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Registros recuperados : 299 | |
121. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | MARTINS, M. A. F.; DEL BIANCHI, V. L.; MmORAES, I. O. Potencial energetico dos residuos do processamento de farinha de mandioca Sao Pedro, SP: Centro de Raizes Tropicais/UNESP/SBM, 1996. 1p. In: CONGRESSO LATINO AMERICANO DE RAIZES TROPICAIS, 1, E CONGRESSO BRASILEIRO DE MANDIOCA, 9, Sao Pedro, SP. Programa e Resumos... Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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122. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | LIMA, K. B.; RITER NETTO, A. F.; MARTINS, M. A.; FREITAS, M. S. M. Crescimento, acúmulo de nutrientes e fenóis totais de mudas de cedro-australiano (Toona ciliata) inoculadas com fungos micorrízicos. Ciência Florestal, Santa Maria, v. 25, n. 4, p. 853-862, out./dez. 2015. Biblioteca(s): Embrapa Florestas. |
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123. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | TEIXEIRA, E. M.; MARTINS, M. A.; CORRÊA, A. C.; FERREIRA, M.; MATTOSO, L. H. C. Cotton fibers and cellulose cotton whiskers: thermal stability. In: INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS - ICAM, 11.; ENCONTRO SBPMat, 8., 2009, Rio de Janeiro. Abstracts... Rio de Janeiro: SBPMat, 2009. 1 CD-ROM. Biblioteca(s): Embrapa Instrumentação. |
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126. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | SILVA, V. M.; MANRINCH, A.; MATTOSO, L. H. C.; MARTINS, M. A. Utilização de resíduos da indústria de suco de maçã para a produção de filmes resistentes à umidade. In: SIMPÓSIO NACIONAL DE INSTRUMENTAÇÃO AGROPECUÁRIA, 4., 2019, São Carlos, SP. Ciência, inovação e mercado: anais. São Carlos, SP: Embrapa Instrumentação, 2019. Editores: Paulino Ribeiro Villas-Boas, Maria Alice Martins, Débora Marcondes Bastos Pereira Milori, Ladislau Martin Neto. SIAGRO 2019. 637-641 Biblioteca(s): Embrapa Instrumentação. |
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127. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | MARTINS, M. A. F.; DEL BIANCHI, V. L.; ORAES, I. O. Utilizacao de farelo de mandioca para producao de Bacillus thuringiensis, variedade kurstaki, atraves de fermentacao em meio solido. Sao Pedro, SP: Centro de Raizes Tropicais/UNESP/SBM, 1996. 1p. In: CONGRESSO LATINO AMERICANO DE RAIZES TROPICAIS, 1, CONGRESSO BRASILEIRO DE MANDIOCA, 9, 1996, Sao Pedro, SP. Programa e Resumos... Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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135. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | MARTINS, M. A.; FORATO, L. A.; JOB, A. E.; MORENO, R. M. B.; MATTOSO, L. H. C.; GONÇALVES, P. S. Avaliação da borracha natural de clones da série IAC por RMN 13C no estado sólido. In: CONGRESSO BRASILEIRO DE POLÍMEROS, 8., 2005, Águas de Lindóia. [Resumos...]. São Carlos: Associação Brasileira de Polímeros, 2005. p.105. Biblioteca(s): Embrapa Instrumentação. |
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136. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | SILVA, M. J.; MORENO, R. M. B.; GONÇALVES, P. de S.; MATTOSO, L. H. C.; MARTINS, M. A. Avaliação das propriedades tecnológicas da borracha natural de clones da série PB 300. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 4., 2012, São Carlos, SP. Anais... São Carlos: Embrapa Instrumentação: Embrapa Pecuária Sudeste, 2012. p. 88. Editores técnicos: João de Mendonça Naime, Lucimara Aparecida Forato, Maria Alice Martins, Ladislau Marcelino Rabello, Rubens Bernardes Filho. (Embrapa Instrumentação. Documentos, 56). Biblioteca(s): Embrapa Instrumentação. |
