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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria Tropical; Embrapa Amapá. |
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Data corrente: |
28/11/2021 |
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Data da última atualização: |
24/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GUEDES, C. E. G.; OLIVEIRA, D. N. P. S. de; BEZERRA, J. B.; PENIDO, C. A. F. de O.; FERREIRA, N. S.; BORGES, W. L.; BUFALINO, L.; SOUZA, T. M. |
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Afiliação: |
CARLOS EDUARDO GOUVEIA GUEDES, UNIFAP; DHIMITRIUS NEVES PARAGUASSÚ SMITH DE OLIVEIRA, POLITEC-AP; JEFFERSON BEZERRA BEZERRA, UNIFAP; CIRO AUGUSTO FERNANDES DE OLIVEIRA PENIDO, POLITEC-AP; NILSON SANTOS FERREIRA, UFS; WARDSSON LUSTRINO BORGES, CPAF-AP; LINA BUFALINO, UFRA; TIAGO MARCOLINO SOUZA, UEAP. |
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Título: |
Exploiting the Amazonian açaí palm leaves potential as reinforcement for cement composites through alkali and bleaching treatments. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Natural Fibers, v. 1, p. 1-14, 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Recent investigations proposed alternatives for utilization of Açaí (Euterpe oleracea Mart.) fruit wastes, seeds, and lignocellulosic fibers. However, Açaí leaves may also be obtained without harvesting the palms and could be used in higher value-added products. Alkali reaction (1% and 5% of NaOH), different temperatures (70°C, 80°C, and 100°C), and bleaching were combined to produce fibres from the Açaí leaves. Scanning electron microscopy, X-ray diffraction, and thermogravimetry were used to evaluate the effect of treatments on fibers, whereas X-ray diffraction and calorimetry were employed to characterize Portland cement pastes containing fibers. Results indicated that Açaí leaves could be transformed into short-length fibers with improved degrading temperature. Alkali treatment at 5% sodium hydroxide (90°C) and bleaching increased fibers? crystallinity and showed efficiency in removing non-cellulosic components. Cement paste evaluation also indicated that fibers treated at 5% NaOH solution caused fewer changes in calorimetric profile and therefore present a greater potential for cement-based composites. |
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Palavras-Chave: |
Ceramic matrix; Fiber morphology; Portland cement. |
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Thesagro: |
Açaí. |
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Thesaurus Nal: |
Biocomposites; Biomass; Thermal stability. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/228186/1/CPAF-AP-2021-Exploiting-The-Amazonian-Acai.pdf
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Marc: |
LEADER 02004naa a2200289 a 4500
001 2136697
005 2022-06-24
008 2021 bl uuuu u00u1 u #d
100 1 $aGUEDES, C. E. G.
245 $aExploiting the Amazonian açaí palm leaves potential as reinforcement for cement composites through alkali and bleaching treatments.$h[electronic resource]
260 $c2021
520 $aRecent investigations proposed alternatives for utilization of Açaí (Euterpe oleracea Mart.) fruit wastes, seeds, and lignocellulosic fibers. However, Açaí leaves may also be obtained without harvesting the palms and could be used in higher value-added products. Alkali reaction (1% and 5% of NaOH), different temperatures (70°C, 80°C, and 100°C), and bleaching were combined to produce fibres from the Açaí leaves. Scanning electron microscopy, X-ray diffraction, and thermogravimetry were used to evaluate the effect of treatments on fibers, whereas X-ray diffraction and calorimetry were employed to characterize Portland cement pastes containing fibers. Results indicated that Açaí leaves could be transformed into short-length fibers with improved degrading temperature. Alkali treatment at 5% sodium hydroxide (90°C) and bleaching increased fibers? crystallinity and showed efficiency in removing non-cellulosic components. Cement paste evaluation also indicated that fibers treated at 5% NaOH solution caused fewer changes in calorimetric profile and therefore present a greater potential for cement-based composites.
650 $aBiocomposites
650 $aBiomass
650 $aThermal stability
650 $aAçaí
653 $aCeramic matrix
653 $aFiber morphology
653 $aPortland cement
700 1 $aOLIVEIRA, D. N. P. S. de
700 1 $aBEZERRA, J. B.
700 1 $aPENIDO, C. A. F. de O.
700 1 $aFERREIRA, N. S.
700 1 $aBORGES, W. L.
700 1 $aBUFALINO, L.
700 1 $aSOUZA, T. M.
773 $tJournal of Natural Fibers$gv. 1, p. 1-14, 2021.
