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| Registros recuperados : 15 | |
| 6. |  | MATOS, M.; CLARO, F. C.; LIMA, T. A. M.; AVELINO, F.; HANSEL, F. A.; MACIEL, G. M.; LOMONACO, D.; MAGALHAES, W. L. E. Acetone: water fractionation of pyrolytic lignin improves its antioxidant and antibacterial activity. Journal of Analytical and Applied Pyrolysis, v. 156, 105175, 2021.| Biblioteca(s): Embrapa Florestas. |
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| 7. | | CLARO, F. C.; LIMA, G. G. de; LIMA, T. A. M. de; HANSEL, F. A.; MATOS, M.; AVELINO, F.; OLIVEIRA, D. R.; LOMONACO, D.; MAGALHAES, W. L. E. Characterisation of laccase-mediated lignin polymerisation: implications for molecular weight, thermal stability, and electrical properties. Biomass Conversion and Biorefinery, 2023. First online.| Biblioteca(s): Embrapa Florestas. |
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| 8. | | AVELINO, F.; MIRANDA, I. P.; MOREIRA, T. D.; BECKER, H.; ROMERO, F. B.; TANIGUCHI, C. A. K.; MAZZETTO, S. E.; SOUZA FILHO, M. de S. M. de. The influence of the structural features of lignin-based polyurethane coatings on ammonium sulfate release: kinetics and thermodynamics of the process. Journal of Coatings Technology and Research, v. 16, n. 2, p. 449-463, 2019.| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 9. | | NOGUEIRA, I. de M.; AVELINO, F.; OLIVEIRA, D. R. de; SOUZA, N. F.; ROSA, M. de F.; MAZZETTO, S. E.; LOMONACO, D. Organic solvent fractionation of acetosolv palm oil lignin: The role of its structure on the antioxidant activity. International Journal of Biological Macromolecules, v. 122, p. 1163-1172, 2019.| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 10. | | THÁ, E. L.; MATOS, M.; AVELINO, F.; LOMONACO, D.; RODRIGUES-SOUZA, I.; GAGOSIAN, V. S. C.; CESTARI, M. M.; MAGALHAES, W. L. E.; LEME, D. M. Safety aspects of kraft lignin fractions: discussions on the in chemico antioxidant activity and the induction of oxidative stress on a cell-based in vitro model. International Journal of Biological Macromolecules, v. 182, p. 977-986, Apr. 2021.| Biblioteca(s): Embrapa Florestas. |
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| 11. | | MONTEIRO, V. A. C.; SILVA, K. T. da; SILVA, L. R. R. da; MATTOS, A. L. A.; FREITAS, R. M. de; MAZZETTO, S. E.; LOMONACO, D.; AVELINO, F. Selective acid precipitation of Kraft lignin: a tool for tailored biobased additives for enhancing PVA films properties for packaging applications. Reactive & Functional Polymers, v. 166, 104980, 2021.| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 12. | | AVELINO, F.; ALMEIDA, S. L.; DUARTE, E. B.; SOUSA, J. R.; MAZZETTO, S. E.; SOUZA FILHO, M. de S. M. de. Thermal and mechanical properties of coconut shell lignin-based polyurethanes synthesized by solvent-free polymerization. Journal of Materials Science, v. 53, n. 2, p. 1470-1486, 2018.| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 13. | | NASCIMENTO, R. J. M.; BEZERRA, L. C. A.; ALMEIDA, J. S.; BARROS, M. DE O.; SILVA, L. R. R.; ROSA, M. de F.; MAZZETO, S. E.; LOMONACO, D.; PEREIRA, K. R. A.; AVELINO, F. Elucidating the adsorption mechanism of Rhodamine B on mesoporous coconut coir?based biosorbents through a non?linear modeling and recycling approach. Environmental Science and Pollution Research, jan. 2022.| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 14. | | NASCIMENTO, L. DE S.; VIEIRA, F. I. D. DA M.; HORÁCIO, V.; MARQUES, F. P.; ROSA, M. de F.; SOUZA, S. A.; FREITAS, R. M. DE; UCHOA, D. E. A.; MAZZETO, S. E.; LOMONACO, D.; AVELINO, F. Tailored organosolv banana peels lignins: improved thermal, antioxidant and antimicrobial performances by controlling process parameters. International Journal of Biological Macromolecules, v. 181, p. 214-252, 2021.| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 15. | | NASCIMENTO, L. DE S.; NASCIMENTO, R. J. M.; MATA, A. K. A. DA; FELIPE, V. T. A.; ARAÚJO, R. F.; BEZERRA, L. C. A.; ALMEIDA, J. S.; MATTOS, A. L. A.; UCHOA, D. E. A.; NOVAIS, L. M. R. DE; MONTES D’OCA, C. DA R.; AVELINO, F. Development of a phosphorous-based biorefinery process for producing lignocellulosic functional materials from coconut wastes. International Journal of Biological Macromolecules, 239, 124300, 2023.| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| Registros recuperados : 15 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
04/03/2021 |
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Data da última atualização: |
