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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
08/03/2005 |
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Data da última atualização: |
09/03/2005 |
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Autoria: |
FERREIRA, E. BARRIGOSSI, J. A. F. |
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Título: |
Emergência de plântulas em espiguetas de panículas de arroz irrigado infestadas com Oebalus poecilus (Dallas, 1851) (Heteroptera: Pentatomidae). |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA 20., 2004, Gramado. Programa e resumos...Gramado: Sociedade Entomológica do Brasil, 2004. |
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Páginas: |
p. 590. |
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Idioma: |
Português |
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Notas: |
Resumos. |
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Palavras-Chave: |
Irrigado; Percevejo das panículas; Perda qualitativa. |
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Thesagro: |
Arroz; Oryza Sativa. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00704naa a2200193 a 4500
001 1213010
005 2005-03-09
008 2004 bl uuuu u00u1 u #d
100 1 $aFERREIRA, E. BARRIGOSSI, J. A. F.
245 $aEmergência de plântulas em espiguetas de panículas de arroz irrigado infestadas com Oebalus poecilus (Dallas, 1851) (Heteroptera$bPentatomidae).
260 $c2004
300 $ap. 590.
500 $aResumos.
650 $aArroz
650 $aOryza Sativa
653 $aIrrigado
653 $aPercevejo das panículas
653 $aPerda qualitativa
773 $tIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA 20., 2004, Gramado. Programa e resumos...Gramado: Sociedade Entomológica do Brasil, 2004.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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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: |
12/01/2022 |
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Data da última atualização: |
04/04/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
PROTZEK, G. R.; MAGALHAES, W. L. E.; BERTI, L. F.; AZEVEDO, E. C. |
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Afiliação: |
GIULIANA RIBEIRO PROTZEK, Programa de pós-graduação da UTFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; LUCAS FREITAS BERTI, Programa de pós-graduação da UTFPR; ELAINE CRISTINA AZEVEDO, Programa de pós-graduação da UTFPR. |
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Título: |
On mechanical behavior of pine nut shell and polyurethane derived from castor oil green composite. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Journal of Natural Fibers, v. 19, n. 14, p. 7454-7469, 2022. |
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DOI: |
https://doi.org/10.1080/15440478.2021.1947936 |
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Idioma: |
Inglês |
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Conteúdo: |
Natural fibres reinforced polymeric composites are examples of green composites. Commodities polymers derived from fossil sources have volatile organic compounds in their compositions. Polyurethane derived from castor oil is produced from renewable sources, it has no volatile organic compounds in its composition and presents biodegradability. This study aims to evaluate physical-, mechanical- and thermal properties of composites of Araucaria pine nut shell vegetable fibres as reinforcement and polyurethane derived from castor oil (PU) as matrix. The composites were produced with 20 wt.%, 35 wt.% and 50 wt.% of PU. The 100% PU (used as control samples) properties were assessed by flexural strength, thermogravimetric analysis (TGA) and Fourier-transform infrared spectroscopy (FTIR). Composites panels properties were assessed by the following techniques/approaches volumetric density, water absorption, thickness swelling, flexural strength, TGA, FTIR and scanning electron microscopy (SEM). Composites with 35%PU presented flexural strength of 51.55 MPa, a density of 1018 kg/m³, water absorption of 7.95% and swelling in thickness over 24 hours of 5.36%, these results are better when compared to similar composites made with pine nut shell and thermoset polymer. The study focused on how the fibre-matrix adhesion at the interface plays a role in the composite reinforcement. |
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Palavras-Chave: |
Casca de pinhão; Composite; Fiber/ matrix interface; Pine nut shell; Poliuretano. |
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Thesagro: |
Mamona; Óleo; Propriedade Mecânica. |
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Thesaurus NAL: |
Castor oil; Mechanical properties; Polyurethanes. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02293naa a2200301 a 4500
001 2139048
005 2023-04-04
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/15440478.2021.1947936$2DOI
100 1 $aPROTZEK, G. R.
245 $aOn mechanical behavior of pine nut shell and polyurethane derived from castor oil green composite.$h[electronic resource]
260 $c2022
520 $aNatural fibres reinforced polymeric composites are examples of green composites. Commodities polymers derived from fossil sources have volatile organic compounds in their compositions. Polyurethane derived from castor oil is produced from renewable sources, it has no volatile organic compounds in its composition and presents biodegradability. This study aims to evaluate physical-, mechanical- and thermal properties of composites of Araucaria pine nut shell vegetable fibres as reinforcement and polyurethane derived from castor oil (PU) as matrix. The composites were produced with 20 wt.%, 35 wt.% and 50 wt.% of PU. The 100% PU (used as control samples) properties were assessed by flexural strength, thermogravimetric analysis (TGA) and Fourier-transform infrared spectroscopy (FTIR). Composites panels properties were assessed by the following techniques/approaches volumetric density, water absorption, thickness swelling, flexural strength, TGA, FTIR and scanning electron microscopy (SEM). Composites with 35%PU presented flexural strength of 51.55 MPa, a density of 1018 kg/m³, water absorption of 7.95% and swelling in thickness over 24 hours of 5.36%, these results are better when compared to similar composites made with pine nut shell and thermoset polymer. The study focused on how the fibre-matrix adhesion at the interface plays a role in the composite reinforcement.
650 $aCastor oil
650 $aMechanical properties
650 $aPolyurethanes
650 $aMamona
650 $aÓleo
650 $aPropriedade Mecânica
653 $aCasca de pinhão
653 $aComposite
653 $aFiber/ matrix interface
653 $aPine nut shell
653 $aPoliuretano
700 1 $aMAGALHAES, W. L. E.
700 1 $aBERTI, L. F.
700 1 $aAZEVEDO, E. C.
773 $tJournal of Natural Fibers$gv. 19, n. 14, p. 7454-7469, 2022.
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