SciELO - Scientific Electronic Library Online

 
vol.20 número4Encapsulation of precipitated calcium carbonate fillers using carboxymethyl cellulose /polyaluminium chloride: preparation and its influence on mechanical and optical properties of paperAnalysis of biological pretreatment of rapeseed straw with white rot fungi for enzymatic hydrolysis índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Maderas. Ciencia y tecnología

versión On-line ISSN 0718-221X

Resumen

BATISTA, Djeison Cesar et al. Effect of the Brazilian process of thermal modification on the physical properties of Eucalyptus grandis juvenile wood. Maderas, Cienc. tecnol. [online]. 2018, vol.20, n.4, pp.715-724. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2018005041701.

This study is a continuation of a previous study published in this journal, with the aim of evaluating the effect of the Brazilian industrial thermal modification process on some physical properties of Eucalyptus grandis juvenile wood. Flatsawn boards of juvenile wood were tested for four treatment levels: untreated and thermally modified wood at final cycle temperatures of 140 °C, 160 °C and 180 °C. Physical properties were assessed according to a standard of the Comisión Panamericana de Normas Técnicas and a method proposed by the specialized literature encompassing equilibrium moisture content (a measure of wood’s hygroscopicity), density (oven-dried and air-dried) and radial, tangential and volumetric swelling (from oven-dried to green moisture content). Thermally modified Eucalyptus grandis wood became less hygroscopic, more dimensionally stable (tangential and volumetric swelling) and less dense, even at the lowest temperature tested (140 °C), except for radial swelling, which did not differ from untreated wood.

Palabras clave : Equilibrium moisture content; heat treatment; hygroscopicity; swelling; density.

        · texto en Inglés     · Inglés ( pdf )