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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
30/11/2022 |
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Data da última atualização: |
22/01/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, M. J.; BONDANCIA, T. J.; AGUIAR, J. de; GONÇALVES, E. C. P.; FARINAS, C. S.; MARTINS, M. A.; MATTOSO, L. H. C. |
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Afiliação: |
CRISTIANE SANCHEZ FARINAS, CNPDIA; MARIA ALICE MARTINS, CNPDIA; LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA. |
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Título: |
Cellulose nanomaterials from rubberwood obtained via enzymatic hydrolysis route. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 45., 2022, Maceió. Química para o Desenvolvimento Sustentável e Soberano. Livro de resumos. Maceió, AL: Aptor Software, 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
Novel strategy for the production of advanced materials from the waste generated in natural rubber exploration can improve the whole production chain(PARASHAR and CHAWLA, 2021). Lignocellulosic biomass from rubberwood has the potential for several applications, being formed by cellulose, hemicellulose, lignin, and inorganic compounds in smaller amounts. In this context, this work shows the characterization of nanomaterials obtained via enzymatic hydrolysis from bleached fibers of rubber tree. The fibers were mercerized with 5% (w/w) aqueous sodium hydroxide solution for 2h at 80 °C. Afterwards, the fibers were bleached with a solution composed of equal parts (v/v) of acetate buffer (27% by weight NaOH and 7.5% (v/v) glacial acetic acid, in distilled water) and aqueous sodium chlorite (1.7% by weight NaClO2 in water). Then, the fibers were bleached twice with a solution of equal parts (v/v) of 4% NaOH (w/w) and 24% H2O2 (v/v). The bleached fiber was submitted to enzymatic hydrolysis in sodium citrate buffer (0.1 M, pH 5), with a solids load of 15% (w/v) and an enzymatic load (Cellic Ctec 3 Novozymes®) of 10 mg / g of biomass in a shaker incubator at 50 °C. and 200 rpm for 48h. The characterizations were made by AFM measurements (Dimension V microscope - Veeco); X-ray diffraction (XRD) using a Shimadzu 6000 diffractometer with CuK ( = 1,54 Å), at room temperature and with 2 angle between 5 and 40° (1° min-1); thermogravimetric analysis (TGA) in an inert atmosphere, using TA Instruments equipment, model Q500 with a heating rate of 10 °C/min from room temperature to 600 °C. The X-ray diffractograms showed that the main peaks corresponding to the crystallographic planes of Type I cellulose. The Bragg angles (2) were: 16.0°, 22.4° and 34.6°, with the highest intensity in the crystallographic plane (002). The crystallinity index, calculated according to the method proposed by Segal (1959), was 57.8% for in natura fiber, 75.1% for bleached fiber and 80.8% after hydrolysis. Analyzing the thermograms, it was observed that the Tonset of the fiber in natura was 289 °C, that of the bleached fiber was 292 °C and after the hydrolysis it was 327 °C. There was a change in the maximum degradation peak, in the final temperature of the process and in the amount of residue after the treatment. The AFM images exhibited structures rod-like shapes, with mean length of 349.9±169.6 nm and the diameter of 4.0±1.7 nm, after 48h to enzymatic hydrolysis. Our results showed that the obtained nanomaterials can be effectively extracted from the studied lignocellulosic source using the enzymatic route. The nanostructures showed high crystallinity, excellent thermal stability and high aspect ratio. Thus, nanomaterials presented important characteristics for the use in several applications, including as reinforcement. MenosNovel strategy for the production of advanced materials from the waste generated in natural rubber exploration can improve the whole production chain(PARASHAR and CHAWLA, 2021). Lignocellulosic biomass from rubberwood has the potential for several applications, being formed by cellulose, hemicellulose, lignin, and inorganic compounds in smaller amounts. In this context, this work shows the characterization of nanomaterials obtained via enzymatic hydrolysis from bleached fibers of rubber tree. The fibers were mercerized with 5% (w/w) aqueous sodium hydroxide solution for 2h at 80 °C. Afterwards, the fibers were bleached with a solution composed of equal parts (v/v) of acetate buffer (27% by weight NaOH and 7.5% (v/v) glacial acetic acid, in distilled water) and aqueous sodium chlorite (1.7% by weight NaClO2 in water). Then, the fibers were bleached twice with a solution of equal parts (v/v) of 4% NaOH (w/w) and 24% H2O2 (v/v). The bleached fiber was submitted to enzymatic hydrolysis in sodium citrate buffer (0.1 M, pH 5), with a solids load of 15% (w/v) and an enzymatic load (Cellic Ctec 3 Novozymes®) of 10 mg / g of biomass in a shaker incubator at 50 °C. and 200 rpm for 48h. The characterizations were made by AFM measurements (Dimension V microscope - Veeco); X-ray diffraction (XRD) using a Shimadzu 6000 diffractometer with CuK ( = 1,54 Å), at room temperature and with 2 angle between 5 and 40° (1° min-1); thermogravimetric analysis (TGA) in an inert... Mostrar Tudo |
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Palavras-Chave: |
Physicochemical characterization; Rubberwood Biomass. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149014/1/P-Cellulose-nanomaterials-from-rubberwood-obtained-via-enzymatic-hydrolysis.pdf
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Marc: |
LEADER 03650nam a2200205 a 4500
001 2149014
005 2024-01-22
008 2022 bl uuuu u00u1 u #d
100 1 $aSILVA, M. J.
