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| 8. |  | ESQUERDO, J. C. D. M.; SILVA, J. dos S. V. da; BASOTTI, I. S.; ALMEIDA, C. G. F. de. Análise da adequação à legislação ambiental das APPs fluviais na bacia do rio Salobra, MS. In: SIMPÓSIO DE GEOTECNOLOGIAS NO PANTANAL, 3., 2010, Cáceres, MT. Anais... Campinas: Embrapa Informática Agropecuária; São José dos Campos: INPE, 2010. p. 683-690. Geopantanal 2010.| Biblioteca(s): Embrapa Agricultura Digital. |
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| 9. | | ZANETTE, R.; ALMEIDA, L. B. F.; ALMEIDA, C. G.; OLIVEIRA, C. R. de; BRANDÃO, H. M.; MUNK, M. Análise da citoxicidade in vitro das nanofibras de celulose de algodão. In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 9., 2017, São Carlos. Anais ... São Carlos: Embrapa Instrumentação, 2017. p.681-684. Editores: Caue Ribeiro de Oliveira, Elaine Cristina Paris, Luiz Henrique Capparelli Mattoso, Marcelo Porto Bemquerer, Maria Alice Martins, Odílio Benedito Garrido de Assis.| Biblioteca(s): Embrapa Instrumentação. |
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| 13. | | QUINTAO, C. C. R.; ALMEIDA, C. G. de; SOUZA, G. T.; LADEIRA, L. O.; BRANDAO, H. de M.; CAMARGO, L. S. de A.; MUNK, M. Complexação da proteína CAS9 e RNA-GUIA com nanotubos de carbono visando edição gênica em células e embriões de mamíferos. In: SIMPÓSIO NACIONAL DE NANOBIOTECNOLOGIA, 2., 2019, São Bernardo do Campo. Livro de resumos. Santo André: Universidade Federal do ABC, 2018.| Biblioteca(s): Embrapa Gado de Leite. |
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| 17. | | ZANETTE, R.; ALMEIDA, L. B. F.; SOUZA, N. L. G. D.; ALMEIDA, C. G.; OLIVEIRA, L. F. C.; OLIVEIRA, C. R. de; BRANDÃO, H. M.; MUNK, M. Preparação, caracterização e citocompatibilidade de filmes nanocompósitos de quitosana e nanofibras de celulose. In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 9., 2017, São Carlos. Anais ... São Carlos: Embrapa Instrumentação, 2017. p. 283-286. Editores: Caue Ribeiro de Oliveira, Elaine Cristina Paris, Luiz Henrique Capparelli Mattoso, Marcelo Porto Bemquerer, Maria Alice Martins, Odílio Benedito Garrido de Assis.| Biblioteca(s): Embrapa Instrumentação. |
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| 19. | | RANGEL, P. H. N.; FERREIRA, M. E.; SANTOS, G. R.; DIAS NETO, J. J.; ARAUJO, B. J. O. R. de; RAMOS, L. N.; SILVA, L. M. dos A.; MENDONÇA, J. A.; ALMEIDA, C. G. de; COSTA, W. M. Mapeamento genético e piramidização de genes de resistência no desenvolvimento de multilinhas e cultivares compostas de arroz irrigado com resistência estável à brusone (Pyricularia grisea): relatório técnico. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2009. 65 p. (Embrapa Arroz e Feijão. Documentos, 243).| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 20. | | ZANETTE, R. de S. S.; FAYER, L.; OLIVEIRA, E. R. de; ALMEIDA, C. G.; OLIVEIRA, C. R. de; OLIVEIRA, L. F. C. de; MARANDUBA, C. M. C.; ALVARENGA, E. C.; BRANDAO, H. de M.; MUNK, M. Cytocompatibility and osteogenic differentiation of stem cells from human exfoliated deciduous teeth with cotton cellulose nanofibers for tissue engineering and regenerative medicine. Journal of Biomaterials Science, Polymer Edition, v. 33, n. 5, p. 627-650, 2022. Publicado online em 24 nov. 2021.| Biblioteca(s): Embrapa Gado de Leite. |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
17/12/2018 |
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Data da última atualização: |
24/01/2023 |
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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: |
MILHOMENS, G. C.; ALMEIDA, C. G. de; ZANETTE, R. de S. S.; SOUZA, N. L. G. D. de; MUNK, M.; BRANDAO, H. de M.; OLIVEIRA, L. F. C. de. |
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Afiliação: |
Gabriela Costa Milhomens, Universidade Federal de Tocantins; Camila Guimarães de Almeida; Rafaella de Sousa Salomão Zanette, UFJF; Nelson Luis Gonçalves Dias de Souza, Universidade Federal de Tocantins; Michele Munk, UFJF; HUMBERTO DE MELLO BRANDAO, CNPGL; Luiz Fernando Cappa de Oliveira, UFJF. |
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Título: |
Biocompatibility and adsorption properties of hydrogels obtained by graft polymerization of acrylic acid on cellulose from rice hulls. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Iranian Polymer Journal, v. 27, n. 12, p. 1023-1032, 2018. |
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DOI: |
