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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
12/05/2020 |
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Data da última atualização: |
27/05/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATTOS, B. D.; TARDY, B. L.; GRECA, L. G.; KÄMÄRÄINEN, T.; XIANG, W.; CUSOLA, O.; MAGALHAES, W. L. E.; ROJAS, O. J. |
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Afiliação: |
SCHOOL OF CHEMICAL ENGINEERING, AALTO UNIVERSITY; SCHOOL OF CHEMICAL ENGINEERING, AALTO UNIVERSITY; SCHOOL OF CHEMICAL ENGINEERING, AALTO UNIVERSITY; SCHOOL OF CHEMICAL ENGINEERING, AALTO UNIVERSITY; SCHOOL OF CHEMICAL ENGINEERING, AALTO UNIVERSITY; UNIVERSITAT POLITÈCNICA DE CATALUNYA, ESCOLA SUPERIOR D’ENGINYERIES INDUSTRIAL, AEROESPACIAL I AUDIOVISUAL DE TERRASSA; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; SCHOOL OF CHEMICAL ENGINEERING, AALTO UNIVERSITY. |
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Título: |
Nanofibrillar networks enable universal assembly of superstructured particle constructs. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Science Advances, v. 6, n. 19, eaaz7328, May 2020. |
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ISBN: |
2375-2548 |
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DOI: |
https://doi.org/10.1126/sciadv.aaz7328 |
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Idioma: |
Inglês |
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Conteúdo: |
Superstructured colloidal materials exploit the synergies between components to develop new or enhanced functions. Cohesion is a primary requirement for scaling up these assemblies into bulk materials, and it has only been fulfilled in case-specific bases. Here, we demonstrate that the topology of nanonetworks formed from cellulose nanofibrils (CNFs) enables robust superstructuring with virtually any particle. An intermixed network of fibrils with particles increases the toughness of the assemblies by up to three orders of magnitude compared, for instance, to sintering. Supramolecular cohesion is transferred from the fibrils to the constructs following a power law, with a constant decay factor for particle sizes from 230 nm to 40 ?m. Our findings are applicable to other nanofiber dimensions via a rationalization of the morphological aspects of both particles and nanofibers. CNFbased cohesion will move developments of functional colloids from laboratory-scale toward their implementation in large-scale nanomanufacturing of bulk materials. |
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Palavras-Chave: |
Nanocellulose; Nanofibrilla. |
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Thesagro: |
Celulose. |
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Thesaurus Nal: |
Cellulose. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
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001 2122280
005 2020-05-27
008 2020 bl uuuu u00u1 u #d
022 $a2375-2548
024 7 $ahttps://doi.org/10.1126/sciadv.aaz7328$2DOI
100 1 $aMATTOS, B. D.
245 $aNanofibrillar networks enable universal assembly of superstructured particle constructs.$h[electronic resource]
260 $c2020
520 $aSuperstructured colloidal materials exploit the synergies between components to develop new or enhanced functions. Cohesion is a primary requirement for scaling up these assemblies into bulk materials, and it has only been fulfilled in case-specific bases. Here, we demonstrate that the topology of nanonetworks formed from cellulose nanofibrils (CNFs) enables robust superstructuring with virtually any particle. An intermixed network of fibrils with particles increases the toughness of the assemblies by up to three orders of magnitude compared, for instance, to sintering. Supramolecular cohesion is transferred from the fibrils to the constructs following a power law, with a constant decay factor for particle sizes from 230 nm to 40 ?m. Our findings are applicable to other nanofiber dimensions via a rationalization of the morphological aspects of both particles and nanofibers. CNFbased cohesion will move developments of functional colloids from laboratory-scale toward their implementation in large-scale nanomanufacturing of bulk materials.
650 $aCellulose
650 $aCelulose
653 $aNanocellulose
653 $aNanofibrilla
700 1 $aTARDY, B. L.
700 1 $aGRECA, L. G.
700 1 $aKÄMÄRÄINEN, T.
700 1 $aXIANG, W.
700 1 $aCUSOLA, O.
700 1 $aMAGALHAES, W. L. E.
700 1 $aROJAS, O. J.
773 $tScience Advances$gv. 6, n. 19, eaaz7328, May 2020.
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| 1. |  | ARZABE, C.; SKUK, G.; SANTANA, G. G.; DELFIM, F. R.; LIMA, Y. C. C. de; ABRANTES, S. H. F. Herpetofauna da área de Curimataú, Paraíba. In: ARAÚJO, F. S. de; RODAL, M. J. N.; BARBOSA, M. R. de V. (Org.). Análise das variações da biodiversidade do bioma caatinga: suporte a estratégias regionais de conservação. Brasília, DF: Ministério do Meio Ambiente, Secretaria de Biodiversidade e Florestas, 2005. p.259-273. (Biodiversidade, 12).| Tipo: Capítulo em Livro Técnico-Científico |
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