Effects of the Combined Modification Process of Glutaraldehyde/ paraffin on Biological and Mechanical properties of Poplar wood

In this study, the mechanical and biological properties of modified poplar wood with glutaraldehyde and paraffin were investigated. Modification was performed with glutaraldehyde at different concentrations of glutaraldehyde, 5, 10 and 20% using magnesium chloride as a catalyst and then subsequently...

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Autores principales:	Neda Esmaeili, Maryam Ghorbani, Porya Biparva
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2016
Materias:	Glutaraldehyde Paraffin MECHANICAL PROPERTIES White rot Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/45743c753044462391c42697c3ce26e4
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id	oai:doaj.org-article:45743c753044462391c42697c3ce26e4
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spelling	oai:doaj.org-article:45743c753044462391c42697c3ce26e42021-12-02T04:55:22ZEffects of the Combined Modification Process of Glutaraldehyde/ paraffin on Biological and Mechanical properties of Poplar wood1735-09132383-112X10.22092/ijwpr.2016.106762https://doaj.org/article/45743c753044462391c42697c3ce26e42016-12-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_106762_e4e57ca1be0eff0698fa182eac2d9fdc.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XIn this study, the mechanical and biological properties of modified poplar wood with glutaraldehyde and paraffin were investigated. Modification was performed with glutaraldehyde at different concentrations of glutaraldehyde, 5, 10 and 20% using magnesium chloride as a catalyst and then subsequently with paraffin by vacuum-pressure method. Increasing concentration of glutaraldehyde caused to weight gain and bulking wood cell wall, subsequently reduced paraffin penetration into the porous structure of wood. Biological resistance exposed to white rot fungi and mechanical properties were measured according to the standards EN113 and ASTM D143-94, respectively. Scanning electron microscopic images showed bulking of cell walls and paraffin presence in cell cavities. According to results of TGA, increasing of modification intensity decreased mass loss due to cross linking formation between glutaraldehyde and cell wall polymers. Paraffin at combined modification containing 10% and 20% glutaraldehyde improved significantly the modulus of elasticity. Glutaraldehyde reduced bending strength, but paraffin present in the modified samples improved it. The Glutaraldehyde increased compression strength parallel to grain and hardness that the improvement was more obvious in combined modification. Modification with glutaraldehyde enhanced decay resistance exposed to white rot fungi, and this improvement intensified at the presence of paraffin. Inhibitory influence of chemical modification on wood attacking white rot fungi can be attributed to decreases the wood moisture, bulking of cell walls and blocking cell cavities.Neda EsmaeiliMaryam GhorbaniPorya BiparvaRegional Information Center for Science and Technology (RICeST)articleGlutaraldehydeParaffinMECHANICAL PROPERTIESWhite rotForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 31, Iss 4, Pp 606-620 (2016)
institution	DOAJ
collection	DOAJ
language	FA
topic	Glutaraldehyde Paraffin MECHANICAL PROPERTIES White rot Forestry SD1-669.5
spellingShingle	Glutaraldehyde Paraffin MECHANICAL PROPERTIES White rot Forestry SD1-669.5 Neda Esmaeili Maryam Ghorbani Porya Biparva Effects of the Combined Modification Process of Glutaraldehyde/ paraffin on Biological and Mechanical properties of Poplar wood
description	In this study, the mechanical and biological properties of modified poplar wood with glutaraldehyde and paraffin were investigated. Modification was performed with glutaraldehyde at different concentrations of glutaraldehyde, 5, 10 and 20% using magnesium chloride as a catalyst and then subsequently with paraffin by vacuum-pressure method. Increasing concentration of glutaraldehyde caused to weight gain and bulking wood cell wall, subsequently reduced paraffin penetration into the porous structure of wood. Biological resistance exposed to white rot fungi and mechanical properties were measured according to the standards EN113 and ASTM D143-94, respectively. Scanning electron microscopic images showed bulking of cell walls and paraffin presence in cell cavities. According to results of TGA, increasing of modification intensity decreased mass loss due to cross linking formation between glutaraldehyde and cell wall polymers. Paraffin at combined modification containing 10% and 20% glutaraldehyde improved significantly the modulus of elasticity. Glutaraldehyde reduced bending strength, but paraffin present in the modified samples improved it. The Glutaraldehyde increased compression strength parallel to grain and hardness that the improvement was more obvious in combined modification. Modification with glutaraldehyde enhanced decay resistance exposed to white rot fungi, and this improvement intensified at the presence of paraffin. Inhibitory influence of chemical modification on wood attacking white rot fungi can be attributed to decreases the wood moisture, bulking of cell walls and blocking cell cavities.
format	article
author	Neda Esmaeili Maryam Ghorbani Porya Biparva
author_facet	Neda Esmaeili Maryam Ghorbani Porya Biparva
author_sort	Neda Esmaeili
title	Effects of the Combined Modification Process of Glutaraldehyde/ paraffin on Biological and Mechanical properties of Poplar wood
title_short	Effects of the Combined Modification Process of Glutaraldehyde/ paraffin on Biological and Mechanical properties of Poplar wood
title_full	Effects of the Combined Modification Process of Glutaraldehyde/ paraffin on Biological and Mechanical properties of Poplar wood
title_fullStr	Effects of the Combined Modification Process of Glutaraldehyde/ paraffin on Biological and Mechanical properties of Poplar wood
title_full_unstemmed	Effects of the Combined Modification Process of Glutaraldehyde/ paraffin on Biological and Mechanical properties of Poplar wood
title_sort	effects of the combined modification process of glutaraldehyde/ paraffin on biological and mechanical properties of poplar wood
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2016
url	https://doaj.org/article/45743c753044462391c42697c3ce26e4
work_keys_str_mv	AT nedaesmaeili effectsofthecombinedmodificationprocessofglutaraldehydeparaffinonbiologicalandmechanicalpropertiesofpoplarwood AT maryamghorbani effectsofthecombinedmodificationprocessofglutaraldehydeparaffinonbiologicalandmechanicalpropertiesofpoplarwood AT poryabiparva effectsofthecombinedmodificationprocessofglutaraldehydeparaffinonbiologicalandmechanicalpropertiesofpoplarwood
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Effects of the Combined Modification Process of Glutaraldehyde/ paraffin on Biological and Mechanical properties of Poplar wood

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