10.1007/s13726-018-0672-z |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract Hydrogels constitute a group of cross-linked polymeric materials with the capability of swelling and retaining large amounts of water without dissolving. In this work, the hydrogels were obtained by grafting the acrylic acid on cellulose from rice hulls and cross-linking it with glycerol, ethylene glycol, and polyethylene glycol (Mw =200 and 10,000 g mol−1). The samples were characterized using IR and Raman spectroscopy, the absence of the bands at 1636 and 1614 cm−1 (in IR) and at 1659 and 1637 cm−1 (in Raman), in the spectra of grafted cellulose and assigned to ν(C=C), indicated the polymerization process and the absence of the monomer residual. The cross-linking process was verified by the appearance of bands at 1090 cm−1 (IR) and 996 cm−1 (Raman), attributed to ν(C?O?C). Thermogravimetric analysis showed that the cross-linked sample with glycerol presented the lowest thermal stability. The molecular mass of CDClCC-g-AA was 55.56±5.21 kDa with an R2 of 0.9741 and the CDClCC average particle size of 694 nm. The topography and the average roughness of the samples were obtained by atomic force microscopy and the samples that were cross-linked with the polyethylene glycol presented greater roughness. The degree of swelling was lower in the sample cross-linked with ethylene glycol, which was related to its higher degree of cross-linking. Finally, the biocompatibility of the samples was studied by analyzing the toxic effect of the samples on human embryonic kidney cells, where results showed that samples cross-linked with ethylene glycol were non-toxic. MenosAbstract Hydrogels constitute a group of cross-linked polymeric materials with the capability of swelling and retaining large amounts of water without dissolving. In this work, the hydrogels were obtained by grafting the acrylic acid on cellulose from rice hulls and cross-linking it with glycerol, ethylene glycol, and polyethylene glycol (Mw =200 and 10,000 g mol−1). The samples were characterized using IR and Raman spectroscopy, the absence of the bands at 1636 and 1614 cm−1 (in IR) and at 1659 and 1637 cm−1 (in Raman), in the spectra of grafted cellulose and assigned to ν(C=C), indicated the polymerization process and the absence of the monomer residual. The cross-linking process was verified by the appearance of bands at 1090 cm−1 (IR) and 996 cm−1 (Raman), attributed to ν(C?O?C). Thermogravimetric analysis showed that the cross-linked sample with glycerol presented the lowest thermal stability. The molecular mass of CDClCC-g-AA was 55.56±5.21 kDa with an R2 of 0.9741 and the CDClCC average particle size of 694 nm. The topography and the average roughness of the samples were obtained by atomic force microscopy and the samples that were cross-linked with the polyethylene glycol presented greater roughness. The degree of swelling was lower in the sample cross-linked with ethylene glycol, which was related to its higher degree of cross-linking. Finally, the biocompatibility of the samples was studied by analyzing the toxic effect of th... Mostrar Tudo |
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Palavras-Chave: |
Graft polymerization; Hydrogel. |
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Thesaurus NAL: |
Acrylic acid; Biocompatibility; Cellulose; Spectroscopy. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02500naa a2200277 a 4500
001 2101832
005 2023-01-24
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1007/s13726-018-0672-z$2DOI
100 1 $aMILHOMENS, G. C.
245 $aBiocompatibility and adsorption properties of hydrogels obtained by graft polymerization of acrylic acid on cellulose from rice hulls.$h[electronic resource]
260 $c2018
520 $aAbstract Hydrogels constitute a group of cross-linked polymeric materials with the capability of swelling and retaining large amounts of water without dissolving. In this work, the hydrogels were obtained by grafting the acrylic acid on cellulose from rice hulls and cross-linking it with glycerol, ethylene glycol, and polyethylene glycol (Mw =200 and 10,000 g mol−1). The samples were characterized using IR and Raman spectroscopy, the absence of the bands at 1636 and 1614 cm−1 (in IR) and at 1659 and 1637 cm−1 (in Raman), in the spectra of grafted cellulose and assigned to ν(C=C), indicated the polymerization process and the absence of the monomer residual. The cross-linking process was verified by the appearance of bands at 1090 cm−1 (IR) and 996 cm−1 (Raman), attributed to ν(C?O?C). Thermogravimetric analysis showed that the cross-linked sample with glycerol presented the lowest thermal stability. The molecular mass of CDClCC-g-AA was 55.56±5.21 kDa with an R2 of 0.9741 and the CDClCC average particle size of 694 nm. The topography and the average roughness of the samples were obtained by atomic force microscopy and the samples that were cross-linked with the polyethylene glycol presented greater roughness. The degree of swelling was lower in the sample cross-linked with ethylene glycol, which was related to its higher degree of cross-linking. Finally, the biocompatibility of the samples was studied by analyzing the toxic effect of the samples on human embryonic kidney cells, where results showed that samples cross-linked with ethylene glycol were non-toxic.
650 $aAcrylic acid
650 $aBiocompatibility
650 $aCellulose
650 $aSpectroscopy
653 $aGraft polymerization
653 $aHydrogel
700 1 $aALMEIDA, C. G. de
700 1 $aZANETTE, R. de S. S.
700 1 $aSOUZA, N. L. G. D. de
700 1 $aMUNK, M.
700 1 $aBRANDAO, H. de M.
700 1 $aOLIVEIRA, L. F. C. de
773 $tIranian Polymer Journal$gv. 27, n. 12, p. 1023-1032, 2018.
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