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137. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | SILVA, L. O. G.; SAVAREZ, T.; SILVA, M. J.; SCALOPPI JR, E. J.; GONÇALVES, P. S.; MARTINS, M. A. Avaliação das propriedades tecnológicas da borracha natural de novos clones de seringueira PC 96, PC 141 e IRCA 111. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 11., 2019, São Carlos, SP. Anais... São Carlos: Embrapa Pecuária Sudeste: Embrapa Instrumentação, 2019. Editores técnicos: Alexandre Berndt, Ana Rita de Araujo Nogueira, Lea Chapaval, Marcelo Mattos Cavallari, Manuel Antonio Chagas Jacinto. 65 Embrapa Pecuária Sudeste. Documentos, 134. Biblioteca(s): Embrapa Instrumentação. |
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138. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | ROMANATTO, J.; MARCONCINI, J. M.; LUCAS, A. de A.; BARBOSA, A. P.; MATTOSO, L. H. C.; MARTINS, M. A. Avaliação química da composição da fibra de surucucumirá. In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 8, 2014, Juiz de fora. Anais... São Carlos: Embrapa Instrumentação; Campo Grande: Embrapa Gado de Corte; Juiz de Fora: Embrapa Gado de Leite, 2014. p. 296-298. Editores: Maria Alice Martins, Humberto de Mello Brandão, Marlene de Barros Coelho, Daniel Souza Corrêa, Caue Ribeiro, Luiz Henrique Capparelli Mattoso. Biblioteca(s): Embrapa Instrumentação. |
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140. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | SILVA, M. J.; SCALOPPI JUNIOR, E. J.; GONÇALVES, P. de S.; MATTOSO, L. H. C.; MARTINS, M. A. Propriedades tecnológicas dos novos clones PC 119, PM 10, e PB 291. In: CONGRESSO BRASILEIRO DE HEVEICULTURA, 4., 2015, São José do Rio Preto. [Anais...] São José do rio Preto: CEDAGRO, 2015. 4 p. Biblioteca(s): Embrapa Instrumentação. |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
20/09/2021 |
Data da última atualização: |
10/06/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
FONSECA, C. S.; SCATOLINO, M. V.; SILVA, L. E.; MARTINS, M. A.; GUIMARÃES JUNIOR, M.; TONOLI, G. H. D. |
Afiliação: |
MARIA ALICE MARTINS, CNPDIA. |
Título: |
Valorization of jute biomass: Performance of fiber-cement composites extruded with hybrid reinforcement (fibers and nanofbrils). |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Waste and Biomass Valorization, v. 12, 2021). |
Páginas: |
5743?5761 |
DOI: |
https://doi.org/10.1007/s12649-021-01394-1 |
Idioma: |
Inglês |
Conteúdo: |
In this study, the characteristics of jute fbers and cellulose nanofbrils (CNFs) and their impacts on mechanical strength were compared, particularly from the standpoint of their application as reinforcement in extruded fber–cement composites. Raw jute fbers were subjected to an alkaline treatment before being fbrillated into CNFs. The fber–cement composites were produced with jute fbers (0.5% and 2%) and CNFs (0.5% and 2%) via extrusion process. Both percentages of reinforcement were based on the cement mass. In addition, hybrid composites with a mixture of fbers and CNFs were produced. Hydroxypropyl methylcellulose and carboxylic polyether were used as additives to improve the mixture’s rheology. The composites were subjected to natural weathering for 5 months before being analyzed for their physical and mechanical properties. CNFs and jute fbers subjected to NaOH treatment presented a higher initial degradation temperature (Tonset). The apparent porosity decreased for all compositions studied, reaching a 75% reduction for the sample reinforced with 2% CNFs. Fiber–cement with a hybrid reinforcement of 1.5% CNFs+0.5% fbers exhibited the strongest mechanical performance. All compositions showed a decrease in the modulus of elasticity after natural weathering. In contrast, the modulus of rupture and the limit of proportionality showed an average gain of 1 MPa for fber–cement composites produced with hybrid reinforcements. The better mechanical performance of the hybrid formulations may be owing to the synergistic work of the fbers and CNFs, suggesting the potential of cellulose CNFs for use as reinforcement in cement-based composites. MenosIn this study, the characteristics