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Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
23/06/2021 |
Data da última atualização: |
16/08/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
LIMA, E. M. B.; MIDDEA, A.; MARCONCINI, J. M.; CORRÊA, A. C.; PEREIRA, J. F.; GUIMARÃES, A. V.; LIMA, J. F. de; ANJOS, M. R. dos; CASTRO, I. M. de; OLIVEIRA, R. N.; MOREIRA, C. R.; PAIVA, M. M. de; RANGEL, F. L. C.; NEUMANN, R. |
Afiliação: |
EDLA MARIA BEZERRA LIMA, CTAA; ANTONIETA MIDDEA, Centro de Tecnologia Mineral (CETEM); JOSE MANOEL MARCONCINI, CNPDIA; ANA CAROLINA CORRÊA, Universidade Federal de São Carlos (UFSCar); JÉSSICA FERNANDES PEREIRA; ALESSANDRA VIEIRA GUIMARÃES, UFRJ; JOSIMAR FIRMINO DE LIMA, Centro de Tecnologia Mineral (CETEM); MARIANNA RAMOS DOS ANJOS, CTAA; IZABELA MIRANDA DE CASTRO, CTAA; RENATA NUNES OLIVEIRA, Universidade Federal Rural do Rio de Janeiro (UFRRJ); CARLA RAMOS MOREIRA, Instituto Nacional de Tecnologia (INT); MAURÍCIO MAGALHÃES DE PAIVA, Instituto Nacional de Tecnologia (INT); FRANCISCO LUIZ CORREA RANGEL, Instituto Nacional de Tecnologia (INT); REINER NEUMANN, Centro de Tecnologia Mineral (CETEM). |
Título: |
Biodegradable PLA based nanocomposites for packaging aplications: The effects of organo-modified bentonite concentration. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Journal of Applied Polymer Science, v. 138, n. 36, 2021. |
Páginas: |
1-17 |
DOI: |
https://doi.org/10.1002/app.50907 |
Idioma: |
Inglês |
Conteúdo: |
The effects of concentration and surface modification of two Brazilian bentonite clays on nanocomposites' properties based on polylactic acid ? (PLA) were investigated. The samples were prepared by the extrusion/injection method to obtain biodegradable packaging plastics. The raw materials and their bionanocomposites were characterized by various techniques. Natural clay samples presented a size of around 2 ?m while the modified ones' size was 5?6 ?m, probably due to the presence of cetyltrimethylammonium bromide in the interlayer space. The particle size and the contact angle increased with the treatment and the clay's density decreased. The organoclays were homogeneously dispersed in PLA, which can be associated with the interactions between PLA chains' carbonyl groups and the organoclays. The bionanocomposites present modified clay particles axis aligned to the flow direction of the extruder/injector. Chocolate organoclay acts as a nucleating agent to PLA crystal growth, increasing the sample's crystallinity, while Bofe organoclay interferes with the amorphous chain's mobility and diminishes the sample's crystallization. The addition of both organoclays to PLA diminished the sample's elongation at break and strength, although the organoclays increased the sample's Young modulus, even though Bofe organoclay is more active in PLA amorphous phase and Chocolate organoclay on the crystalline one. |
Palavras-Chave: |
Biodegradable; Biomaterials. |
Thesagro: |
Tecnologia de Alimento. |
Thesaurus Nal: |
Biocompatibility; Biodegradable products; Food technology; Packaging. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02556naa a2200385 a 4500 001 2132512 005 2022-08-16 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1002/app.50907$2DOI 100 1 $aLIMA, E. M. B. 245 $aBiodegradable PLA based nanocomposites for packaging aplications$bThe effects of organo-modified bentonite concentration.$h[electronic resource] 260 $c2021 300 $a1-17 520 $aThe effects of concentration and surface modification of two Brazilian bentonite clays on nanocomposites' properties based on polylactic acid ? (PLA) were investigated. The samples were prepared by the extrusion/injection method to obtain biodegradable packaging plastics. The raw materials and their bionanocomposites were characterized by various techniques. Natural clay samples presented a size of around 2 ?m while the modified ones' size was 5?6 ?m, probably due to the presence of cetyltrimethylammonium bromide in the interlayer space. The particle size and the contact angle increased with the treatment and the clay's density decreased. The organoclays were homogeneously dispersed in PLA, which can be associated with the interactions between PLA chains' carbonyl groups and the organoclays. The bionanocomposites present modified clay particles axis aligned to the flow direction of the extruder/injector. Chocolate organoclay acts as a nucleating agent to PLA crystal growth, increasing the sample's crystallinity, while Bofe organoclay interferes with the amorphous chain's mobility and diminishes the sample's crystallization. The addition of both organoclays to PLA diminished the sample's elongation at break and strength, although the organoclays increased the sample's Young modulus, even though Bofe organoclay is more active in PLA amorphous phase and Chocolate organoclay on the crystalline one. 650 $aBiocompatibility 650 $aBiodegradable products 650 $aFood technology 650 $aPackaging 650 $aTecnologia de Alimento 653 $aBiodegradable 653 $aBiomaterials 700 1 $aMIDDEA, A. 700 1 $aMARCONCINI, J. M. 700 1 $aCORRÊA, A. C. 700 1 $aPEREIRA, J. F. 700 1 $aGUIMARÃES, A. V. 700 1 $aLIMA, J. F. de 700 1 $aANJOS, M. R. dos 700 1 $aCASTRO, I. M. de 700 1 $aOLIVEIRA, R. N. 700 1 $aMOREIRA, C. R. 700 1 $aPAIVA, M. M. de 700 1 $aRANGEL, F. L. C. 700 1 $aNEUMANN, R. 773 $tJournal of Applied Polymer Science$gv. 138, n. 36, 2021.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
13/12/2012 |
Data da última atualização: |
16/03/2016 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
VIANA, T. F. C.; FELIX, G. A.; JULIANO, R. S.; PIOVEZAN, U. |
Afiliação: |
THIANNY FERNANDA CARRELO VIANA, UFMS; GISELE APARECIDA FELIX, UFG; RAQUEL SOARES JULIANO, CPAP; UBIRATAN PIOVEZAN, CPAP. |
Título: |
Morfologia tricológica na caracterização de raças bovinas locais brasileiras. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PANTANAL, E UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL, 6., 2012, Corumbá. Resumos... Corumbá: Embrapa Pantanal, 2012. 23 p. |
Páginas: |
p. 19 |
Série: |
(Embrapa Pantanal. Documentos, 121). |
Idioma: |
Português |
Palavras-Chave: |
Caracu; Curraleiro Pé-duro; Nelore; Pantaneiro; Pelos de bovinos. |
Thesagro: |
Mamífero; Raça. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/141297/1/Ainfo.pdf
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Marc: |
LEADER 00829nam a2200241 a 4500 001 1942603 005 2016-03-16 008 2012 bl uuuu u00u1 u #d 100 1 $aVIANA, T. F. C. 245 $aMorfologia tricológica na caracterização de raças bovinas locais brasileiras.$h[electronic resource] 260 $aIn: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PANTANAL, E UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL, 6., 2012, Corumbá. Resumos... Corumbá: Embrapa Pantanal, 2012. 23 p.$c2012 300 $ap. 19 490 $a(Embrapa Pantanal. Documentos, 121). 650 $aMamífero 650 $aRaça 653 $aCaracu 653 $aCurraleiro Pé-duro 653 $aNelore 653 $aPantaneiro 653 $aPelos de bovinos 700 1 $aFELIX, G. A. 700 1 $aJULIANO, R. S. 700 1 $aPIOVEZAN, U.
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