Exposure of Pinus elliottii wood treated with titanium dioxide to the fungus Postia placenta and photodegradation
It was impregnated commercial titanium dioxide into Pinus elliottii wood, aiming to increase its durability against the attack of brown rot fungus Postia placenta and photodegradation caused by ultraviolet radiation. The samples were put under 8 bar pressure for 3 hours at different concentrations o...
| Hoofdauteurs: | , , , , , , |
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| Formaat: | Online |
| Taal: | spa |
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Instituto de Ecología, A.C.
2022
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| Online toegang: | https://myb.ojs.inecol.mx/index.php/myb/article/view/1895 |
| _version_ | 1799769377860485120 |
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| author | Zanatta, Paula Mattoso, Taline Gallio, Ezequiel Lazarotto, Marília Gatto, Darci Alberto da Cunha, Alexsandro Bayestorff Beltrame, Rafael |
| author_facet | Zanatta, Paula Mattoso, Taline Gallio, Ezequiel Lazarotto, Marília Gatto, Darci Alberto da Cunha, Alexsandro Bayestorff Beltrame, Rafael |
| author_sort | Zanatta, Paula |
| collection | MYB |
| description | It was impregnated commercial titanium dioxide into Pinus elliottii wood, aiming to increase its durability against the attack of brown rot fungus Postia placenta and photodegradation caused by ultraviolet radiation. The samples were put under 8 bar pressure for 3 hours at different concentrations of TiO2 (0.5%, 0.25%, 0.124% and 0%-control). To evaluate the effect of the fungus on the wood, the test was carried out according to ASTM D2017-05 and UNE-EN 113:1996 with modifications. The photodegradation was performed by exposing a tangential section to ultraviolet radiation for 400 hours, and the colorimetric parameters were periodically evaluated. Statistically, the treatments with TiO2 did not differ among themselves, but were much lower than the control, showing the effectiveness of this product in protecting the wood against the attacks of degraders. As for the photodegradation, the treated wood remained practically unchanged, differently from the control that had a darkening accelerated mainly in the first 50 hours. With this information, it can be stated that TiO2 treated wood is able to hinder the fungus access to the cell wall, to inhibit its growth and to create a barrier that protects the polymers from photodegradation, increasing its durability and emerging as a potential alternative for wood treatment. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-1895 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-18952022-11-29T22:14:05Z Exposure of Pinus elliottii wood treated with titanium dioxide to the fungus Postia placenta and photodegradation Exposición de la madera de Pinus elliottii tratada con dióxido de titanio al hongo Postia placenta y fotodegradación Zanatta, Paula Mattoso, Taline Gallio, Ezequiel Lazarotto, Marília Gatto, Darci Alberto da Cunha, Alexsandro Bayestorff Beltrame, Rafael brown rot TiO2 ultraviolet radiation wood treatment podredumbre parda TiO2 radiación ultravioleta tratamiento de la madera It was impregnated commercial titanium dioxide into Pinus elliottii wood, aiming to increase its durability against the attack of brown rot fungus Postia placenta and photodegradation caused by ultraviolet radiation. The samples were put under 8 bar pressure for 3 hours at different concentrations of TiO2 (0.5%, 0.25%, 0.124% and 0%-control). To evaluate the effect of the fungus on the wood, the test was carried out according to ASTM D2017-05 and UNE-EN 113:1996 with modifications. The photodegradation was performed by exposing a tangential section to ultraviolet radiation for 400 hours, and the colorimetric parameters were periodically evaluated. Statistically, the treatments with TiO2 did not differ among themselves, but were much lower than the control, showing the effectiveness of this product in protecting the wood against the attacks of degraders. As for the photodegradation, the treated wood remained practically unchanged, differently from the control that had a darkening accelerated mainly in the first 50 hours. With this information, it can be stated that TiO2 treated wood is able to hinder the fungus access to the cell wall, to inhibit its growth and to create a barrier that protects the polymers from photodegradation, increasing its durability and emerging as a potential alternative for wood treatment. Se impregnó dióxido de titanio comercial en la madera de Pinus elliottii, con el objetivo de aumentar su durabilidad contra el ataque del hongo pardo de la Postia placenta y la fotodegradación causada por la radiación ultravioleta. Las muestras se pusieron a una presión de 8 bar durante 3 horas a diferentes concentraciones de TiO2 (0.5%, 0.25%, 0.124% y 0% de control). Para evaluar el efecto del hongo en la madera, la prueba se realizó de acuerdo con la norma ASTM D2017-05 y UNE-EN 113:1996 con modificaciones. La fotodegradación se realizó exponiendo una sección tangencial a radiación ultravioleta durante 400 horas, y los parámetros colorimétricos se evaluaron periódicamente. Estadísticamente, los tratamientos con TiO2 no diferían entre sí, pero eran mucho más bajos que el control, mostrando la efectividad de este producto en la protección de la madera contra los ataques de los degradadores. En cuanto a la fotodegradación, la madera tratada se mantuvo prácticamente sin cambios, a diferencia del control que tuvo un oscurecimiento acelerado principalmente en las primeras 50 horas. Con esta información, se puede afirmar que la madera tratada con TiO2 puede dificultar el acceso del hongo a la pared celular, inhibir su crecimiento y crear una barrera que protege a los polímeros de la fotodegradación, aumentando su durabilidad y emergiendo como una alternativa potencial para tratamiento de la madera. Instituto de Ecología, A.C. 2022-07-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf text/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/1895 10.21829/myb.2022.2811895 Madera y Bosques; Vol. 28 No. 1 (2022): Spring 2022; e2811895 Madera y Bosques; Vol. 28 Núm. 1 (2022): Primavera 2022; e2811895 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/1895/2381 https://myb.ojs.inecol.mx/index.php/myb/article/view/1895/2396 10.21829/myb.2019.252758 10.21829/myb.2020.261797 Derechos de autor 2022 Madera y Bosques http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Zanatta, Paula Mattoso, Taline Gallio, Ezequiel Lazarotto, Marília Gatto, Darci Alberto da Cunha, Alexsandro Bayestorff Beltrame, Rafael Exposure of Pinus elliottii wood treated with titanium dioxide to the fungus Postia placenta and photodegradation |
| title | Exposure of Pinus elliottii wood treated with titanium dioxide to the fungus Postia placenta and photodegradation |
| title_full | Exposure of Pinus elliottii wood treated with titanium dioxide to the fungus Postia placenta and photodegradation |
| title_fullStr | Exposure of Pinus elliottii wood treated with titanium dioxide to the fungus Postia placenta and photodegradation |
| title_full_unstemmed | Exposure of Pinus elliottii wood treated with titanium dioxide to the fungus Postia placenta and photodegradation |
| title_short | Exposure of Pinus elliottii wood treated with titanium dioxide to the fungus Postia placenta and photodegradation |
| title_sort | exposure of pinus elliottii wood treated with titanium dioxide to the fungus postia placenta and photodegradation |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/1895 |
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