of jute fbers and cellulose nanofbrils (CNFs) and their impacts on mechanical strength were compared, particularly from the standpoint of their application as reinforcement in extruded fber–cement composites. Raw jute fbers were subjected to an alkaline treatment before being fbrillated into CNFs. The fber–cement composites were produced with jute fbers (0.5% and 2%) and CNFs (0.5% and 2%) via extrusion process. Both percentages of reinforcement were based on the cement mass. In addition, hybrid composites with a mixture of fbers and CNFs were produced. Hydroxypropyl methylcellulose and carboxylic polyether were used as additives to improve the mixture’s rheology. The composites were subjected to natural weathering for 5 months before being analyzed for their physical and mechanical properties. CNFs and jute fbers subjected to NaOH treatment presented a higher initial degradation temperature (Tonset). The apparent porosity decreased for all compositions studied, reaching a 75% reduction for the sample reinforced with 2% CNFs. Fiber–cement with a hybrid reinforcement of 1.5% CNFs+0.5% fbers exhibited the strongest mechanical performance. All compositions showed a decrease in the modulus of elasticity after natural weathering. In contrast, the modulus of rupture and the limit of proportionality showed an average gain of 1 MPa for fber–cement composites produced with hybrid reinforcements. The better mechanical performance of the hybrid formul... Mostrar Tudo |
Palavras-Chave: |
Cellulose fibers; CNF; Lignocellulose fiber; Mechanical fibrillation. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02476naa a2200253 a 4500 001 2134590 005 2022-06-10 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s12649-021-01394-1$2DOI 100 1 $aFONSECA, C. S. 245 $aValorization of jute biomass$bPerformance of fiber-cement composites extruded with hybrid reinforcement (fibers and nanofbrils).$h[electronic resource] 260 $c2021 300 $a5743?5761 520 $aIn this study, the characteristics of jute fbers and cellulose nanofbrils (CNFs) and their impacts on mechanical strength were compared, particularly from the standpoint of their application as reinforcement in extruded fber–cement composites. Raw jute fbers were subjected to an alkaline treatment before being fbrillated into CNFs. The fber–cement composites were produced with jute fbers (0.5% and 2%) and CNFs (0.5% and 2%) via extrusion process. Both percentages of reinforcement were based on the cement mass. In addition, hybrid composites with a mixture of fbers and CNFs were produced. Hydroxypropyl methylcellulose and carboxylic polyether were used as additives to improve the mixture’s rheology. The composites were subjected to natural weathering for 5 months before being analyzed for their physical and mechanical properties. CNFs and jute fbers subjected to NaOH treatment presented a higher initial degradation temperature (Tonset). The apparent porosity decreased for all compositions studied, reaching a 75% reduction for the sample reinforced with 2% CNFs. Fiber–cement with a hybrid reinforcement of 1.5% CNFs+0.5% fbers exhibited the strongest mechanical performance. All compositions showed a decrease in the modulus of elasticity after natural weathering. In contrast, the modulus of rupture and the limit of proportionality showed an average gain of 1 MPa for fber–cement composites produced with hybrid reinforcements. The better mechanical performance of the hybrid formulations may be owing to the synergistic work of the fbers and CNFs, suggesting the potential of cellulose CNFs for use as reinforcement in cement-based composites. 653 $aCellulose fibers 653 $aCNF 653 $aLignocellulose fiber 653 $aMechanical fibrillation 700 1 $aSCATOLINO, M. V. 700 1 $aSILVA, L. E. 700 1 $aMARTINS, M. A. 700 1 $aGUIMARÃES JUNIOR, M. 700 1 $aTONOLI, G. H. D. 773 $tWaste and Biomass Valorization$gv. 12, 2021).
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