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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/11/2018 |
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Data da última atualização: |
09/11/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATTOS, B. D.; QUEIROZ, L. M. R. de S. B.; KUMODE, M. M. N.; MAGALHAES, W. L. E. |
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Afiliação: |
Bruno D. Mattos, Doutorando UFPR / Embrapa Florestas; Lívia M. R. de Souza Brites Queiroz, UFPR; Marina Mieko Nishidate Kumode, PUC-PR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Thermosetting composites prepared using husk of pine nuts from Araucaria angustifolia. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Polymer Composites, v. 39, n. 2, p. 476-483, Feb. 2018. |
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DOI: |
10.1002/pc.23958 |
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Idioma: |
Inglês |
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Conteúdo: |
The high consumption of pine nuts as food leads to high amounts of husk dispensed as waste. The incorporation of the husk from pine nut into composites appears as a strategic route to explore the commercialization of the Araucaria angustifolia. The present study aims to prepare and characterize thermosetting composites of urea and phenol formaldehyde and husk of pine nuts. For this, husk particles, paraffin emulsion, ammonium sulfate, and resins, were mixed with a high-shear mixer and then cured by flat-pressing at 4 MPa, 1208C, for 5 min. SEM and optical images revealed good homogenization between resin and husk. DTG and DSC results showed chemical affinity between filler and matrix?tracked by shifts in the DTG peaks of the husk. The UF composites showed higher wettability and water absorption; therefore higher thickness swelling. The UF and PF composites with 30% of resin provided the greatest repellency to water, and the highest mechanical properties. It was possible to prepare composites of UF and PF resins loaded with 70% and 80% of husk from pine nuts. |
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Palavras-Chave: |
Propriedade física. |
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Thesagro: |
Araucária Angustifólia; Casca; Espécie Nativa; Fibra Vegetal; Pinhão; Pinheiro do Paraná; Propriedade Mecânica; Resíduo. |
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Thesaurus Nal: |
Mechanical properties; Natural fibers; Particleboards; Physical properties; Wastes. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02055naa a2200337 a 4500
001 2099067
005 2018-11-09
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1002/pc.23958$2DOI
100 1 $aMATTOS, B. D.
245 $aThermosetting composites prepared using husk of pine nuts from Araucaria angustifolia.$h[electronic resource]
260 $c2018
520 $aThe high consumption of pine nuts as food leads to high amounts of husk dispensed as waste. The incorporation of the husk from pine nut into composites appears as a strategic route to explore the commercialization of the Araucaria angustifolia. The present study aims to prepare and characterize thermosetting composites of urea and phenol formaldehyde and husk of pine nuts. For this, husk particles, paraffin emulsion, ammonium sulfate, and resins, were mixed with a high-shear mixer and then cured by flat-pressing at 4 MPa, 1208C, for 5 min. SEM and optical images revealed good homogenization between resin and husk. DTG and DSC results showed chemical affinity between filler and matrix?tracked by shifts in the DTG peaks of the husk. The UF composites showed higher wettability and water absorption; therefore higher thickness swelling. The UF and PF composites with 30% of resin provided the greatest repellency to water, and the highest mechanical properties. It was possible to prepare composites of UF and PF resins loaded with 70% and 80% of husk from pine nuts.
650 $aMechanical properties
650 $aNatural fibers
650 $aParticleboards
650 $aPhysical properties
650 $aWastes
650 $aAraucária Angustifólia
650 $aCasca
650 $aEspécie Nativa
650 $aFibra Vegetal
650 $aPinhão
650 $aPinheiro do Paraná
650 $aPropriedade Mecânica
650 $aResíduo
653 $aPropriedade física
700 1 $aQUEIROZ, L. M. R. de S. B.
700 1 $aKUMODE, M. M. N.
700 1 $aMAGALHAES, W. L. E.
773 $tPolymer Composites$gv. 39, n. 2, p. 476-483, Feb. 2018.
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Embrapa Florestas (CNPF) |
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| Registros recuperados : 47 | |
| 20. |  | MATTOS, B. D.; GOMES, G. R.; MATOS, M. de; RAMOS, L. P.; MAGALHAES, W. L. E. Consecutive production of hydroalcoholic extracts, carbohydrates derivatives and silica nanoparticles from Equisetum arvense. Waste and Biomass Valorization, v. 9, n. 11, p. 1993-2002, Nov. 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 47 | |
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