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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
15/01/2015 |
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Data da última atualização: |
26/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SENA NETO, A. R.; ARAUJO, M. A. M.; BARBOZA, R. M. P.; FONSECA, A. S.; TONOLI, G. H. D.; SOUZA, F. V. D.; MATTOSO, L. H. C.; MARCONCINI, J. M. |
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Afiliação: |
ALFREDO R. SENA NETO, UFSCar; MARCO A.M. ARAUJO, UFSCar; RAIZA M.P. BARBOZA, UFSCar; ALESSANDRA S. FONSECA, UFLA; GUSTAVO H.D. TONOLI, UFLA; FERNANDA VIDIGAL DUARTE SOUZA, CNPMF; LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA; JOSE MANOEL MARCONCINI, CNPDIA. |
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Título: |
Comparative study of 12 pineapple leaf fiber varieties for use asmechanical reinforcement in polymer composites. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Industrial Crops and Products, v. 64, p. 68-78, 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
Vegetable fiber reinforced polymer composites have enormous potential to replace materials originatedfrom non-renewable resources. For an adequate use of vegetable fibers as reinforcements, however, therelationships between technological properties and chemical, structural and morphological characteris-tics of the fibers must be fully understood. In this work, fibers from 12 different varieties of pineapple(Ananas genus) were characterized on their morphology, structure, chemical composition, mechanicaland thermal properties. The elastic modulus ranged from 37 to 86 GPa, the tensile strength from 629 to1309 MPa, and the onset oxidation temperature from 240 to 272ºC; indicating the potential of using allselected pineapple fibers as reinforcing fillers (depending on the polymer matrix and processing method).Direct correlations were observed between the thermo-mechanical properties of the fibers and theirchemical features, such as holocellulose and cellulose contents, and also the cellulose crystallinity index.The mechanical properties showed an inversely proportional relation with the lignin content and diam-eter of the fiber bundle. These correlations provided indexes for the direct selection and/or for a geneticimprovement program of the Ananas genus for the development of pineapples whose fibers may beadequate as mechanical reinforcement in polymer composite. An example of methodology is presented,aiming to help with materials selection within the group of vegetable fibers used in composites. MenosVegetable fiber reinforced polymer composites have enormous potential to replace materials originatedfrom non-renewable resources. For an adequate use of vegetable fibers as reinforcements, however, therelationships between technological properties and chemical, structural and morphological characteris-tics of the fibers must be fully understood. In this work, fibers from 12 different varieties of pineapple(Ananas genus) were characterized on their morphology, structure, chemical composition, mechanicaland thermal properties. The elastic modulus ranged from 37 to 86 GPa, the tensile strength from 629 to1309 MPa, and the onset oxidation temperature from 240 to 272ºC; indicating the potential of using allselected pineapple fibers as reinforcing fillers (depending on the polymer matrix and processing method).Direct correlations were observed between the thermo-mechanical properties of the fibers and theirchemical features, such as holocellulose and cellulose contents, and also the cellulose crystallinity index.The mechanical properties showed an inversely proportional relation with the lignin content and diam-eter of the fiber bundle. These correlations provided indexes for the direct selection and/or for a geneticimprovement program of the Ananas genus for the development of pineapples whose fibers may beadequate as mechanical reinforcement in polymer composite. An example of methodology is presented,aiming to help with materials selection within the group of vegetable fibers ... Mostrar Tudo |
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Thesaurus Nal: |
Pineapples. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02192naa a2200217 a 4500
001 2005621
005 2023-05-26
008 2015 bl uuuu u00u1 u #d
100 1 $aSENA NETO, A. R.
245 $aComparative study of 12 pineapple leaf fiber varieties for use asmechanical reinforcement in polymer composites.$h[electronic resource]
260 $c2015
520 $aVegetable fiber reinforced polymer composites have enormous potential to replace materials originatedfrom non-renewable resources. For an adequate use of vegetable fibers as reinforcements, however, therelationships between technological properties and chemical, structural and morphological characteris-tics of the fibers must be fully understood. In this work, fibers from 12 different varieties of pineapple(Ananas genus) were characterized on their morphology, structure, chemical composition, mechanicaland thermal properties. The elastic modulus ranged from 37 to 86 GPa, the tensile strength from 629 to1309 MPa, and the onset oxidation temperature from 240 to 272ºC; indicating the potential of using allselected pineapple fibers as reinforcing fillers (depending on the polymer matrix and processing method).Direct correlations were observed between the thermo-mechanical properties of the fibers and theirchemical features, such as holocellulose and cellulose contents, and also the cellulose crystallinity index.The mechanical properties showed an inversely proportional relation with the lignin content and diam-eter of the fiber bundle. These correlations provided indexes for the direct selection and/or for a geneticimprovement program of the Ananas genus for the development of pineapples whose fibers may beadequate as mechanical reinforcement in polymer composite. An example of methodology is presented,aiming to help with materials selection within the group of vegetable fibers used in composites.
650 $aPineapples
700 1 $aARAUJO, M. A. M.
700 1 $aBARBOZA, R. M. P.
700 1 $aFONSECA, A. S.
700 1 $aTONOLI, G. H. D.
700 1 $aSOUZA, F. V. D.
700 1 $aMATTOSO, L. H. C.
700 1 $aMARCONCINI, J. M.
773 $tIndustrial Crops and Products$gv. 64, p. 68-78, 2015.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
24/07/2003 |
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Data da última atualização: |
24/07/2003 |
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Autoria: |
PEREIRA, J. C. |
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Título: |
Os microrganismos e os metais pesados do solo. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Seropédica: Embrapa Agrobiologia, 2001. |
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Páginas: |
14 p. |
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Série: |
(Embrapa Agrobiologia. Documentos, 132). |
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ISSN: |
1517-8498 |
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Idioma: |
Português |
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Conteúdo: |
O Solo como ambiente dos microrganismos. Equilíbrio microbiológico. Fatores ambientais abióticos. Metais pesados Transformações microbianas dos metais pesados. Metais pesados e as simbioses radiculares. Micorrizas. Simbiose leguminosa-rizóbio. Métodos microbiológicos de avaliação da contaminação do solo por metais pesados. Considerações finais. |
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Thesagro: |
Leguminosa; Metal Pesado; Micorriza; Microrganismo; Rhizobium; Simbiose; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00938nam a2200229 a 4500
001 1622558
005 2003-07-24
008 2001 bl uuuu u0uu1 u #d
022 $a1517-8498
100 1 $aPEREIRA, J. C.
245 $aOs microrganismos e os metais pesados do solo.
260 $aSeropédica: Embrapa Agrobiologia$c2001
300 $a14 p.
490 $a(Embrapa Agrobiologia. Documentos, 132).
520 $aO Solo como ambiente dos microrganismos. Equilíbrio microbiológico. Fatores ambientais abióticos. Metais pesados Transformações microbianas dos metais pesados. Metais pesados e as simbioses radiculares. Micorrizas. Simbiose leguminosa-rizóbio. Métodos microbiológicos de avaliação da contaminação do solo por metais pesados. Considerações finais.
650 $aLeguminosa
650 $aMetal Pesado
650 $aMicorriza
650 $aMicrorganismo
650 $aRhizobium
650 $aSimbiose
650 $aSolo
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