Effect of thermal treatment on the physical properties of GG100 clone Eucalyptus wood

ABSTRACT Thermal treatment can modify undesirable characteristics of some woods, dimensional instability, and excessive water adsorption. The present research work aimed to assess the effect of thermal treatment on the physical properties of clone GG100 Eucalyptus wood. Wood samples were obtained from 9 year-old trees. Samples were subjected to three types of thermal treatment (T1, T2, and T3). In T1, the wood was kept in a laboratory kiln at 100 °C for 180 min. In T2, hydrothermal treatment was performed in an autoclave at 120 °C for 120 min. In T3, the combined autoclave and laboratory kiln treatments were employed. The properties evaluated were apparent density (ρa); mass loss (ML); longitudinal (βl), radial (βr), tangential (βt), and volumetric shrinkage (βv); anisotropic factor; and equilibrium moisture content. The treatments caused a decrease of ρa and increase of ML. The Equilibrium Moisture Content (EMC) was lowest for T3, and had a negative correlation with ML, βt, and ∆v. The Pearson correlation analysis indicated the results of the thermal treatments were similar, but T1 presented the lowest variation of the physical properties compared to the other treatments, giving it the best predictability for practical uses.

Bibliographic Details

Main Authors:	Batista,Felipe Gomes, Medeiro,Dayane Targino de, Mascarenhas,Adriano Reis Prazeres, Mendes,Lourival Marin, Silva,Danilo Wisky, Farias,Daniel Tavares de, Pimenta,Alexandre Santos, Rodolfo Junior,Francisco, Paula,Edgley Alves de Oliveira, Melo,Rafael Rodolfo de
Format:	Digital revista
Language:	English
Published:	Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro 2022
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762022000300224
Tags:	Add Tag No Tags, Be the first to tag this record!