Specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatment

Abstract: The effect of heat treatment at 50 and up to 150°C was studied on dowel-shape specimens prepared from beech (Fagus orientalis), poplar (Populus nigra), and fir (Abies alba) wood. Specimens were cut into two diameter sizes (18 and 25 mm) to explore the effect of diameter size on permeabilit...

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Autores principales:	Taghiyari,Hamid R., Avramidis,Stavros
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2019
Materias:	Beech poplar fir longitudinal permeability wood-modification.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2019000100089
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spelling	oai:scielo:S0718-221X20190001000892019-06-04Specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatmentTaghiyari,Hamid R.Avramidis,Stavros Beech poplar fir longitudinal permeability wood-modification. Abstract: The effect of heat treatment at 50 and up to 150°C was studied on dowel-shape specimens prepared from beech (Fagus orientalis), poplar (Populus nigra), and fir (Abies alba) wood. Specimens were cut into two diameter sizes (18 and 25 mm) to explore the effect of diameter size on permeability. Separate sets of specimens from each size and species were prepared to be first impregnated with a 200 ppm aqueous nanosilver (NS) suspension to investigate the effect of facilitated heat-transfer on permeability at different temperatures. Specimens were heated in five consecutive steps at 50, 75, 100, 125, and 150(C and for 24 hours in each step. High variance was found in the specific gas permeability between each treatment group, thus indicating probable high fluctuation in settlement of extractives at different spots of a log. Heat treatment only affected gas permeability at the first steps of heating (50 and 75°C), where loss of moisture content resulted in a permeability increase in nearly all species. Consecutive steps of heating up to 150(C did not significantly affect the permeability in either normal or NS-impregnated specimens.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.21 n.1 20192019-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2019000100089en10.4067/S0718-221X2019005000108
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Beech poplar fir longitudinal permeability wood-modification.
spellingShingle	Beech poplar fir longitudinal permeability wood-modification. Taghiyari,Hamid R. Avramidis,Stavros Specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatment
description	Abstract: The effect of heat treatment at 50 and up to 150°C was studied on dowel-shape specimens prepared from beech (Fagus orientalis), poplar (Populus nigra), and fir (Abies alba) wood. Specimens were cut into two diameter sizes (18 and 25 mm) to explore the effect of diameter size on permeability. Separate sets of specimens from each size and species were prepared to be first impregnated with a 200 ppm aqueous nanosilver (NS) suspension to investigate the effect of facilitated heat-transfer on permeability at different temperatures. Specimens were heated in five consecutive steps at 50, 75, 100, 125, and 150(C and for 24 hours in each step. High variance was found in the specific gas permeability between each treatment group, thus indicating probable high fluctuation in settlement of extractives at different spots of a log. Heat treatment only affected gas permeability at the first steps of heating (50 and 75°C), where loss of moisture content resulted in a permeability increase in nearly all species. Consecutive steps of heating up to 150(C did not significantly affect the permeability in either normal or NS-impregnated specimens.
author	Taghiyari,Hamid R. Avramidis,Stavros
author_facet	Taghiyari,Hamid R. Avramidis,Stavros
author_sort	Taghiyari,Hamid R.
title	Specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatment
title_short	Specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatment
title_full	Specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatment
title_fullStr	Specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatment
title_full_unstemmed	Specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatment
title_sort	specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatment
publisher	Universidad del Bío-Bío
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2019000100089
work_keys_str_mv	AT taghiyarihamidr specificgaspermeabilityofnormalandnanosilverimpregnatedsolidwoodspeciesasinfluencedbyheattreatment AT avramidisstavros specificgaspermeabilityofnormalandnanosilverimpregnatedsolidwoodspeciesasinfluencedbyheattreatment
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Specific gas permeability of normal and nanosilver-impregnated solid wood species as influenced by heat-treatment

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