BENDING QUALITY OF THREE BRAZILIAN HARDWOODS MODIFIED BY DIFFERENT HYDROTHERMAL TREATMENTS

• Autor(a) principal: Behenck Aramburu, Arthur
• Data de Publicação: 2022
• Outros Autores: Lemos de Peres , Matheus, de Avila Delucis , Rafael, Alberto Gatto , Darci
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Cerne (Online)
• Texto Completo: https://cerne.ufla.br/site/index.php/CERNE/article/view/3114
• topic: wood softening; wood bending; mechanical properties; microwave treatment; steam bending; Wood Science; physical properties of wood

Background: Boiling, steaming, and microwave radiation treatments were used for softening and then manufacturing curved samples using three Brazilian hardwoods. Solid wood samples from Carya illinoinensis, Luehea divaricata and Platanus x acerifolia were characterized for bending quality, bending defects, minimum radius of bending, spring-back and moisture content.Results: Among the studied woods, Carya illinoinensis wood was the most suitable to conform curved samples since 96.7% of these wood samples reached a perfect curved shape. On the other hand, Luehea divaricata wood presented the worst behaviour, which was marked by only 36.7% of samples achieving a perfect shape. In general, the studied hydrothermal treatments and exposuretimes induced similar softening behaviours.Conclusion: In this sense, microwave heating seems to be a good option when compared to the other pathways, since it is known that this method require low consumptions of both time and energy.