Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization

Detalhes bibliográficos
Autor(a) principal: Ramos, Reinaldo Rodrigues
Data de Publicação: 2006
Outros Autores: Carvalho, Vera, Gama, F. M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/5497
Resumo: A novel hydrogel was obtained by reticulation of chitosan with dextrin enzymatically linked to vinyl acrylate (dextrin-VA), without cross-linking agents. The hydrogel had a solid-like behaviour with G′ (storage modulus) >> G″ (loss modulus). Glucose diffusion coefficients of 3.9 × 10−6 ± 1.3 × 10−6 cm2/s and 2.9 × 10−6 ± 0.5 × 10−6 cm2/s were obtained for different substitution degrees of the dextrin-VA (20% and 70% respectively). SEM observation revealed a porous structure, with pores ranging from 50 µm to 150 µm.
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spelling Novel hydrogel obtained by chitosan and dextrin-VA co-polymerizationChitosanDextrin-VADiffusion coefficientHydrogelRheologyScience & TechnologyA novel hydrogel was obtained by reticulation of chitosan with dextrin enzymatically linked to vinyl acrylate (dextrin-VA), without cross-linking agents. The hydrogel had a solid-like behaviour with G′ (storage modulus) >> G″ (loss modulus). Glucose diffusion coefficients of 3.9 × 10−6 ± 1.3 × 10−6 cm2/s and 2.9 × 10−6 ± 0.5 × 10−6 cm2/s were obtained for different substitution degrees of the dextrin-VA (20% and 70% respectively). SEM observation revealed a porous structure, with pores ranging from 50 µm to 150 µm.SpringerUniversidade do MinhoRamos, Reinaldo RodriguesCarvalho, VeraGama, F. M.2006-082006-08-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/5497eng"Biotechnology Letters. ISSN 0141-5492. 28:16 (Aug. 2006) 1279-1284.0141-549210.1007/s10529-006-9087-616802098info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:52:04Zoai:repositorium.sdum.uminho.pt:1822/5497Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:51:07.185993Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization
title Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization
spellingShingle Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization
Ramos, Reinaldo Rodrigues
Chitosan
Dextrin-VA
Diffusion coefficient
Hydrogel
Rheology
Science & Technology
title_short Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization
title_full Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization
title_fullStr Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization
title_full_unstemmed Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization
title_sort Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization
author Ramos, Reinaldo Rodrigues
author_facet Ramos, Reinaldo Rodrigues
Carvalho, Vera
Gama, F. M.
author_role author
author2 Carvalho, Vera
Gama, F. M.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Ramos, Reinaldo Rodrigues
Carvalho, Vera
Gama, F. M.
dc.subject.por.fl_str_mv Chitosan
Dextrin-VA
Diffusion coefficient
Hydrogel
Rheology
Science & Technology
topic Chitosan
Dextrin-VA
Diffusion coefficient
Hydrogel
Rheology
Science & Technology
description A novel hydrogel was obtained by reticulation of chitosan with dextrin enzymatically linked to vinyl acrylate (dextrin-VA), without cross-linking agents. The hydrogel had a solid-like behaviour with G′ (storage modulus) >> G″ (loss modulus). Glucose diffusion coefficients of 3.9 × 10−6 ± 1.3 × 10−6 cm2/s and 2.9 × 10−6 ± 0.5 × 10−6 cm2/s were obtained for different substitution degrees of the dextrin-VA (20% and 70% respectively). SEM observation revealed a porous structure, with pores ranging from 50 µm to 150 µm.
publishDate 2006
dc.date.none.fl_str_mv 2006-08
2006-08-01T00:00:00Z
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.uri.fl_str_mv http://hdl.handle.net/1822/5497
url http://hdl.handle.net/1822/5497
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Biotechnology Letters. ISSN 0141-5492. 28:16 (Aug. 2006) 1279-1284.
0141-5492
10.1007/s10529-006-9087-6
16802098
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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