IMPACT OF THERMAL MODIFICATION ON SOME SELECTED PHYSICAL AND MECHANICAL PROPERTIES OF Daniellia oliveri WOOD
DOI:
10.31413/nat.v12i3.17742Palavras-chave:
lesser-used species (LUS), volumetric swelling, moisture content, modulus of elasticity, modulus of ruptureResumo
The field of eco-friendly wood preservation, particularly the potential of thermal modification, is an area that demands immediate attention. There is an urgent need to promote the use of lesser-known timber species. This task requires filling the gap in research by evaluating the impact of thermal modification on the physical properties of a Ghanaian lesser-known timber species (Daniellia oliveri) wood. The study, which adopted an experimental research design, involved selecting and harvesting five samples of D. oliveri trees from the Du-West community. The study revealed that the specimens' moisture content (MC) drastically reduces as the modification temperature increases, with a similar trend observed for the density of the specimens. Volumetric Swelling (VS) and Water Absorption (WA) decreased as temperature increased. Moreover, as the modification temperature increased, the mechanical properties decreased.
Keywords: lesser-used species (LUS); volumetric swelling; moisture content; modulus of elasticity; modulus of rupture.
O impacto da modificação térmica em algumas propriedades físicas e mecânicas selecionadas da madeira de Daniellia oliveri
RESUMO: O campo da preservação ecológica da madeira, particularmente o potencial de modificação térmica, é uma área que exige atenção imediata. Há uma necessidade urgente de promover a utilização de espécies madeireiras menos conhecidas. Esta tarefa exige preencher a lacuna na investigação, avaliando o impacto da modificação térmica nas propriedades físicas da madeira de uma espécie madeireira menos conhecida do Gana (Daniellia oliveri). O estudo, que adotou um desenho de pesquisa experimental, envolveu a seleção e colheita de cinco amostras de árvores de D. oliveri da comunidade Du-West. O estudo revelou que o teor de umidade (MC) das amostras reduz drasticamente à medida que a temperatura de modificação aumenta, com tendência semelhante observada para a densidade das amostras. O inchaço volumétrico (VS) e a absorção de água (WA) diminuíram com o aumento da temperatura. Além disso, à medida que a temperatura de modificação aumentou, as propriedades mecânicas diminuíram.
Palavras-chave: espécies menos utilizadas (LUS); inchaço volumétrico; teor de umidade; módulo de elasticidade; módulo de ruptura.
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