Low Density Wood Impregnation with Water-Repellent Organosilicic Compounds

Many protective treatments for low density wood are applied by impregnation to give water-repellency and to control pathologies that usually have this substrate. The properties of Araucaria angustifolia, chemically modified by impregnation with methyltriethoxysilane, n-octyltriethoxysilane and mixtu...

Descripción completa

Detalles Bibliográficos
Autores principales: Canosa, Guadalupe, Alfieri, Paula Vanesa, Giúdice, Carlos Alberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ingeniería Química
Wood
Alkoxysilanes
Hydrophobicity
Water vapor permeability
Dimensional stability
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/81369
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-81369
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería Química
Wood
Alkoxysilanes
Hydrophobicity
Water vapor permeability
Dimensional stability
spellingShingle Ingeniería Química
Wood
Alkoxysilanes
Hydrophobicity
Water vapor permeability
Dimensional stability
Canosa, Guadalupe
Alfieri, Paula Vanesa
Giúdice, Carlos Alberto
Low Density Wood Impregnation with Water-Repellent Organosilicic Compounds
topic_facet Ingeniería Química
Wood
Alkoxysilanes
Hydrophobicity
Water vapor permeability
Dimensional stability
description Many protective treatments for low density wood are applied by impregnation to give water-repellency and to control pathologies that usually have this substrate. The properties of Araucaria angustifolia, chemically modified by impregnation with methyltriethoxysilane, n-octyltriethoxysilane and mixtures of both in several ratios, were investigated to achieve mainly high dimensional stability, low capillary water absorption as well as satisfactory water vapor permeability. The aforementioned impregnants produce the wood chemical modification, involving the reaction of hydroxyl groups of the wood with the hydrolysis products of alcoxysilanes. It is concluded that the organosilicon polymers allow improving important characteristics of wood: 1) the non-occlusive coating keeps the water vapor permeability unaltered; 2) the alkoxysilane type defines the hydrophobicity and the continuity of coating formed on the pore wall and finally; 3) the polymeric structure formed after finishing sol-gel process incises both on the capillary water absorption and the dimensional stability. In addition, the studied treatments have the advantage of allowing that the water vapor, which permeates through the organosilicon coating placed on cell wall, can exit by hydrophobic repulsion and thus, prevent faults appearance generated by the condensed water inside of wood.
format Articulo
Articulo
author Canosa, Guadalupe
Alfieri, Paula Vanesa
Giúdice, Carlos Alberto
author_facet Canosa, Guadalupe
Alfieri, Paula Vanesa
Giúdice, Carlos Alberto
author_sort Canosa, Guadalupe
title Low Density Wood Impregnation with Water-Repellent Organosilicic Compounds
title_short Low Density Wood Impregnation with Water-Repellent Organosilicic Compounds
title_full Low Density Wood Impregnation with Water-Repellent Organosilicic Compounds
title_fullStr Low Density Wood Impregnation with Water-Repellent Organosilicic Compounds
title_full_unstemmed Low Density Wood Impregnation with Water-Repellent Organosilicic Compounds
title_sort low density wood impregnation with water-repellent organosilicic compounds
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/81369
work_keys_str_mv AT canosaguadalupe lowdensitywoodimpregnationwithwaterrepellentorganosiliciccompounds
AT alfieripaulavanesa lowdensitywoodimpregnationwithwaterrepellentorganosiliciccompounds
AT giudicecarlosalberto lowdensitywoodimpregnationwithwaterrepellentorganosiliciccompounds
bdutipo_str Repositorios
_version_ 1764820488042840067

Ejemplares similares