12/04/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ARTNER, M. A.; CADEMARTORI, P. H. G. de; AVELINO, F.; LEMONACO, D.; MAGALHAES, W. L. E. |
|
Afiliação: |
Mirela Angelita Artner, PIPE - UFPR; Pedro Henrique Gonzalez de Cademartori, UFPR; Francisco Avelino, Instituto Federal de Educação, Ciência e Tecnologia do Ceará; Diego Lomonaco, Universidade Federal do Ceará; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
A novel design for nanocellulose reinforced urea-formaldehyde resin: a breakthrough in amino resin synthesis and biocomposite manufacturing. |
|
Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Cellulose, v. 28, n. 6, p. 3435–3450, Apr. 2021. |
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DOI: |
https://doi.org/10.1007/s10570-021-03739-4 |
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Idioma: |
Inglês |
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Conteúdo: |
Urea?formaldehyde (UF) resins are often reinforced with natural fibers or nanostructures such as cellulose microfibrils (CMFs) to improve their mechanical and physical properties in wood panels. However, the high-water content in these suspensions is a limitation on applications in thermosetting resins. The innovative technology investigated here consists of the in-situ production of a methanediol-based suspension of CMFs through a mechanical process and its incorporation during resin synthesis. We sought to maintain the physicochemical properties and the basic chemical composition of the resin. The synergy between the resin and CMFs provided a shielding effect and a greater storage modulus (E?). We demonstrate that this approach is robust through standard viscoelastic, physical, and mechanical tests. Likewise, a methanediol-based CMF suspension used to synthesize UF resin was effective to reduce formaldehyde emission during the resin cure reactions. Finally, the bio-based composites manufactured with this UF resin containing CMF had better performance due to increased internal bond strength by up to 15%, reduced water absorption by up to 8%, and reduced formaldehyde emission by 30% at environmental temperature. |
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Palavras-Chave: |
Celulose microfibrilada; Microfibrillated cellulose; Nanocellulose; Nanocelulose; Urea formaldehyde resin; Ureia formaldeído; Wood panels. |
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Thesagro: |
Painel de Madeira; Resina. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
Marc: |
LEADER 02168naa a2200289 a 4500
001 2130463
005 2021-04-12
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10570-021-03739-4$2DOI
100 1 $aARTNER, M. A.
245 $aA novel design for nanocellulose reinforced urea-formaldehyde resin$ba breakthrough in amino resin synthesis and biocomposite manufacturing.$h[electronic resource]
260 $c2021
520 $aUrea?formaldehyde (UF) resins are often reinforced with natural fibers or nanostructures such as cellulose microfibrils (CMFs) to improve their mechanical and physical properties in wood panels. However, the high-water content in these suspensions is a limitation on applications in thermosetting resins. The innovative technology investigated here consists of the in-situ production of a methanediol-based suspension of CMFs through a mechanical process and its incorporation during resin synthesis. We sought to maintain the physicochemical properties and the basic chemical composition of the resin. The synergy between the resin and CMFs provided a shielding effect and a greater storage modulus (E?). We demonstrate that this approach is robust through standard viscoelastic, physical, and mechanical tests. Likewise, a methanediol-based CMF suspension used to synthesize UF resin was effective to reduce formaldehyde emission during the resin cure reactions. Finally, the bio-based composites manufactured with this UF resin containing CMF had better performance due to increased internal bond strength by up to 15%, reduced water absorption by up to 8%, and reduced formaldehyde emission by 30% at environmental temperature.
650 $aPainel de Madeira
650 $aResina
653 $aCelulose microfibrilada
653 $aMicrofibrillated cellulose
653 $aNanocellulose
653 $aNanocelulose
653 $aUrea formaldehyde resin
653 $aUreia formaldeído
653 $aWood panels
700 1 $aCADEMARTORI, P. H. G. de
700 1 $aAVELINO, F.
700 1 $aLEMONACO, D.
700 1 $aMAGALHAES, W. L. E.
773 $tCellulose$gv. 28, n. 6, p. 3435–3450, Apr. 2021.
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