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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
26/03/2001 |
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Data da última atualização: |
26/03/2001 |
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Autoria: |
LEHMANN, J.; SCHROTH, G.; TEIXEIRA, W.; WOLFGANG ZECH, W.; CRAVO, M. da S. |
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Título: |
Nutrient and water dynamics in a multi-strata agroforestry system. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO EM SISTEMAS AGROFLORESTAIS, 2., 1998, Belem. Sistemas Agroflorestais no Contexto da Qualidade Ambiental e Competitividade: resumos expandidos. Belem: Embrapa-CPATU, 1998. p.38-41. |
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Idioma: |
Português |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00598naa a2200157 a 4500
001 1300937
005 2001-03-26
008 1998 bl uuuu u00u1 u #d
100 1 $aLEHMANN, J.
245 $aNutrient and water dynamics in a multi-strata agroforestry system.
260 $c1998
700 1 $aSCHROTH, G.
700 1 $aTEIXEIRA, W.
700 1 $aWOLFGANG ZECH, W.
700 1 $aCRAVO, M. da S.
773 $tIn: CONGRESSO BRASILEIRO EM SISTEMAS AGROFLORESTAIS, 2., 1998, Belem. Sistemas Agroflorestais no Contexto da Qualidade Ambiental e Competitividade: resumos expandidos. Belem: Embrapa-CPATU, 1998. p.38-41.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
02/06/2021 |
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Data da última atualização: |
02/06/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
MOURA, C. V. R. de; SOUSA, D. da C.; MOURA, E. M. de; ARAUJO, E. C. E.; SITTOLIN, I. M. |
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Afiliação: |
CARLA VERONICA RODARTE DE MOURA, UFPI; DOUGLAS DA CRUZ SOUSA, UFPI; EDMILSON MIRANDA DE MOURA, UFPI; EUGENIO CELSO EMERITO ARAUJO, CPAMN; ILZA MARIA SITTOLIN, CPAMN. |
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Título: |
New biodegradable composites from starch and fibers of the babassu coconut. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Polímeros, v. 31, n. 1, e2021007, 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
This work aimed to obtain thermoplastic starch composites (TPS) derived from starch and fibers of babassu coconut. The (TPS) was prepared with 40% plasticizer (glycerol). The fibers underwent chemical treatment of alkalinization and bleaching. SEM images and infrared spectra showed that wax, lignin, and hemicellulose were removed from the fiber surface. SEM images of TPS starch showed a smooth and uniform surface, whereas images of the TPSWF composite (washed fiber) showed voids between the fiber and the TPS. This phenomenon was not observed in the SEM images of the composites TPSAF (alkalized fiber) and TPSBF (bleached fiber). The tensile strength and elastic modulus of the composites were higher than the pure TPS matrix. Concerning elongation, composites underwent less elongation than TPS. The mechanical properties found for the TPSWF and TPSAF composites do not differ. However, the mechanical properties of the TPSBF composite were better than the properties of the other composites. |
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Palavras-Chave: |
Babassu; Composites; TPS. |
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Thesagro: |
Amido; Babaçu; Fibra. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/223600/1/NewBiodegradableCompositesBabassu.pdf
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Marc: |
LEADER 01634naa a2200241 a 4500
001 2132156
005 2021-06-02
008 2021 bl uuuu u00u1 u #d
100 1 $aMOURA, C. V. R. de
245 $aNew biodegradable composites from starch and fibers of the babassu coconut.$h[electronic resource]
260 $c2021
520 $aThis work aimed to obtain thermoplastic starch composites (TPS) derived from starch and fibers of babassu coconut. The (TPS) was prepared with 40% plasticizer (glycerol). The fibers underwent chemical treatment of alkalinization and bleaching. SEM images and infrared spectra showed that wax, lignin, and hemicellulose were removed from the fiber surface. SEM images of TPS starch showed a smooth and uniform surface, whereas images of the TPSWF composite (washed fiber) showed voids between the fiber and the TPS. This phenomenon was not observed in the SEM images of the composites TPSAF (alkalized fiber) and TPSBF (bleached fiber). The tensile strength and elastic modulus of the composites were higher than the pure TPS matrix. Concerning elongation, composites underwent less elongation than TPS. The mechanical properties found for the TPSWF and TPSAF composites do not differ. However, the mechanical properties of the TPSBF composite were better than the properties of the other composites.
650 $aAmido
650 $aBabaçu
650 $aFibra
653 $aBabassu
653 $aComposites
653 $aTPS
700 1 $aSOUSA, D. da C.
700 1 $aMOURA, E. M. de
700 1 $aARAUJO, E. C. E.
700 1 $aSITTOLIN, I. M.
773 $tPolímeros$gv. 31, n. 1, e2021007, 2021.
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