Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes

Autores
Canosa, Guadalupe; Alfieri, Paula Vanesa; Giudice, Carlos Alberto
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The wood, very heterogeneous and complex material, changes its volume by water absorption or desorption causing swelling or shrinkage and also it can be degraded both by action of microorganisms and fire; the above-mentioned is a great inconvenient for most commercial uses. In this research, wood specimens of Pinus radiata were previously pretreated in a Soxhlet extractor for 2 hours with a solution of sodium hydroxide (activation of the cellulose) and then impregnated with alkylalkoxysilanes hydrolyzed and condensed "in situ" by the sol-gel process. Silanes selected were triethoxysilane, methyltriethoxysilane, n-propyltriethoxysilane, n-buthyltriethoxysilane and n-octhyltriethoxysilane. Impregnation process was carried out under controlled operating conditions to achieve similar weight gains of the chemical modifier. The pH was adjusted to alkaline value for controlling kinetic of hydrolysis and condensation reactions. Results indicated that dimensional stability increased with the increase of the length of the hydrocarbon chain of the alkoxydes, which would be based essentially on their enhanced hydrophobicity but without discarding the partial occupation of the pores by polymerized siloxanes and the interaction of alkoxides with cell wall components. In addition, wood specimens impregnated with mentioned alkylalkoxysilanes also showed an excellent fire performance and decay resistance.
Fil: Canosa, Guadalupe. Universidad Tecnologica Nacional. Facultad Regional la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Alfieri, Paula Vanesa. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Giudice, Carlos Alberto. Universidad Tecnologica Nacional. Facultad Regional la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Wood
Impregnation
Alkylalkoxysilane
Dimensional Stability
Fire Performance
Decay Resistance
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11239
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/11239
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Dimensional stability, fire performance and decay resistance in wood impregnated with AlkylalkoxysilanesCanosa, GuadalupeAlfieri, Paula VanesaGiudice, Carlos AlbertoWoodImpregnationAlkylalkoxysilaneDimensional StabilityFire PerformanceDecay Resistancehttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The wood, very heterogeneous and complex material, changes its volume by water absorption or desorption causing swelling or shrinkage and also it can be degraded both by action of microorganisms and fire; the above-mentioned is a great inconvenient for most commercial uses. In this research, wood specimens of Pinus radiata were previously pretreated in a Soxhlet extractor for 2 hours with a solution of sodium hydroxide (activation of the cellulose) and then impregnated with alkylalkoxysilanes hydrolyzed and condensed "in situ" by the sol-gel process. Silanes selected were triethoxysilane, methyltriethoxysilane, n-propyltriethoxysilane, n-buthyltriethoxysilane and n-octhyltriethoxysilane. Impregnation process was carried out under controlled operating conditions to achieve similar weight gains of the chemical modifier. The pH was adjusted to alkaline value for controlling kinetic of hydrolysis and condensation reactions. Results indicated that dimensional stability increased with the increase of the length of the hydrocarbon chain of the alkoxydes, which would be based essentially on their enhanced hydrophobicity but without discarding the partial occupation of the pores by polymerized siloxanes and the interaction of alkoxides with cell wall components. In addition, wood specimens impregnated with mentioned alkylalkoxysilanes also showed an excellent fire performance and decay resistance.Fil: Canosa, Guadalupe. Universidad Tecnologica Nacional. Facultad Regional la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Alfieri, Paula Vanesa. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaFil: Giudice, Carlos Alberto. Universidad Tecnologica Nacional. Facultad Regional la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaWorld Scientific2013-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11239Canosa, Guadalupe; Alfieri, Paula Vanesa; Giudice, Carlos Alberto; Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes; World Scientific; International Journal of Engineering and Innovative Technology; 3; 5; 11-2013; 394-4002277-3754enginfo:eu-repo/semantics/altIdentifier/url/http://www.ijeit.com/Vol%203/Issue%205/IJEIT1412201311_65.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:47Zoai:ri.conicet.gov.ar:11336/11239instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:47:47.463CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes
title Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes
spellingShingle Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes
Canosa, Guadalupe
Wood
Impregnation
Alkylalkoxysilane
Dimensional Stability
Fire Performance