245 $aCellulose nanomaterials from rubberwood obtained via enzymatic hydrolysis route.$h[electronic resource]
260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 45., 2022, Maceió. Química para o Desenvolvimento Sustentável e Soberano. Livro de resumos. Maceió, AL: Aptor Software$c2022
520 $aNovel strategy for the production of advanced materials from the waste generated in natural rubber exploration can improve the whole production chain(PARASHAR and CHAWLA, 2021). Lignocellulosic biomass from rubberwood has the potential for several applications, being formed by cellulose, hemicellulose, lignin, and inorganic compounds in smaller amounts. In this context, this work shows the characterization of nanomaterials obtained via enzymatic hydrolysis from bleached fibers of rubber tree. The fibers were mercerized with 5% (w/w) aqueous sodium hydroxide solution for 2h at 80 °C. Afterwards, the fibers were bleached with a solution composed of equal parts (v/v) of acetate buffer (27% by weight NaOH and 7.5% (v/v) glacial acetic acid, in distilled water) and aqueous sodium chlorite (1.7% by weight NaClO2 in water). Then, the fibers were bleached twice with a solution of equal parts (v/v) of 4% NaOH (w/w) and 24% H2O2 (v/v). The bleached fiber was submitted to enzymatic hydrolysis in sodium citrate buffer (0.1 M, pH 5), with a solids load of 15% (w/v) and an enzymatic load (Cellic Ctec 3 Novozymes®) of 10 mg / g of biomass in a shaker incubator at 50 °C. and 200 rpm for 48h. The characterizations were made by AFM measurements (Dimension V microscope - Veeco); X-ray diffraction (XRD) using a Shimadzu 6000 diffractometer with CuK ( = 1,54 Å), at room temperature and with 2 angle between 5 and 40° (1° min-1); thermogravimetric analysis (TGA) in an inert atmosphere, using TA Instruments equipment, model Q500 with a heating rate of 10 °C/min from room temperature to 600 °C. The X-ray diffractograms showed that the main peaks corresponding to the crystallographic planes of Type I cellulose. The Bragg angles (2) were: 16.0°, 22.4° and 34.6°, with the highest intensity in the crystallographic plane (002). The crystallinity index, calculated according to the method proposed by Segal (1959), was 57.8% for in natura fiber, 75.1% for bleached fiber and 80.8% after hydrolysis. Analyzing the thermograms, it was observed that the Tonset of the fiber in natura was 289 °C, that of the bleached fiber was 292 °C and after the hydrolysis it was 327 °C. There was a change in the maximum degradation peak, in the final temperature of the process and in the amount of residue after the treatment. The AFM images exhibited structures rod-like shapes, with mean length of 349.9±169.6 nm and the diameter of 4.0±1.7 nm, after 48h to enzymatic hydrolysis. Our results showed that the obtained nanomaterials can be effectively extracted from the studied lignocellulosic source using the enzymatic route. The nanostructures showed high crystallinity, excellent thermal stability and high aspect ratio. Thus, nanomaterials presented important characteristics for the use in several applications, including as reinforcement.
653 $aPhysicochemical characterization
653 $aRubberwood Biomass
700 1 $aBONDANCIA, T. J.
700 1 $aAGUIAR, J. de
700 1 $aGONÇALVES, E. C. P.
700 1 $aFARINAS, C. S.
700 1 $aMARTINS, M. A.
