Effect of the Brazilian thermal modification process on the chemical composition of Eucalyptus grandis juvenile wood - Part 1: Cell wall polymers and extractives contents

Authors

  • Djeison Cesar Batista
  • Graciela Ines Bolzón de Muñiz
  • José Tarcísio da Silva Oliveira
  • Juarez Benigno Paes
  • Silvana Nisgoski

Keywords:

Extractives content, holocellulose, insoluble lignin, VAP HolzSysteme®.

Abstract

This article reports the first study of the influence of the Brazilian process of thermal modification called VAP HolzSysteme® on the chemical composition of Eucalyptus wood. Flatsawn boards of Eucalyptus grandis juvenile wood were tested for four treatment levels: untreated and thermally modified at final cycle temperatures of 140, 160 and 180 °C. Chemical analyses were carried out according to the standards of the Technical Association of the Pulp and Paper Industry and encompassed total extractives, insoluble lignin, holocellulose (cellulose + hemicelluloses) and solvent soluble extractives in water (cold and hot) and ethanol:toluene (1:2 v.v.) mixture. The chemical composition of thermally modified Eucalyptus grandis juvenile wood was significantly changed by the VAP HolzSysteme® process compared to untreated wood. Only the wood thermally modified at final cycle temperature of 180 °C was significantly different for all the chemical analyses performed compared to untreated wood.

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How to Cite

Batista, D. C., Bolzón de Muñiz, G. I., da Silva Oliveira, J. T., Benigno Paes, J., & Nisgoski, S. (2016). Effect of the Brazilian thermal modification process on the chemical composition of Eucalyptus grandis juvenile wood - Part 1: Cell wall polymers and extractives contents. Maderas. Ciencia Y Tecnología, 18(2), 273–284. Retrieved from https://revistas.ubiobio.cl/index.php/MCT/article/view/2373

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