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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
30/12/2024 |
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Data da última atualização: |
30/12/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LEITE, L. S. F.; Le GARS, M.; AZEREDO, H. M. C. de; MOREIRA, F. K. V.; MATTOSO, L. H. C.; BRAS, J. |
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Afiliação: |
FEDERAL UNIVERSITY OF SAO CARLOS; UNIVERSITY GRENOBLE ALPES, CNRS; HENRIETTE MONTEIRO C DE AZEREDO, CNPDIA; FEDERAL UNIVERSITY OF SAO CARLOS; LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA; UNIVERSITY GRENOBLE ALPES, CNRS. |
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Título: |
Insights into the effect of carboxylated cellulose nanocrystals on mechanical and barrier properties of gelatin films for flexible packaging applications. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
International Journal of Biological Macromolecules, v. 280, 135726, 2024. |
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Páginas: |
1 - 10 |
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ISSN: |
0141-8130 |
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DOI: |
https://doi.org/10.1016/j.ijbiomac.2024.135726 |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, gelatin/carboxylated cellulose nanocrystal (cCNC) bionanocomposite films were developed as an eco-friendly alternative to non-biodegradable flexible plastic packaging. Cellulose nanocrystals were modified by 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidation (cCNC) to strategically interact with amino groups present in the gelatin macromolecular backbone. Gelatin/cCNC bionanocomposite films (0.5–6.0 wt% cCNC) obtained by solution casting were transparent to visible light while displayed high UV-blocking properties. The chemical compatibility between gelatin and cCNC was deepened by electrostatic COO− /NH3 + interactions, as detected by FTIR spectroscopy and morphologically indicated by scanning electron microscopy (SEM). Accordingly, Young’s modulus and tensile strength of films were largely increased by 80 and 64 %, respectively, specifically near the cCNC percolation threshold (4 wt%), whereas the water vapor permeability (WVP) was reduced by 52 % at the optimum 6.0 wt% cCNC content in relation to the non-reinforced gelatin matrix (0.10 vs. 0.18 g H2O mm m− 2 h− 1 kPa− 1 ). The oxygen transmission rates (OTR) of the gelatin/cCNC bionanocomposites were < 0.01 cm3 m-2 day− 1 , making them technically competitive to most promising biopolymers like polycaprolactone (PCL) and poly(lactic acid) (PLA). This study reveals how TEMPO-oxidized cellulose nanocrystals can broaden the performance of biodegradable gelatin films for use in packaging. The gelatin/cCNC bionanocomposites also represent an effective approach for designing newly sustainability-inspired flexible materials from the surface modification of nanocelluloses targeting specific interactions with protein structures. MenosIn this study, gelatin/carboxylated cellulose nanocrystal (cCNC) bionanocomposite films were developed as an eco-friendly alternative to non-biodegradable flexible plastic packaging. Cellulose nanocrystals were modified by 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidation (cCNC) to strategically interact with amino groups present in the gelatin macromolecular backbone. Gelatin/cCNC bionanocomposite films (0.5–6.0 wt% cCNC) obtained by solution casting were transparent to visible light while displayed high UV-blocking properties. The chemical compatibility between gelatin and cCNC was deepened by electrostatic COO− /NH3 + interactions, as detected by FTIR spectroscopy and morphologically indicated by scanning electron microscopy (SEM). Accordingly, Young’s modulus and tensile strength of films were largely increased by 80 and 64 %, respectively, specifically near the cCNC percolation threshold (4 wt%), whereas the water vapor permeability (WVP) was reduced by 52 % at the optimum 6.0 wt% cCNC content in relation to the non-reinforced gelatin matrix (0.10 vs. 0.18 g H2O mm m− 2 h− 1 kPa− 1 ). The oxygen transmission rates (OTR) of the gelatin/cCNC bionanocomposites were < 0.01 cm3 m-2 day− 1 , making them technically competitive to most promising biopolymers like polycaprolactone (PCL) and poly(lactic acid) (PLA). This study reveals how TEMPO-oxidized cellulose nanocrystals can broaden the performance of biodegradable gelatin films for use in packaging. The gelati... Mostrar Tudo |
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Palavras-Chave: |
Carboxylated cellulose nanocrystals. |
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Categoria do assunto: |
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Marc: |
LEADER 02547naa a2200229 a 4500
001 2171035
005 2024-12-30
008 2024 bl uuuu u00u1 u #d
022 $a0141-8130
024 7 $ahttps://doi.org/10.1016/j.ijbiomac.2024.135726$2DOI
100 1 $aLEITE, L. S. F.
245 $aInsights into the effect of carboxylated cellulose nanocrystals on mechanical and barrier properties of gelatin films for flexible packaging applications.$h[electronic resource]
260 $c2024
300 $a1 - 10
520 $aIn this study, gelatin/carboxylated cellulose nanocrystal (cCNC) bionanocomposite films were developed as an eco-friendly alternative to non-biodegradable flexible plastic packaging. Cellulose nanocrystals were modified by 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidation (cCNC) to strategically interact with amino groups present in the gelatin macromolecular backbone. Gelatin/cCNC bionanocomposite films (0.5–6.0 wt% cCNC) obtained by solution casting were transparent to visible light while displayed high UV-blocking properties. The chemical compatibility between gelatin and cCNC was deepened by electrostatic COO− /NH3 + interactions, as detected by FTIR spectroscopy and morphologically indicated by scanning electron microscopy (SEM). Accordingly, Young’s modulus and tensile strength of films were largely increased by 80 and 64 %, respectively, specifically near the cCNC percolation threshold (4 wt%), whereas the water vapor permeability (WVP) was reduced by 52 % at the optimum 6.0 wt% cCNC content in relation to the non-reinforced gelatin matrix (0.10 vs. 0.18 g H2O mm m− 2 h− 1 kPa− 1 ). The oxygen transmission rates (OTR) of the gelatin/cCNC bionanocomposites were < 0.01 cm3 m-2 day− 1 , making them technically competitive to most promising biopolymers like polycaprolactone (PCL) and poly(lactic acid) (PLA). This study reveals how TEMPO-oxidized cellulose nanocrystals can broaden the performance of biodegradable gelatin films for use in packaging. The gelatin/cCNC bionanocomposites also represent an effective approach for designing newly sustainability-inspired flexible materials from the surface modification of nanocelluloses targeting specific interactions with protein structures.
653 $aCarboxylated cellulose nanocrystals
700 1 $aLe GARS, M.
700 1 $aAZEREDO, H. M. C. de
700 1 $aMOREIRA, F. K. V.
700 1 $aMATTOSO, L. H. C.
700 1 $aBRAS, J.
773 $tInternational Journal of Biological Macromolecules$gv. 280, 135726, 2024.
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| 1. |  | GRAHAM, P. H.; ROSAS, J. C.; JENSEN, C. E. de; PERALTA, E.; TLUSTY, B.; ACOSTA-GALLEGOS, J.; PEREIRA, P. A. A. Addressing edaphic constraints to bean production: the Bean/Cowpea CRSP project in perspective. Field Crops Research, v. 82, n. 2-3, p.179-192, May 2003.| Tipo: Artigo em Periódico Indexado |
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