700 1 $aMATTOSO, L. H. C.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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| Registros recuperados : 26 | |
| 1. |  | BACCARIN, G. S.; BONDANCIA, T. J.; FARINAS, C. S. Influência da xilanase e da b-glicosidase na hidrólise enzimática da celulose de eucalipto visando à obtenção de nanomateriais. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 12., 2020, São Carlos, SP. Anais... São Carlos: Embrapa Instrumentação: Embrapa Pecuária Sudeste, 2020. Editores técnicos: Cristiane Sanchez Farinas, Daniel Souza Corrêa, José Manoel Marconcini, Maria Fernanda Berlingieri Durigan, Paulo Sérgio de Paula Herrmann Junior. 45 Embrapa Instrumentação. Documentos, 71.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 3. | | TEODORO, K. B. R.; BONDANCIA, T. J.; MARCONCINI, J. M.; MATTOSO, L. H. C. Cellulose nanofibers extracted from different biomass In: INTERNATIONAL CONFERENCE ON FOOD AND AGRICULTURE APPLICATIONS OF NANOTECHNOLOGIES - NanoAgri, 2010, São Pedro, SP. [Anais…] São Pedro: Aptor Software, 2010. Editors: Caue Ribeiro, Odílio Benedito Garrido de Assis, Luiz Henrique Capparelli Mattoso, Sérgio Mascarenhas.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 4. | | BONDANCIA, T. J.; AGUIAR, J. de; MATTOSO, L. H. C.; MARCONCINI, J. M.; FARINAS, C. S. Produção de nanocelulose integrada a obtenção de etanol 2G a partir do bagaço de cana-de-açúcar. 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. 536 / 539| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 5. | | BONDANCIA, T. J.; MARCONCINI, J. M.; MATTOSO, L. H. C.; FARINAS, C. S. Produção de nanocelulose por via enzimática associada à obtenção de etanol 2G In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 8., 2016, São Carlos, SP. Anais... São Carlos: Embrapa Instrumentação: Embrapa Pecuária Sudeste, 2016. p.78. Editores técnicos: Wilson Tadeu Lopes da Silva, José Manoel Marconcini, Maria Alice Martins, Lucimara Aparecida Forato, Paulino Ribeiro Villas Boas. (Embrapa Instrumentação. Documentos, 61).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 15. | | SILVA, M. J.; BONDANCIA, T. J.; AGUIAR, J. de; GONÇALVES, E. C. P.; FARINAS, C. S.; MARTINS, M. A.; MATTOSO, L. H. C. Cellulose nanomaterials from rubberwood obtained via enzymatic hydrolysis route. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 45., 2022, Maceió. Química para o Desenvolvimento Sustentável e Soberano. Livro de resumos. Maceió, AL: Aptor Software, 2022.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 16. | | BONDANCIA, T. J.; CORRÊA, L. J.; CRUZ, A. J.; MATTOSO, L. H. C.; MARCONCINI, J. M.; BADINO JUNIOR, A. C.; FARINAS, C. S. Production of cellulose nanofibers by enzymatic hydrolysis in a stirred tank reactor. In: SIMPÓSIO NACIONAL DE BIOPROCESSOS, 21.; SIMPÓSIO DE HIDRÓLISE ENZIMÁTICA DE BIOMASSA, 12., 2017, Aracaju, SE. [Proceedings ...]. São Paulo: Associação Brasileira de Engenharia Química, 2017.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 18. | | TEIXEIRA, E. de M.; BONDANCIA, T. J.; TEODORO, K. B. R.; CORREA, A. C.; MARCONCINI, J. M.; MATTOSO, L. H. C. Sugarcane bagasse whiskers: extraction and characterizations. Industrial Crops and Products, [S. l.], v. 33, n. 1, p. 63-66, 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Instrumentação. |
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| 19. | | TEIXEIRA, E. de M.; CAMPOS, A. de; MARCONCINI, J. M.; BONDANCIA, T. J.; WOOD, D.; KLAMCZYNSKI, A.; MATTOSO, L. H. C.; GLENN, G. M. Starch/fiber/poly(lactic acid) foam and compressed foam composites. RSC Advances: an international journal to further the chemical sciences, [S. l.], v. 4, n. 13, p. 6616-6623, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Instrumentação. |
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| 20. | | OLIVEIRA, F. B.; TEIXEIRA, E. de M.; MOREIRA, F. K. V.; BONDANCIA, T. J.; MARCONCINI, J. M.; MATTOSO, L. H. C. Obtaining nanofibers from sugacarne bagasse to reinforce nanocomposites biodegradable matrice. In: INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS - ICAM, 11.; ENCONTRO SBPMat, 8., 2009, Rio de Janeiro. Abstracts... Rio de Janeiro: SBPMat, 2009. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| Registros recuperados : 26 | |
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