Effect of the thermal modification and nano-ZnO impregnation on the deterioration of Caribbean pine wood
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| Format: | Artículo científico |
| Language: | en |
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Universidad del Bío Bío
2020
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| author | Bruno Couto da Silva |
| author_facet | Bruno Couto da Silva |
| contents | Effect of the thermal modification and nano-ZnO impregnation on the deterioration of Caribbean pine wood Bruno Couto da Silva Henrique Trevisan Rosilei Aparecida Garcia Agrociencias nano mass loss termite tunnels wood deterioration Deterioration index This study aimed to investigate the effect of thermal modification and nano-zinc oxide (nano-ZnO) particle impregnation on the deterioration of Caribbean pine wood under field conditions. Samples were thermally-modified at various temperature levels (control, 180 °C, 200 °C, and 220 °C). Nano-ZnO impregnation was done with an aqueous solution at 1,5 % in an autoclave under two-steps of pressure and vacuum. Unmodified and thermally-modified, non-impregnated and nano-ZnO impregnated samples were exposed to deterioration for five months in field tests. A deterioration index was used to evaluate the health condition of the samples. The mass loss and occurrence of termite tunnels in percentage were also determined. The nano-ZnO impregnation improved the resistance of unmodified wood to field-deterioration. The thermal modification at 180oC, and 200ºC increased the wood deterioration and nano-ZnO impregnation did not improve their resistance. Unmodified and 220 ºC modified samples had a lower mass loss by xylophages than other thermal treatments regardless of the nanoparticle impregnation. The nano-ZnO impregnation decreases the occurrence of termite tunnels in unmodified, 200 ºC and 220 ºC-modified samples. 2020 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48565177015 https://www.redalyc.org/journal/485/48565177015/ https://www.redalyc.org/journal/485/48565177015/html/ https://www.redalyc.org/journal/485/48565177015/48565177015.epub https://www.redalyc.org/journal/485/48565177015/movil en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.4 Vol.22 |
| format | Artículo científico |
| id | redalyc_48565177015 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Universidad del Bío Bío |
| spellingShingle | Effect of the thermal modification and nano-ZnO impregnation on the deterioration of Caribbean pine wood Bruno Couto da Silva Agrociencias nano mass loss termite tunnels wood deterioration Deterioration index Effect of the thermal modification and nano-ZnO impregnation on the deterioration of Caribbean pine wood Bruno Couto da Silva Henrique Trevisan Rosilei Aparecida Garcia Agrociencias nano mass loss termite tunnels wood deterioration Deterioration index This study aimed to investigate the effect of thermal modification and nano-zinc oxide (nano-ZnO) particle impregnation on the deterioration of Caribbean pine wood under field conditions. Samples were thermally-modified at various temperature levels (control, 180 °C, 200 °C, and 220 °C). Nano-ZnO impregnation was done with an aqueous solution at 1,5 % in an autoclave under two-steps of pressure and vacuum. Unmodified and thermally-modified, non-impregnated and nano-ZnO impregnated samples were exposed to deterioration for five months in field tests. A deterioration index was used to evaluate the health condition of the samples. The mass loss and occurrence of termite tunnels in percentage were also determined. The nano-ZnO impregnation improved the resistance of unmodified wood to field-deterioration. The thermal modification at 180oC, and 200ºC increased the wood deterioration and nano-ZnO impregnation did not improve their resistance. Unmodified and 220 ºC modified samples had a lower mass loss by xylophages than other thermal treatments regardless of the nanoparticle impregnation. The nano-ZnO impregnation decreases the occurrence of termite tunnels in unmodified, 200 ºC and 220 ºC-modified samples. 2020 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48565177015 https://www.redalyc.org/journal/485/48565177015/ https://www.redalyc.org/journal/485/48565177015/html/ https://www.redalyc.org/journal/485/48565177015/48565177015.epub https://www.redalyc.org/journal/485/48565177015/movil en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.4 Vol.22 |
| title | Effect of the thermal modification and nano-ZnO impregnation on the deterioration of Caribbean pine wood |
| topic | Agrociencias nano mass loss termite tunnels wood deterioration Deterioration index |
| url | https://www.redalyc.org/articulo.oa?id=48565177015 https://www.redalyc.org/journal/485/48565177015/ https://www.redalyc.org/journal/485/48565177015/html/ https://www.redalyc.org/journal/485/48565177015/48565177015.epub https://www.redalyc.org/journal/485/48565177015/movil |