Effect of thermal modification on decay resistance of Corymbia citriodora and pinus taeda wood

Segundinho P. G. A., . and Brocco V. F., . and Silva M. R., . and Paes J. B., . and Loiola P. L., . and Juizo C. G. F., . Effect of thermal modification on decay resistance of Corymbia citriodora and pinus taeda wood. pp. 185-190. ISSN 0128-1283

Alternative and eco-friendly technologies such as thermal modification can improve durability and dimensional stability of wood. This study evaluated the effect of thermal modification on resistance improvement of Corymbia citriodora and Pinus taeda wood against brown and white-rot fungi under laboratory conditions. Wood samples were subjected to treatment temperatures of 160 180 200 220 and 240C in a laboratory electric furnace under dynamic nitrogen atmosphere. A treatment temperature of 260C was additionally used for P. taeda. Seven planks with dimensions of 6cm 16cm 56cm (thickness width length) were used for each temperature. The thermally modified planks were transformed into prismatic test samples with dimensions of 1.9cm 1.9cm 1.9cm. Inoculated culture bottles containing test blocks were kept in an incubation room for 12 weeks. Thermal modification temperatures at 160 and 180 C decreased the biological resistance of C. citriodora wood. Treatment temperatures of 200 220 and 240C showed satisfactory decay resistance gains for both species. Rhodonia placenta was the most degrading fungus at temperatures lower than 200C.

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Abstract

Alternative and eco-friendly technologies such as thermal modification can improve durability and dimensional stability of wood. This study evaluated the effect of thermal modification on resistance improvement of Corymbia citriodora and Pinus taeda wood against brown and white-rot fungi under laboratory conditions. Wood samples were subjected to treatment temperatures of 160 180 200 220 and 240C in a laboratory electric furnace under dynamic nitrogen atmosphere. A treatment temperature of 260C was additionally used for P. taeda. Seven planks with dimensions of 6cm 16cm 56cm (thickness width length) were used for each temperature. The thermally modified planks were transformed into prismatic test samples with dimensions of 1.9cm 1.9cm 1.9cm. Inoculated culture bottles containing test blocks were kept in an incubation room for 12 weeks. Thermal modification temperatures at 160 and 180 C decreased the biological resistance of C. citriodora wood. Treatment temperatures of 200 220 and 240C showed satisfactory decay resistance gains for both species. Rhodonia placenta was the most degrading fungus at temperatures lower than 200C.

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Item Type:	Article
AGROVOC Term:	Thermal control (environment)
AGROVOC Term:	Pinus taeda
AGROVOC Term:	Wood
AGROVOC Term:	Fungi
AGROVOC Term:	Planks
AGROVOC Term:	Sampling
AGROVOC Term:	Analysis of variance
AGROVOC Term:	Biological control
AGROVOC Term:	Temperature resistance
AGROVOC Term:	Wood decay
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/9833

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