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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
29/04/2022 |
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Data da última atualização: |
29/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SENA NETO, A. R.; CLARO, P. I. C.; SOUZA, F. V. D.; MATTOSO, L. H. C.; MARCONCINI, J. M. |
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Afiliação: |
ALFREDO R. SENA NETO, LNNA; PEDRO I.C. CLARO; FERNANDA VIDIGAL DUARTE SOUZA, CNPMF; LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA; JOSE MANOEL MARCONCINI, CNPDIA. |
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Título: |
Poly(lactic acid) composites reinforced with leaf fibers from ornamental variety of hybrid pineapple (Potyra). |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Polymer Composites, v. 39, n. 11, 2018. |
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Páginas: |
4050-4057 |
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DOI: |
10.1002/pc.24464 |
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Idioma: |
Inglês |
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Conteúdo: |
While there have been many studies of fibers extracted from pineapple leaves as reinforcement in polymer composites, to date, only commercial varieties have been examined. This work aims to investigate the fibers from the leaves of a hybrid pineapple called Potyra as a mechanical reinforcement in a poly(lactic acid) (PLA) matrix. The fibers were pre-treated in a NaOH solution (1 wt%) and were incorporated into the PLA by a torque rheometer mixer followed by twin-screw extrusion. Samples of each composition were injected. The molded composites showed increases of tensile strength from 58.8 to 69.6 MPa, of Young?s modulus from 1.9 to 3.5 GPa, and of impact resistance from 28 to 44 J/m, and showed an increase of 58C in the heat deflection temperature (Abstract Figure). The measured tensile strength and Young?s modulus values are lower than the theoretical values obtained by micromechanics theory due to the pull-out of the matrix fiber and due to the orientation of the fibers in the composites. It was concluded that the pineapple hybrid fibers have potential for use as mechanical reinforcement in green composites. POLYM. COMPOS., 00:000?000, 2017. VC 2017 Society of Plastics Engineers |
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Thesagro: |
Abacaxi. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1142507/1/P-Polylatic-acid-composites-reinforced....pdf
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Marc: |
LEADER 01818naa a2200205 a 4500
001 2142507
005 2022-04-29
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1002/pc.24464$2DOI
100 1 $aSENA NETO, A. R.
245 $aPoly(lactic acid) composites reinforced with leaf fibers from ornamental variety of hybrid pineapple (Potyra).$h[electronic resource]
260 $c2018
300 $a4050-4057
520 $aWhile there have been many studies of fibers extracted from pineapple leaves as reinforcement in polymer composites, to date, only commercial varieties have been examined. This work aims to investigate the fibers from the leaves of a hybrid pineapple called Potyra as a mechanical reinforcement in a poly(lactic acid) (PLA) matrix. The fibers were pre-treated in a NaOH solution (1 wt%) and were incorporated into the PLA by a torque rheometer mixer followed by twin-screw extrusion. Samples of each composition were injected. The molded composites showed increases of tensile strength from 58.8 to 69.6 MPa, of Young?s modulus from 1.9 to 3.5 GPa, and of impact resistance from 28 to 44 J/m, and showed an increase of 58C in the heat deflection temperature (Abstract Figure). The measured tensile strength and Young?s modulus values are lower than the theoretical values obtained by micromechanics theory due to the pull-out of the matrix fiber and due to the orientation of the fibers in the composites. It was concluded that the pineapple hybrid fibers have potential for use as mechanical reinforcement in green composites. POLYM. COMPOS., 00:000?000, 2017. VC 2017 Society of Plastics Engineers
650 $aAbacaxi
700 1 $aCLARO, P. I. C.
700 1 $aSOUZA, F. V. D.
700 1 $aMATTOSO, L. H. C.
700 1 $aMARCONCINI, J. M.
773 $tPolymer Composites$gv. 39, n. 11, 2018.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
14/05/2012 |
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Data da última atualização: |
14/05/2012 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
NUNES, F. L.; RODRIGUES, W. N.; FERRAO, M. A. G.; FONSECA, A. F. A. da; TOMAZ, M. A. |
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Afiliação: |
FABIANA LATARO NUNES, IAC/APTA; WAGNER NUNES RODRIGUES, CCA/UFES; MARIA AMELIA GAVA FERRAO, SAPC; AYMBIRE FRANCISCO A DA FONSECA, SAPC; MARCELO ANTONIO TOMAZ, CCA/UFES. |
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Título: |
Estimativas de parâmetros genéticos para tamanho de frutos de café conilon. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE PESQUISA CAFEEIROAS, 36., 2010, Guarapari. Anais...Brasília, DF: Embrapa Café, 2010. |
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Idioma: |
Português |
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Palavras-Chave: |
Café conilon; Ffruto de café; Melhoramento genético. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/59232/1/Estimativa-de-parametros.pdf
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Marc: |
LEADER 00632nam a2200181 a 4500
001 1924486
005 2012-05-14
008 2010 bl uuuu u00u1 u #d
100 1 $aNUNES, F. L.
245 $aEstimativas de parâmetros genéticos para tamanho de frutos de café conilon.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE PESQUISA CAFEEIROAS, 36., 2010, Guarapari. Anais...Brasília, DF: Embrapa Café$c2010
653 $aCafé conilon
653 $aFfruto de café
653 $aMelhoramento genético
700 1 $aRODRIGUES, W. N.
700 1 $aFERRAO, M. A. G.
700 1 $aFONSECA, A. F. A. da
700 1 $aTOMAZ, M. A.
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Embrapa Café (CNPCa) |
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