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| Registros recuperados : 35 | |
| 21. |  | OLIVEIRA, Y. S. de; NASCIMENTO, A. P. G.; CAMPANHA, R. B.; ANDREANI, L.; RODRIGUES, C. M. Influência da temperatura na oxidação de lignina kraft para a produção de ácidos carboxílicos. In: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 7., 2023, Brasília, DF. Anais... Brasília, DF : Embrapa, 2023. p. 222.| Biblioteca(s): Embrapa Agroenergia. |
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| 22. | | SANTOS, W. R. dos; CARVALHO, F. B. de P.; ANDREANI, L.; VALADARES, L. F. Uso de concentrador solar para secagem de bagaço de cana-de-açúcar. In: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 6., 2020, Brasília, DF. Anais... Brasília, DF: Embrapa, 2020. p. 65-72 il.| Biblioteca(s): Embrapa Agroenergia. |
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| 25. | | LEITE, B.; ALVIM, M. R.; CARVALHO, F. B. de P.; ANDREANI, L.; VALADARES, L. F.; SOUZA JUNIOR, M. T. Avaliação da influência dos extrativos na qualidade das nanofibras obtidas de engaço de dendê. In: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 5., 2018, Brasília, DF. Anais ... Brasília, DF: Embrapa Agroenergia, 2018. p. 53.| Biblioteca(s): Embrapa Agroenergia. |
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| 27. | | MELO, R. W. N.; ANDREANI, L.; RIBEIRO, J. A. de A.; ROCHA, T. L.; LAVIOLA, B. G.; RODRIGUES, C. M. Caracterização química e avaliação nematotóxica de extratos hidroetanólicos de Brassica carinata. In: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 7., 2023, Brasília, DF. Anais... Brasília, DF: Embrapa, 2023. p. 216.| Biblioteca(s): Embrapa Agroenergia. |
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| 29. | | LEITE, B.; ALVIM, M. R.; ANDREANI, L.; CARVALHO, F. B. de P.; VALADARES, L. F.; SOUZA JUNIOR, M. T. Nanocompósitos de PLA e celulose: avaliação das propriedades mecânicas. In: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 5., 2018, Brasília, DF. Anais ... Brasília, DF: Embrapa Agroenergia, 2018. p. 54.| Biblioteca(s): Embrapa Agroenergia. |
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| 32. | | TELES, V. C.; ROLDI, M.; LUZ, S. M.; SANTOS, W. R. dos; ANDREANI, L.; VALADARES, L. F. Obtaining plasticized starch and microfibrillated cellulose from oil palm empty fruit bunches: preparation and properties of the pure materials and their composites. BioResources, v. 16, n. 2, p. 3746-3759, 2021. p. 3746-3759| Biblioteca(s): Embrapa Agroenergia. |
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| 35. | | RODRIGUES, K. B.; SOUZA, A. A.; PEIXOTO, J. de S. G.; SILVA, C. de O. G.; ANDREANI, L.; MENDES, T. D.; VALADARES, L. F.; ABDELNUR, P. V.; SILVA, F. M.; GONCALVES, S. B.; RODRIGUES, D. de S.; SALUM, T. F. C.; DAMASO, M. C. T.; FAVARO, L. C. de L. Produção heteróloga e caracterização funcional das expansinas de cana-de-açúcar SacEXP4 e SacEXP7. In: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 6., 2020, Brasília, DF. Anais... Brasília, DF: Embrapa, 2020. p. 215-223 il.| Biblioteca(s): Embrapa Agroenergia. |
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| Registros recuperados : 35 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
09/04/2021 |
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Data da última atualização: |
09/04/2021 |
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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: |
TELES, V. C.; ROLDI, M.; LUZ, S. M.; SANTOS, W. R. dos; ANDREANI, L.; VALADARES, L. F. |
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Afiliação: |
VALÉRYA CARNEIRO TELES; MARIANA ROLDI, Universidade de Brasília; SANDRA MARIA LUZ, Universidade de Brasília; WELLINGTON RANGEL DOS SANTOS, CNPAE; LARISSA ANDREANI CARVALHO, CNPAE; LEONARDO FONSECA VALADARES, CNPAE. |
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Título: |
Obtaining plasticized starch and microfibrillated cellulose from oil palm empty fruit bunches: preparation and properties of the pure materials and their composites. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
BioResources, v. 16, n. 2, p. 3746-3759, 2021. |
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Páginas: |
p. 3746-3759 |
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DOI: |
DOI: 10.15376/biores.16.2.3746-3759 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Starch and celluloses are biodegradable resources of great importance in terms of marketing. These biopolymers can be used to generate films with interesting mechanical, optical, and thermal properties, which can substitute for plastic films in certain applications, e.g., packaging materials. This study describes the preparation of pure plasticized starch films, prepared from soluble starch and glycerol, and the preparation of microfibrillated cellulose films from oil palm empty fruit bunches fabricated via casting. Composites made of plasticized starch were also prepared with microfibrillated cellulose added in 10% increments. The density, color difference, opacity, morphology, water activity, water affinity, and thermal and mechanical characteristics of the films were investigated. Plasticized