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Registro original: |
Embrapa Amapá (CPAF-AP) |
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| Registros recuperados : 13 | |
| 5. |  | FERREIRA, N. S.; OLIVEIRA, L. H. B.; AGRELLI, V.; OLIVEIRA, A. F. de; NOGUEIRA, A. R. de A.; OLIVEIRA, A.; GONZALEZ, M. H. Bioaccumulation and acute toxicity of As(III) and As(V) in Nile tilapia (Oreochromis niloticus). Chemosphere, v.217, p.349-354, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
|    |
| 6. | | FERREIRA, N. S.; OLIVEIRA, L. H. B.; OLIVEIRA, A. P.; OLIVEIRA, A. F. de; NOGUEIRA, A. R. de A.; GONZALEZ, M. H. Bioacumulação de As inorgânico em tilápias (Oreochromis niloticus). In: ENCONTRO BRASILEIRO SOBRE ESPECIAÇÃO QUÍMICA, 5., 2017, Águas de Lindóia, SP. Anais... Águas de Lindóia, SP: EspeQBrasil, 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
|  |
| 7. | | FERREIRA, N. S.; MATOS, G. F.; ROUWS, J. R. C.; REIS, V. M.; MENESES, C. H. G. de; ROUWS, L. F. M. Rhizobium sp. (BR 10268) colonizes internal sugarcane tissues, produces phytohormones and accelerates mini-sett germination In: SYMPOSIUM ON BIOLOGICAL NITROGEN FIXATION, 16., LATINAMERICAN WORKSHOP OF PGPR, 4., RELARE, 19., 2018, Foz do Iguaçu. Book of abstract....Foz do Iguaçu: Emprapa, 2018. p. 42 Session 3, Poster III.7| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 8. | | FERREIRA, N. S.; MATOS, G. F.; MENESES, C. H. G. de; REIS, V. M.; ROUWS, J. R. C.; SCHWAB, S.; BALDANI, J. I.; ROUWS, L. F. M. Interaction of phytohormone-producing rhizobia with sugarcane mini-setts and their effect on plant development Plant and Soil, Published online 3 January, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 9. | | MATOS, F. F.; SILVA, T. P.; FERREIRA, N. S.; MENEZES JUNIOR, I. A.; DIAMANTINO, C. F.; ROUWS, J. R. C.; BALDANI, J. I.; ROUWS, L. F. M. Selection of Bradyhizobium strains that benefi t different sugarcane growth variables. In: SYMPOSIUM ON BIOLOGICAL NITROGEN FIXATION, 16.; LATINAMERICAN WORKSHOP OF PGPR, 4.; RELARE, 19., 2018, Foz do Iguaçu. Book of abstract....Foz do Iguaçu: Embrapa, 2018. p. 80 Session 6, Poster VI.34| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 10. | | SOUZA, M. L. C.; MATOS, G. F.; FERREIRA, N. S.; VIDAL, M. S.; REIS, V. M.; BALDANI, J. I.; ROUWS, L. F. M. Root colonization capability versus sugarcane growth promotion effects of some Bradyrhizobium strains. In: In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 30., 2019, Maceió. Resumos... São Paulo, SP: Sociedade Brasileira de Microbiologia -SBM, 2019| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 11. | | LOUREIRO, D. P.; ARAGÃO. A. R.; GUIMARÃES, N. F.; FERREIRA, N. S.; ALVES, G. C.; VIDAL, M. S.; ROUWS, L. F. M.; REIS, V. M. Root development of micropropagated sugarcane inoculated with different species of diazotrophic bacteria. In: SYMPOSIUM ON BIOLOGICAL NITROGEN FIXATION, 16.; LATINAMERICAN WORKSHOP OF PGPR, 4.; RELARE, 19., 2018, Foz do Iguaçu. Book of abstract....Foz do Iguaçu: Embrapa, 2018. p. 77 Session 6, Poster VI.26| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 12. | | GUIMARÃES, N. F.; FERREIRA, N. S.; LOUREIRO, D. P.; ARAGÃO, A. R.; ALVES, G. C.; VIDAL, M. S.; ROUWS, L. F. M.; REIS, V. M. Growth of micropropagated sugarcane seedlings inoculated with fi fteen strains of diazotrophic bacteria; In: SYMPOSIUM ON BIOLOGICAL NITROGEN FIXATION, 16.; LATINAMERICAN WORKSHOP OF PGPR, 4.; RELARE, 19., 2018, Foz do Iguaçu. Book of abstract....Foz do Iguaçu: Embrapa, 2018. p. 74 Session 6, Poster VI.21| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 13. | | GUEDES, C. E. G.; OLIVEIRA, D. N. P. S. de; BEZERRA, J. B.; PENIDO, C. A. F. de O.; FERREIRA, N. S.; BORGES, W. L.; BUFALINO, L.; SOUZA, T. M. Exploiting the Amazonian açaí palm leaves potential as reinforcement for cement composites through alkali and bleaching treatments. Journal of Natural Fibers, v. 1, p. 1-14, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Agroindústria Tropical; Embrapa Amapá. |
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| Registros recuperados : 13 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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