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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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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
001 2131171
005 2021-04-09
008 2021 bl uuuu u00u1 u #d
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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Registro original: |
Embrapa Agroenergia (CNPAE) |
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| Registros recuperados : 3 | |
| 1. |  | LUZ, S. M.; SOUZA FILHO, A. P. S.; GUILOHN, G. M. S. P.; VILHENA, K. S. S. Atividade alelopática de substâncias químicas isoladas da Acacia mangium e suas variações em função do PH. Planta daninha, Viçosa, MG, v. 28, n. 3, p. 479-487, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 2. | | 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| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agroenergia. |
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| 3. | | FERREIRA, R. C.; SANTOS, J. C. L.; SOUZA, S. C.; SOUZA FILHO, A. P. da S.; RODRIGUES, C. M. I.; LUZ, S. M.; FERREIRA, F. A.; SANTOS, L. S. Bioensaios de alelopatia com extratos hidroalcoólico de Senna alata. In: CONGRESSO BRASILEIRO DE QUÍMICA, 47., 2007, Natal. Recursos não renováveis: anais. Natal: ABQ: UFRN, 2007. Disponível também on-line.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 3 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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