Radiata Pine Wood Treated with Copper Nanoparticles: Leaching Analysis and Fungal Degradation

Radiata pine is the main wood species used in the Chilean construction industry, but it must be protected due to its low natural durability. Chemical protection of wood by impregnation allows for a more efficient utilization of the forest resources by extending its useful life. The use of nanopartic...

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Autores principales:	María Graciela Aguayo, Claudia Oviedo, Laura Reyes, José Navarrete, Liset Gómez, Hugo Torres, Gonzalo Gaviño, Ejnar Trollund
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	copper nanoparticles fungal degradation <i>Pinus radiata</i> wood preservation Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/1a2a62fe4e0d4a37935e2763b124df5b
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spelling	oai:doaj.org-article:1a2a62fe4e0d4a37935e2763b124df5b2021-11-25T17:39:28ZRadiata Pine Wood Treated with Copper Nanoparticles: Leaching Analysis and Fungal Degradation10.3390/f121116061999-4907https://doaj.org/article/1a2a62fe4e0d4a37935e2763b124df5b2021-11-01T00:00:00Zhttps://www.mdpi.com/1999-4907/12/11/1606https://doaj.org/toc/1999-4907Radiata pine is the main wood species used in the Chilean construction industry, but it must be protected due to its low natural durability. Chemical protection of wood by impregnation allows for a more efficient utilization of the forest resources by extending its useful life. The use of nanoparticles in wood protection has garnered great interest during the last decade, due to their unique physicochemical properties, different from those of larger sized materials. In this research, the impregnation of radiata pine wood with copper nanoparticles (CuNP) was studied in terms of retention, penetration, leaching, and its protective effect against wood rot fungi growth according to EN 113, AWPA A3-91, A9-18, and E11-16. Penetration analysis confirmed a uniform distribution across the wood, with total penetration in the impregnated samples with the highest concentration solution of CuNP. Retention values of the impregnated wood increased proportionally with the concentration of nanoparticles evaluated by EDXRF. Leaching analysis showed copper removal during the first hours of the test, with a constant leaching rate up to 144 h. Impregnated wood mass loss (ML) due to exposure to <i>Gloeophyllum trabeum</i> and <i>Rhodonia placenta</i> fungi were significantly reduced regardless of the CuNP concentration or fungi tested, with an ML smaller than 5% and smaller than 14% for leached samples.María Graciela AguayoClaudia OviedoLaura ReyesJosé NavarreteLiset GómezHugo TorresGonzalo GaviñoEjnar TrollundMDPI AGarticlecopper nanoparticlesfungal degradation<i>Pinus radiata</i>wood preservationPlant ecologyQK900-989ENForests, Vol 12, Iss 1606, p 1606 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	copper nanoparticles fungal degradation <i>Pinus radiata</i> wood preservation Plant ecology QK900-989
spellingShingle	copper nanoparticles fungal degradation <i>Pinus radiata</i> wood preservation Plant ecology QK900-989 María Graciela Aguayo Claudia Oviedo Laura Reyes José Navarrete Liset Gómez Hugo Torres Gonzalo Gaviño Ejnar Trollund Radiata Pine Wood Treated with Copper Nanoparticles: Leaching Analysis and Fungal Degradation
description	Radiata pine is the main wood species used in the Chilean construction industry, but it must be protected due to its low natural durability. Chemical protection of wood by impregnation allows for a more efficient utilization of the forest resources by extending its useful life. The use of nanoparticles in wood protection has garnered great interest during the last decade, due to their unique physicochemical properties, different from those of larger sized materials. In this research, the impregnation of radiata pine wood with copper nanoparticles (CuNP) was studied in terms of retention, penetration, leaching, and its protective effect against wood rot fungi growth according to EN 113, AWPA A3-91, A9-18, and E11-16. Penetration analysis confirmed a uniform distribution across the wood, with total penetration in the impregnated samples with the highest concentration solution of CuNP. Retention values of the impregnated wood increased proportionally with the concentration of nanoparticles evaluated by EDXRF. Leaching analysis showed copper removal during the first hours of the test, with a constant leaching rate up to 144 h. Impregnated wood mass loss (ML) due to exposure to <i>Gloeophyllum trabeum</i> and <i>Rhodonia placenta</i> fungi were significantly reduced regardless of the CuNP concentration or fungi tested, with an ML smaller than 5% and smaller than 14% for leached samples.
format	article
author	María Graciela Aguayo Claudia Oviedo Laura Reyes José Navarrete Liset Gómez Hugo Torres Gonzalo Gaviño Ejnar Trollund
author_facet	María Graciela Aguayo Claudia Oviedo Laura Reyes José Navarrete Liset Gómez Hugo Torres Gonzalo Gaviño Ejnar Trollund
author_sort	María Graciela Aguayo
title	Radiata Pine Wood Treated with Copper Nanoparticles: Leaching Analysis and Fungal Degradation
title_short	Radiata Pine Wood Treated with Copper Nanoparticles: Leaching Analysis and Fungal Degradation
title_full	Radiata Pine Wood Treated with Copper Nanoparticles: Leaching Analysis and Fungal Degradation
title_fullStr	Radiata Pine Wood Treated with Copper Nanoparticles: Leaching Analysis and Fungal Degradation
title_full_unstemmed	Radiata Pine Wood Treated with Copper Nanoparticles: Leaching Analysis and Fungal Degradation
title_sort	radiata pine wood treated with copper nanoparticles: leaching analysis and fungal degradation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1a2a62fe4e0d4a37935e2763b124df5b
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Radiata Pine Wood Treated with Copper Nanoparticles: Leaching Analysis and Fungal Degradation

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