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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos; Embrapa Florestas. |
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Data corrente: |
04/11/2020 |
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Data da última atualização: |
09/02/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FURTADO, M. R.; MATTA, V. M. da; CARVALHO, C. W. P. de; MAGALHAES, W. L. E.; ROSSI, A. L.; TONON, R. V. |
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Afiliação: |
Maraysa R. Furtado, Instituto de Química, Universidade Federal do Rio de Janeiro; VIRGINIA MARTINS DA MATTA, CTAA; CARLOS WANDERLEI PILER DE CARVALHO, CTAA; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; André L. Rossi, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro; RENATA VALERIANO TONON, CTAA. |
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Título: |
Characterization of spray-dried nanofibrillated cellulose and effect of different homogenization methods on the stability and rheological properties of the reconstituted suspension. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Cellulose, v. 28, n. 1, p. 207-221, Jan. 2021. |
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DOI: |
https://doi.org/10.1007/s10570-020-03516-9 |
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Idioma: |
Inglês |
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Conteúdo: |
In the present study, a suspension of nanofibrillated cellulose from eucalyptus was spraydried in order to obtain a powdered material that could be easily transported and stored. The original suspension and the dried material were characterized for their physical, morphological and thermal properties. An increase in crystallinity and reduction in thermal stability were observed after drying. In addition, the fibrils size passed from nano to micro scale The powder obtained was rehydrated and homogenized by two methods: rotor-stator homogenization (5000, 10,000 and 15,000 rpm) and ultrasound (10, 30 and 50% maximum amplitude), during 3 and 5 min, in order to verify the possibility of obtaining a stable reconstituted suspension comparable to the original one. Higher treatment intensities resulted in suspensions with higher viscosity and stability. The suspension homogenized by ultrasound at 50% amplitude for 5 minutes was the most stable one and restored the nano dimensions of the original suspension. Both the original and the reconstituted suspensions showed a shear thinning and ??gel-like?? behavior. Higher UltraTurrax speed and ultrasound amplitude resulted in higher viscoelastic modulus (G0 and G00), although these values were lower than those found in the initial nanocellulose suspension. |
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Palavras-Chave: |
Morphology; Nanocellulose; Nanocelulose; Propriedade térmica; Reconstitution; Reologia. |
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Thesaurus Nal: |
Rheology; Spray drying; Thermal properties. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02282naa a2200301 a 4500
001 2126256
005 2021-02-09
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10570-020-03516-9$2DOI
100 1 $aFURTADO, M. R.
245 $aCharacterization of spray-dried nanofibrillated cellulose and effect of different homogenization methods on the stability and rheological properties of the reconstituted suspension.$h[electronic resource]
260 $c2021
520 $aIn the present study, a suspension of nanofibrillated cellulose from eucalyptus was spraydried in order to obtain a powdered material that could be easily transported and stored. The original suspension and the dried material were characterized for their physical, morphological and thermal properties. An increase in crystallinity and reduction in thermal stability were observed after drying. In addition, the fibrils size passed from nano to micro scale The powder obtained was rehydrated and homogenized by two methods: rotor-stator homogenization (5000, 10,000 and 15,000 rpm) and ultrasound (10, 30 and 50% maximum amplitude), during 3 and 5 min, in order to verify the possibility of obtaining a stable reconstituted suspension comparable to the original one. Higher treatment intensities resulted in suspensions with higher viscosity and stability. The suspension homogenized by ultrasound at 50% amplitude for 5 minutes was the most stable one and restored the nano dimensions of the original suspension. Both the original and the reconstituted suspensions showed a shear thinning and ??gel-like?? behavior. Higher UltraTurrax speed and ultrasound amplitude resulted in higher viscoelastic modulus (G0 and G00), although these values were lower than those found in the initial nanocellulose suspension.
650 $aRheology
650 $aSpray drying
650 $aThermal properties
653 $aMorphology
653 $aNanocellulose
653 $aNanocelulose
653 $aPropriedade térmica
653 $aReconstitution
653 $aReologia
700 1 $aMATTA, V. M. da
700 1 $aCARVALHO, C. W. P. de
700 1 $aMAGALHAES, W. L. E.
700 1 $aROSSI, A. L.
700 1 $aTONON, R. V.
773 $tCellulose$gv. 28, n. 1, p. 207-221, Jan. 2021.
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Embrapa Agroindústria de Alimentos (CTAA) |
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| 1. |  | FRANCESCHINELLI, E. V.; ALMEIDA, E. A. B.; ANTONINI, Y.; CABRAL, B. C.; CARMO, R. M. do; DAMASCENO, A.; FONTENELLE, J. C. R.; GARCIA, V. L. A.; GUILHERME, M. S.; LAPS, R. R.; LEITÃO, G. G.; LEITÃO, S. G.; MIKICH, S. B.; MOREIRA, D. de L.; NASCIMENTO, M. T.; NEMÉSIO, A.; RIBON, R.; SILVEIRA, F. A.; VIDIGAL, T. H. D. A. Interações entre animais e plantas. In: RAMBALDI, D. M.; OLIVEIRA, D. A. S. de (Org.). Fragmentação de ecossistemas: causas, efeitos sobre a biodiversidade e recomendações de políticas públicas. Brasília, DF: Ministério do Meio Ambiente, Secretaria de Biodiversidade e Florestas, 2003. p. 275-295. (Biodiversidade, 6).| Tipo: Capítulo em Livro Técnico-Científico | Circulação/Nível: -- - -- |
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