Biological durability of wood modified by citric acid

This paper presents the results of measurement of durability of beech wood (Fagus sylvatica) modified by Citric Acid (CA) against brown rot fungus Poria placenta according to EN 113. Modification was performedby impregnation with 7.0% CA and 6.5% sodium-hypophosphite (SHP) water solution and 10-hour...

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Autores principales:	Bogoslav Šefc, Matija Jug, Marin Hasan, Radovan Despot
Formato:	article
Lenguaje:	EN
Publicado:	University of Zagreb, Faculty of Forestry and Wood Technology 2008
Materias:	Chemical modification of wood Esterification Citric acid Biological durability Poria placenta Beechwood Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/6d2354f6f2a8447d810d4e7683c87194
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spelling	oai:doaj.org-article:6d2354f6f2a8447d810d4e7683c871942021-12-02T04:50:07ZBiological durability of wood modified by citric acid0012-6772https://doaj.org/article/6d2354f6f2a8447d810d4e7683c871942008-07-01T00:00:00Zhttp://hrcak.srce.hr/file/40059https://doaj.org/toc/0012-6772This paper presents the results of measurement of durability of beech wood (Fagus sylvatica) modified by Citric Acid (CA) against brown rot fungus Poria placenta according to EN 113. Modification was performedby impregnation with 7.0% CA and 6.5% sodium-hypophosphite (SHP) water solution and 10-hour curing at 140 °C. The influence of thermal treatment on durability was also researched. Weight percentage gain (WPG) caused by modification, moisture content (MC) and mass loss of wood (dm) after fungal nutrition were measured. WPG of modified beech wood was 6.1% and that of thermally treated wood was -0.3%. The results showed increased durability of modified wood to be 8.3 times greater than nonmodified, while thermal treatment did not give significant durability improvement. These results indicate modification by CA as a promising alternative, but further research on optimisation of modification parameters is needed to achieve improvement of wood properties.Bogoslav ŠefcMatija JugMarin HasanRadovan DespotUniversity of Zagreb, Faculty of Forestry and Wood TechnologyarticleChemical modification of woodEsterificationCitric acidBiological durabilityPoria placentaBeechwoodForestrySD1-669.5ENDrvna Industrija, Vol 59, Iss 2, Pp 55-59 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical modification of wood Esterification Citric acid Biological durability Poria placenta Beechwood Forestry SD1-669.5
spellingShingle	Chemical modification of wood Esterification Citric acid Biological durability Poria placenta Beechwood Forestry SD1-669.5 Bogoslav Šefc Matija Jug Marin Hasan Radovan Despot Biological durability of wood modified by citric acid
description	This paper presents the results of measurement of durability of beech wood (Fagus sylvatica) modified by Citric Acid (CA) against brown rot fungus Poria placenta according to EN 113. Modification was performedby impregnation with 7.0% CA and 6.5% sodium-hypophosphite (SHP) water solution and 10-hour curing at 140 °C. The influence of thermal treatment on durability was also researched. Weight percentage gain (WPG) caused by modification, moisture content (MC) and mass loss of wood (dm) after fungal nutrition were measured. WPG of modified beech wood was 6.1% and that of thermally treated wood was -0.3%. The results showed increased durability of modified wood to be 8.3 times greater than nonmodified, while thermal treatment did not give significant durability improvement. These results indicate modification by CA as a promising alternative, but further research on optimisation of modification parameters is needed to achieve improvement of wood properties.
format	article
author	Bogoslav Šefc Matija Jug Marin Hasan Radovan Despot
author_facet	Bogoslav Šefc Matija Jug Marin Hasan Radovan Despot
author_sort	Bogoslav Šefc
title	Biological durability of wood modified by citric acid
title_short	Biological durability of wood modified by citric acid
title_full	Biological durability of wood modified by citric acid
title_fullStr	Biological durability of wood modified by citric acid
title_full_unstemmed	Biological durability of wood modified by citric acid
title_sort	biological durability of wood modified by citric acid
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2008
url	https://doaj.org/article/6d2354f6f2a8447d810d4e7683c87194
work_keys_str_mv	AT bogoslavsefc biologicaldurabilityofwoodmodifiedbycitricacid AT matijajug biologicaldurabilityofwoodmodifiedbycitricacid AT marinhasan biologicaldurabilityofwoodmodifiedbycitricacid AT radovandespot biologicaldurabilityofwoodmodifiedbycitricacid
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Biological durability of wood modified by citric acid

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