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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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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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Embrapa Meio-Norte (CPAMN) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
13/07/1999 |
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Data da última atualização: |
13/07/1999 |
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Autoria: |
SOUZA, P. I. M.; SPEHAR, C. R.; MOREIRA, C. T.; URBEN FILHO, G. |
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Título: |
Technology to extend soybean cultivation to the tropical savannas of Brazil. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 5., 1994, Chiang Mai, Thailand. Soybean feeds the world: proceedings. Bangkok: Kasetsart University Press, 1997. |
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Páginas: |
p.478-481. |
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Idioma: |
Inglês |
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Conteúdo: |
The potential areas for soybean cultivation in Brazil were located in the low latitude tropical region, for which there was no technology. The Brazilian savannas (cerrados) are characterized by low fertility soil (oxisols), definite rainy season and suitable temperature for plant growth. This region has become a major grain producer in the country, responding for about 50% of national soybean production. It required a series of modifications in crop management to adapt into the new frontier. Among the major technologies are varietal selection for long juvenile period; selection of acid-soil adapted strains of nitrogen-fixing bacteria; definition of suitable sowing and havest dates; fertilization and soil management to increase production and reduce the effects of dry spells; rotation with other crops to reduce the effects of disease and pests. The present work aimed to discuss these research contributions, pointing out the possibilities of their utilization in similar regions of the world. |
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Palavras-Chave: |
Cultivation; Cultivo. |
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Thesagro: |
Cerrado; Glycine Max; Soja; Tecnologia. |
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Thesaurus NAL: |
soybeans; technology. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01781naa a2200265 a 4500
001 1545368
005 1999-07-13
008 1997 bl uuuu u00u1 u #d
100 1 $aSOUZA, P. I. M.
245 $aTechnology to extend soybean cultivation to the tropical savannas of Brazil.
260 $c1997
300 $ap.478-481.
520 $aThe potential areas for soybean cultivation in Brazil were located in the low latitude tropical region, for which there was no technology. The Brazilian savannas (cerrados) are characterized by low fertility soil (oxisols), definite rainy season and suitable temperature for plant growth. This region has become a major grain producer in the country, responding for about 50% of national soybean production. It required a series of modifications in crop management to adapt into the new frontier. Among the major technologies are varietal selection for long juvenile period; selection of acid-soil adapted strains of nitrogen-fixing bacteria; definition of suitable sowing and havest dates; fertilization and soil management to increase production and reduce the effects of dry spells; rotation with other crops to reduce the effects of disease and pests. The present work aimed to discuss these research contributions, pointing out the possibilities of their utilization in similar regions of the world.
650 $asoybeans
650 $atechnology
650 $aCerrado
650 $aGlycine Max
650 $aSoja
650 $aTecnologia
653 $aCultivation
653 $aCultivo
700 1 $aSPEHAR, C. R.
700 1 $aMOREIRA, C. T.
700 1 $aURBEN FILHO, G.
773 $tIn: WORLD SOYBEAN RESEARCH CONFERENCE, 5., 1994, Chiang Mai, Thailand. Soybean feeds the world: proceedings. Bangkok: Kasetsart University Press, 1997.
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