starch is a translucent material with contact transparency; it is fragile and has relatively high water and glycerol contents. The thermogravimetric analysis of materials displayed up to four stages of weight loss related to water evaporation, glycerol, starch, and cellulose thermal degradation. As a consequence, the materials with higher cellulose content exhibited better thermal resistance. The composites with 90% of microfibrillated cellulose resulted in increased tensile strength when compared to the pure materials. The pure microfibrillated cellulose presented the highest values of Young modulus. The addition of plasticized starch to microfibrillated cellulose improved the maximum strain of the composites. MenosAbstract: Starch and celluloses are biodegradable resources of great importance in terms of marketing. These biopolymers can be used to generate films with interesting mechanical, optical, and thermal properties, which can substitute for plastic films in certain applications, e.g., packaging materials. This study describes the preparation of pure plasticized starch films, prepared from soluble starch and glycerol, and the preparation of microfibrillated cellulose films from oil palm empty fruit bunches fabricated via casting. Composites made of plasticized starch were also prepared with microfibrillated cellulose added in 10% increments. The density, color difference, opacity, morphology, water activity, water affinity, and thermal and mechanical characteristics of the films were investigated. Plasticized starch is a translucent material with contact transparency; it is fragile and has relatively high water and glycerol contents. The thermogravimetric analysis of materials displayed up to four stages of weight loss related to water evaporation, glycerol, starch, and cellulose thermal degradation. As a consequence, the materials with higher cellulose content exhibited better thermal resistance. The composites with 90% of microfibrillated cellulose resulted in increased tensile strength when compared to the pure materials. The pure microfibrillated cellulose presented the highest values of Young modulus. The addition of plasticized starch to microfibrillated cellulose improved... Mostrar Tudo |
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Palavras-Chave: |
Microfibrillated cellulose; Oil palm empty fruit bunches; Plasticized starch films. |
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Thesagro: |
Amido; Biofilme; Celulose. |
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Thesaurus NAL: |
Cellulose; Mechanical properties; Oil palm products; Starch; Thermal properties. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/222442/1/Obtaining-plasticized-starch-and.pdf
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Marc: |
LEADER 02586naa a2200337 a 4500
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024 7 $aDOI: 10.15376/biores.16.2.3746-3759$2DOI
100 1 $aTELES, V. C.
245 $aObtaining plasticized starch and microfibrillated cellulose from oil palm empty fruit bunches$bpreparation and properties of the pure materials and their composites.$h[electronic resource]
260 $c2021
300 $ap. 3746-3759
520 $aAbstract: Starch and celluloses are biodegradable resources of great importance in terms of marketing. These biopolymers can be used to generate films with interesting mechanical, optical, and thermal properties, which can substitute for plastic films in certain applications, e.g., packaging materials. This study describes the preparation of pure plasticized starch films, prepared from soluble starch and glycerol, and the preparation of microfibrillated cellulose films from oil palm empty fruit bunches fabricated via casting. Composites made of plasticized starch were also prepared with microfibrillated cellulose added in 10% increments. The density, color difference, opacity, morphology, water activity, water affinity, and thermal and mechanical characteristics of the films were investigated. Plasticized starch is a translucent material with contact transparency; it is fragile and has relatively high water and glycerol contents. The thermogravimetric analysis of materials displayed up to four stages of weight loss related to water evaporation, glycerol, starch, and cellulose thermal degradation. As a consequence, the materials with higher cellulose content exhibited better thermal resistance. The composites with 90% of microfibrillated cellulose resulted in increased tensile strength when compared to the pure materials. The pure microfibrillated cellulose presented the highest values of Young modulus. The addition of plasticized starch to microfibrillated cellulose improved the maximum strain of the composites.
650 $aCellulose
650 $aMechanical properties
650 $aOil palm products
650 $aStarch
650 $aThermal properties
650 $aAmido
650 $aBiofilme
650 $aCelulose
653 $aMicrofibrillated cellulose
653 $aOil palm empty fruit bunches
653 $aPlasticized starch films
700 1 $aROLDI, M.
700 1 $aLUZ, S. M.
700 1 $aSANTOS, W. R. dos
700 1 $aANDREANI, L.
700 1 $aVALADARES, L. F.
773 $tBioResources$gv. 16, n. 2, p. 3746-3759, 2021.
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