Decay Resistance
title_short Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes
title_full Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes
title_fullStr Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes
title_full_unstemmed Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes
title_sort Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes
dc.creator.none.fl_str_mv Canosa, Guadalupe
Alfieri, Paula Vanesa
Giudice, Carlos Alberto
author Canosa, Guadalupe
author_facet Canosa, Guadalupe
Alfieri, Paula Vanesa
Giudice, Carlos Alberto
author_role author
author2 Alfieri, Paula Vanesa
Giudice, Carlos Alberto
author2_role author
author
dc.subject.none.fl_str_mv Wood
Impregnation
Alkylalkoxysilane
Dimensional Stability
Fire Performance
Decay Resistance
topic Wood
Impregnation
Alkylalkoxysilane
Dimensional Stability
Fire Performance
Decay Resistance
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The wood, very heterogeneous and complex material, changes its volume by water absorption or desorption causing swelling or shrinkage and also it can be degraded both by action of microorganisms and fire; the above-mentioned is a great inconvenient for most commercial uses. In this research, wood specimens of Pinus radiata were previously pretreated in a Soxhlet extractor for 2 hours with a solution of sodium hydroxide (activation of the cellulose) and then impregnated with alkylalkoxysilanes hydrolyzed and condensed "in situ" by the sol-gel process. Silanes selected were triethoxysilane, methyltriethoxysilane, n-propyltriethoxysilane, n-buthyltriethoxysilane and n-octhyltriethoxysilane. Impregnation process was carried out under controlled operating conditions to achieve similar weight gains of the chemical modifier. The pH was adjusted to alkaline value for controlling kinetic of hydrolysis and condensation reactions. Results indicated that dimensional stability increased with the increase of the length of the hydrocarbon chain of the alkoxydes, which would be based essentially on their enhanced hydrophobicity but without discarding the partial occupation of the pores by polymerized siloxanes and the interaction of alkoxides with cell wall components. In addition, wood specimens impregnated with mentioned alkylalkoxysilanes also showed an excellent fire performance and decay resistance.
Fil: Canosa, Guadalupe. Universidad Tecnologica Nacional. Facultad Regional la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Alfieri, Paula Vanesa. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Giudice, Carlos Alberto. Universidad Tecnologica Nacional. Facultad Regional la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The wood, very heterogeneous and complex material, changes its volume by water absorption or desorption causing swelling or shrinkage and also it can be degraded both by action of microorganisms and fire; the above-mentioned is a great inconvenient for most commercial uses. In this research, wood specimens of Pinus radiata were previously pretreated in a Soxhlet extractor for 2 hours with a solution of sodium hydroxide (activation of the cellulose) and then impregnated with alkylalkoxysilanes hydrolyzed and condensed "in situ" by the sol-gel process. Silanes selected were triethoxysilane, methyltriethoxysilane, n-propyltriethoxysilane, n-buthyltriethoxysilane and n-octhyltriethoxysilane. Impregnation process was carried out under controlled operating conditions to achieve similar weight gains of the chemical modifier. The pH was adjusted to alkaline value for controlling kinetic of hydrolysis and condensation reactions. Results indicated that dimensional stability increased with the increase of the length of the hydrocarbon chain of the alkoxydes, which would be based essentially on their enhanced hydrophobicity but without discarding the partial occupation of the pores by polymerized siloxanes and the interaction of alkoxides with cell wall components. In addition, wood specimens impregnated with mentioned alkylalkoxysilanes also showed an excellent fire performance and decay resistance.
publishDate 2013
dc.date.none.fl_str_mv 2013-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/11239
Canosa, Guadalupe; Alfieri, Paula Vanesa; Giudice, Carlos Alberto; Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes; World Scientific; International Journal of Engineering and Innovative Technology; 3; 5; 11-2013; 394-400
2277-3754
url http://hdl.handle.net/11336/11239
identifier_str_mv Canosa, Guadalupe; Alfieri, Paula Vanesa; Giudice, Carlos Alberto; Dimensional stability, fire performance and decay resistance in wood impregnated with Alkylalkoxysilanes; World Scientific; International Journal of Engineering and Innovative Technology; 3; 5; 11-2013; 394-400
2277-3754
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.ijeit.com/Vol%203/Issue%205/IJEIT1412201311_65.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv World Scientific
publisher.none.fl_str_mv World Scientific
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613487927492608
score 13.070432

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