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Alumina as an Antifungal Agent for Pinus elliottii Wood

This work deals with the durability of a Pinus elliotti wood impregnated with alumina (Al(2)O(3)) particles. The samples were impregnated at three different Al(2)O(3) weight fractions (c.a. 0.1%, 0.3% and 0.5%) and were then exposed to two wood-rot fungi, namely white-rot fungus (Trametes versicolor...

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Detalles Bibliográficos
Autores principales: Acosta, Andrey P., Gallio, Ezequiel, Cruz, Nidria, Aramburu, Arthur B., Lunkes, Nayara, Missio, André L., Delucis, Rafael de A., Gatto, Darci A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9785303/
https://www.ncbi.nlm.nih.gov/pubmed/36547632
http://dx.doi.org/10.3390/jof8121299
Descripción
Sumario:This work deals with the durability of a Pinus elliotti wood impregnated with alumina (Al(2)O(3)) particles. The samples were impregnated at three different Al(2)O(3) weight fractions (c.a. 0.1%, 0.3% and 0.5%) and were then exposed to two wood-rot fungi, namely white-rot fungus (Trametes versicolor) and brown-rot fungus (Gloeophyllum trabeum). Thermal and chemical characteristics were evaluated by Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric (TG) analyses. The wood which incorporated 0.3 wt% of Al(2)O(3) presented a weight loss 91.5% smaller than the untreated wood after being exposed to the white-rot fungus. On the other hand, the highest effectiveness against the brown-rot fungus was reached by the wood treated with 5 wt% of Al(2)O(3), which presented a mass loss 91.6% smaller than that of the untreated pine wood. The Al(2)O(3)-treated woods presented higher antifungal resistances than the untreated ones in a way that: the higher the Al(2)O(3) content, the higher the thermal stability. In general, the impregnation of the Al(2)O(3) particles seems to be a promising treatment for wood protection against both studied wood-rot fungi. Additionally, both FT-IR and TG results were valuable tools to ascertain chemical changes ascribed to fungal decay.