its applications.
Keywords
Thermally modified heartwood; sapwood; fungi; wood decay test; mass loss
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Submetido em:
19/05/2025
Aceito em:
03/08/2025
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