Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride.
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/5068 https://doi.org/10.1016/j.carbpol.2014.08.017 |
Resumo: | Hydrogels were prepared from cellulose acetate with a degree substitution (DS) 2.5 dissolved indimethylformamide by esterification crosslinking with Ethylenediaminetetraacetic dianhydride (EDTAD)catalyzed by triethylamine. Subsequent conversion of the unreacted carboxyl groups to sodium carbox-ylates by the addition of aqueous NaHCO3was performed to enhance the water affinity of the gels. Theabsorbency of the products was strongly dependent on the amount of EDTAD that was esterified to cellu-lose acetate, and the highest absorbency was observed for the hydrogel composed of approximately 0.36molecules of EDTAD per repeat unit of cellulose acetate. The hydrogels were synthesized with differentdegrees of crosslinking and were analyzed by IR spectral (FTIR), near infrared (NIR), thermogravimetryanalysis (TG and DTG), and crosslink density evaluation by Flory-Rehner theory. The hydrogels have syn-thesized with molar ratios EDTAD/OH groups: [1/1], [1/2], and [0.1/1]. The capacity for water absorbencywas studied and compared with the water absorbency of the CA. |
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Senna, André MartinsNovack, Kátia MonteiroBotaro, Vagner Roberto2015-04-14T17:50:23Z2015-04-14T17:50:23Z2014SENNA, A. M.; NOVACK, K. M.; BOTARO, V. R. Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. Carbohydrate Polymers, p. 260-268, 2014. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0144861714007863>. Acesso em: 02 fev. 2015.0144-8617http://www.repositorio.ufop.br/handle/123456789/5068https://doi.org/10.1016/j.carbpol.2014.08.017Hydrogels were prepared from cellulose acetate with a degree substitution (DS) 2.5 dissolved indimethylformamide by esterification crosslinking with Ethylenediaminetetraacetic dianhydride (EDTAD)catalyzed by triethylamine. Subsequent conversion of the unreacted carboxyl groups to sodium carbox-ylates by the addition of aqueous NaHCO3was performed to enhance the water affinity of the gels. Theabsorbency of the products was strongly dependent on the amount of EDTAD that was esterified to cellu-lose acetate, and the highest absorbency was observed for the hydrogel composed of approximately 0.36molecules of EDTAD per repeat unit of cellulose acetate. The hydrogels were synthesized with differentdegrees of crosslinking and were analyzed by IR spectral (FTIR), near infrared (NIR), thermogravimetryanalysis (TG and DTG), and crosslink density evaluation by Flory-Rehner theory. The hydrogels have syn-thesized with molar ratios EDTAD/OH groups: [1/1], [1/2], and [0.1/1]. The capacity for water absorbencywas studied and compared with the water absorbency of the CA.HydrogelCellulose acetateEsterification crosslinkingaSynthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleO periódico Carbohydrate Polymers concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3581340520513.info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-82636http://www.repositorio.ufop.br/bitstream/123456789/5068/2/license.txtc2ffdd99e58acf69202dff00d361f23aMD52ORIGINALARTIGO_SynthesisCharacterizationHydrogeis.pdfARTIGO_SynthesisCharacterizationHydrogeis.pdfapplication/pdf1139668http://www.repositorio.ufop.br/bitstream/123456789/5068/1/ARTIGO_SynthesisCharacterizationHydrogeis.pdfe6e6dd804b870df3bd50b00203d3a50fMD51123456789/50682019-07-10 11:11:09.36oai:localhost: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Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-07-10T15:11:09Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. |
title |
Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. |
spellingShingle |
Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. Senna, André Martins Hydrogel Cellulose acetate Esterification crosslinkinga |
title_short |
Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. |
title_full |
Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. |
title_fullStr |
Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. |
title_full_unstemmed |
Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. |
title_sort |
Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. |
author |
Senna, André Martins |
author_facet |
Senna, André Martins Novack, Kátia Monteiro Botaro, Vagner Roberto |
author_role |
author |
author2 |
Novack, Kátia Monteiro Botaro, Vagner Roberto |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Senna, André Martins Novack, Kátia Monteiro Botaro, Vagner Roberto |
dc.subject.por.fl_str_mv |
Hydrogel Cellulose acetate Esterification crosslinkinga |
topic |
Hydrogel Cellulose acetate Esterification crosslinkinga |
description |
Hydrogels were prepared from cellulose acetate with a degree substitution (DS) 2.5 dissolved indimethylformamide by esterification crosslinking with Ethylenediaminetetraacetic dianhydride (EDTAD)catalyzed by triethylamine. Subsequent conversion of the unreacted carboxyl groups to sodium carbox-ylates by the addition of aqueous NaHCO3was performed to enhance the water affinity of the gels. Theabsorbency of the products was strongly dependent on the amount of EDTAD that was esterified to cellu-lose acetate, and the highest absorbency was observed for the hydrogel composed of approximately 0.36molecules of EDTAD per repeat unit of cellulose acetate. The hydrogels were synthesized with differentdegrees of crosslinking and were analyzed by IR spectral (FTIR), near infrared (NIR), thermogravimetryanalysis (TG and DTG), and crosslink density evaluation by Flory-Rehner theory. The hydrogels have syn-thesized with molar ratios EDTAD/OH groups: [1/1], [1/2], and [0.1/1]. The capacity for water absorbencywas studied and compared with the water absorbency of the CA. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014 |
dc.date.accessioned.fl_str_mv |
2015-04-14T17:50:23Z |
dc.date.available.fl_str_mv |
2015-04-14T17:50:23Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SENNA, A. M.; NOVACK, K. M.; BOTARO, V. R. Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. Carbohydrate Polymers, p. 260-268, 2014. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0144861714007863>. Acesso em: 02 fev. 2015. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/5068 |
dc.identifier.issn.none.fl_str_mv |
0144-8617 |
dc.identifier.doi.none.fl_str_mv |
https://doi.org/10.1016/j.carbpol.2014.08.017 |
identifier_str_mv |
SENNA, A. M.; NOVACK, K. M.; BOTARO, V. R. Synthesis and characterization of hydrogels from cellulose acetate byesterification crosslinking with EDTA dianhydride. Carbohydrate Polymers, p. 260-268, 2014. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0144861714007863>. Acesso em: 02 fev. 2015. 0144-8617 |
url |
http://www.repositorio.ufop.br/handle/123456789/5068 https://doi.org/10.1016/j.carbpol.2014.08.017 |
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eng |
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eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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reponame:Repositório Institucional da UFOP instname:Universidade Federal de Ouro Preto (UFOP) instacron:UFOP |
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