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| 30. |  | KELLER, M. M.; PALACE, M. W.; SILVA, J. N. M.; ASNER, G. P. Selective Logging Effects on Carbon Budgets at Three Sites in the Brazilian Amazon. In: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos. Brasília, DF: LBA, 2004. Resumo 21.3.| Biblioteca(s): Embrapa Amazônia Oriental. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
18/01/2022 |
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Data da última atualização: |
14/02/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SANSON, C. S. L.; HELM, C. V.; MAGALHAES, W. L. E.; BOLZON DE MUNIZ, G. I.; MISSIO, A. L.; CADEMARTORI, P. H. G. de. |
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Afiliação: |
CAIO SILVESTRE LIMA SANSON, Programa de Graduação da UFPR; CRISTIANE VIEIRA HELM, CNPF; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; GRACIELA INÉS BOLZON DE MUNIZ, UFPR; ANDRÉ LUIZ MISSIO, UFPel; PEDRO HENRIQUE GONZALEZ DE CADEMARTORI, UFPR. |
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Título: |
Enhancing water repellency and decay resistance of wood by using water-soluble fractions separated from pyrolytic lignin of fast-pyrolysis bio-oil. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Industrial Crops & Products, v. 177, 114540, Mar. 2022. 10 p. |
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DOI: |
https://doi.org/10.1016/j.indcrop.2022.114540 |
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Idioma: |
Inglês |
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Conteúdo: |
Biocides with lower environmental and human health impacts have been demanded by the society. Based on bioeconomy concepts, we investigated the potential of water-soluble fractions separated from the pyrolytic lignin of fast-pyrolysis bio-oil for wood protection against physical and biological agents. The high-viscosity crude bio-oil was fractionated in two oil-to-water ratios, 1:50 and 1:100, by separating the pyrolytic lignin and water-soluble fractions. Additionally, exfoliated nanostructures of bentonite were incorporated into water-soluble fractions to form bicomponent systems to improve the protection degree. These materials were then characterized in terms of morphological, chemical, and biological features. The preservative formulations were impregnated into pinewood (Pinus taeda), with subsequent evaluation of the morphology, wettability, thermal aspects, and antifungal activity of treated wood to determine the degree of protection. The water-soluble fractions severely impacted the water repellency of wood with contact angles up to 115°, and normal growth of the decay fungi (Trametes versicolor and Gloeophyllum trabeum). Also, the addition of nanobentonite in the formulations improved the action of the water-soluble fractions against the physical and biological agents, specifically for G. trabeum the decay can be decreased around three times compared to untreated wood. The combined action of water-soluble fraction and nanobentonite supported the wood water repellency with time-dependent stability of the contact angle and excellent antifungal activity, which is partially explained by the chemical composition of the water-soluble fraction and physical barriers formed by the nanobentonite on the surface. Therefore, a single use of water-soluble fractions or in combination with nanobentonite has potential for application as a bio-based wood protection process. MenosBiocides with lower environmental and human health impacts have been demanded by the society. Based on bioeconomy concepts, we investigated the potential of water-soluble fractions separated from the pyrolytic lignin of fast-pyrolysis bio-oil for wood protection against physical and biological agents. The high-viscosity crude bio-oil was fractionated in two oil-to-water ratios, 1:50 and 1:100, by separating the pyrolytic lignin and water-soluble fractions. Additionally, exfoliated nanostructures of bentonite were incorporated into water-soluble fractions to form bicomponent systems to improve the protection degree. These materials were then characterized in terms of morphological, chemical, and biological features. The preservative formulations were impregnated into pinewood (Pinus taeda), with subsequent evaluation of the morphology, wettability, thermal aspects, and antifungal activity of treated wood to determine the degree of protection. The water-soluble fractions severely impacted the water repellency of wood with contact angles up to 115°, and normal growth of the decay fungi (Trametes versicolor and Gloeophyllum trabeum). Also, the addition of nanobentonite in the formulations improved the action of the water-soluble fractions against the physical and biological agents, specifically for G. trabeum the decay can be decreased around three times compared to untreated wood. The combined action of water-soluble fraction and nanobentonite supported the wood water repellenc... Mostrar Tudo |
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Palavras-Chave: |
Antifungal activity; Aqueous fraction; Atividade antifúngica; Biorefinaria; Biorefinery; Conversão termoquímica; Proteção à madeira; Repelência à água; Thermochemical conversion; Water repellency; Wood protection. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02985naa a2200325 a 4500
001 2139126
005 2022-02-14
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.indcrop.2022.114540$2DOI
100 1 $aSANSON, C. S. L.
245 $aEnhancing water repellency and decay resistance of wood by using water-soluble fractions separated from pyrolytic lignin of fast-pyrolysis bio-oil.$h[electronic resource]
260 $c2022
520 $aBiocides with lower environmental and human health impacts have been demanded by the society. Based on bioeconomy concepts, we investigated the potential of water-soluble fractions separated from the pyrolytic lignin of fast-pyrolysis bio-oil for wood protection against physical and biological agents. The high-viscosity crude bio-oil was fractionated in two oil-to-water ratios, 1:50 and 1:100, by separating the pyrolytic lignin and water-soluble fractions. Additionally, exfoliated nanostructures of bentonite were incorporated into water-soluble fractions to form bicomponent systems to improve the protection degree. These materials were then characterized in terms of morphological, chemical, and biological features. The preservative formulations were impregnated into pinewood (Pinus taeda), with subsequent evaluation of the morphology, wettability, thermal aspects, and antifungal activity of treated wood to determine the degree of protection. The water-soluble fractions severely impacted the water repellency of wood with contact angles up to 115°, and normal growth of the decay fungi (Trametes versicolor and Gloeophyllum trabeum). Also, the addition of nanobentonite in the formulations improved the action of the water-soluble fractions against the physical and biological agents, specifically for G. trabeum the decay can be decreased around three times compared to untreated wood. The combined action of water-soluble fraction and nanobentonite supported the wood water repellency with time-dependent stability of the contact angle and excellent antifungal activity, which is partially explained by the chemical composition of the water-soluble fraction and physical barriers formed by the nanobentonite on the surface. Therefore, a single use of water-soluble fractions or in combination with nanobentonite has potential for application as a bio-based wood protection process.
653 $aAntifungal activity
653 $aAqueous fraction
653 $aAtividade antifúngica
653 $aBiorefinaria
653 $aBiorefinery
653 $aConversão termoquímica
653 $aProteção à madeira
653 $aRepelência à água
653 $aThermochemical conversion
653 $aWater repellency
653 $aWood protection
700 1 $aHELM, C. V.
700 1 $aMAGALHAES, W. L. E.
700 1 $aBOLZON DE MUNIZ, G. I.
700 1 $aMISSIO, A. L.
700 1 $aCADEMARTORI, P. H. G. de
773 $tIndustrial Crops & Products$gv. 177, 114540, Mar. 2022. 10 p.
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