Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties

Detalhes bibliográficos
Autor(a) principal: Pinheiro, A. C.
Data de Publicação: 2012
Outros Autores: Bourbon, A. I., Medeiros, Bartolomeu G. de S., Silva, Luis Henrique Mendes da, Silva, Maria do Carmo Hespanhol da, Carneiro-da-Cunha, Maria G., Coimbra, Manuel A., Vicente, A. A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/16785
Resumo: The interactions between -carrageenan and chitosan, two oppositely charged polysaccharides, have been investigated through microcalorimetric and quartz crystal microbalance measurements. Microcalorimetric measurements show that -carrageenan/chitosan interaction is an exothermic process and that the alternate deposition of -carrageenan and chitosan results in the formation of a nanolayered coating mainly due to the electrostatic interactions existing between the two polyelectrolytes (though other types of interactions may also be involved). Quartz crystal microbalance measurements confirmed that the alternating deposition of -carrageenan and chitosan resulted in the formation of a stable multilayer structure. The -carrageenan/chitosan nanolayered coating, assembled on a polyethylene terephthalate (PET) support, was characterized in terms of its surface (contact angle measurements) and gas barrier properties (water vapor and O2 permeabilities) and analyzed by scanning electron microscopy (SEM). The water vapor permeability (WVP) and the oxygen permeability (O2P) of the -carrageenan/chitosan nanolayers were found to be 0.020 ± 0.002 × 10−11 and 0.043 ± 0.027 × 10−14 g m−1 s−1 Pa−1, respectively. These results contribute to a better understanding of the type of interactions that play role during the construction of this type of nanostructures. This knowledge can be used in the establishment of an approach to produce edible, biodegradable multilayered nanostructures with improved mechanical and barrier properties for application in, e.g. food and biomedical industries.
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spelling Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport propertiesMultilayersEdible coatingPolyelectrolytesElectrostatic interactionsScience & TechnologyThe interactions between -carrageenan and chitosan, two oppositely charged polysaccharides, have been investigated through microcalorimetric and quartz crystal microbalance measurements. Microcalorimetric measurements show that -carrageenan/chitosan interaction is an exothermic process and that the alternate deposition of -carrageenan and chitosan results in the formation of a nanolayered coating mainly due to the electrostatic interactions existing between the two polyelectrolytes (though other types of interactions may also be involved). Quartz crystal microbalance measurements confirmed that the alternating deposition of -carrageenan and chitosan resulted in the formation of a stable multilayer structure. The -carrageenan/chitosan nanolayered coating, assembled on a polyethylene terephthalate (PET) support, was characterized in terms of its surface (contact angle measurements) and gas barrier properties (water vapor and O2 permeabilities) and analyzed by scanning electron microscopy (SEM). The water vapor permeability (WVP) and the oxygen permeability (O2P) of the -carrageenan/chitosan nanolayers were found to be 0.020 ± 0.002 × 10−11 and 0.043 ± 0.027 × 10−14 g m−1 s−1 Pa−1, respectively. These results contribute to a better understanding of the type of interactions that play role during the construction of this type of nanostructures. This knowledge can be used in the establishment of an approach to produce edible, biodegradable multilayered nanostructures with improved mechanical and barrier properties for application in, e.g. food and biomedical industries.The authors Ana C. Pinheiro and Ana I. Bourbon are recipient of fellowships from the Fundacao para a Ciencia e Tecnologia (FCT, Portugal) through grants SFRH/BD/48120/2008 and SFRH/BD/73178/2010, respectively. The Author Bartolomeu G. de S. Medeiros was recipient of a scholarship from de Project Isac (Isac Mundus Cooperation, European Union) and is also a recipient of a scholarship from Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior" (Capes, Brazil). The authors would like to acknowledge FINEP for the microcalorimeter and support by CAPES/PROCAD/1415/2007. The authors also acknowledge Dr. Edith Ariza from SEMAT/UM by the support in SEM analysis.ElsevierUniversidade do MinhoPinheiro, A. C.Bourbon, A. I.Medeiros, Bartolomeu G. de S.Silva, Luis Henrique Mendes daSilva, Maria do Carmo Hespanhol daCarneiro-da-Cunha, Maria G.Coimbra, Manuel A.Vicente, A. A.2012-012012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/16785eng0144-861710.1016/j.carbpol.2011.08.040info: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:RCAAP2023-07-21T12:52:36Zoai:repositorium.sdum.uminho.pt:1822/16785Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:51:45.761556Repositório 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 Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties
title Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties
spellingShingle Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties
Pinheiro, A. C.
Multilayers
Edible coating
Polyelectrolytes
Electrostatic interactions
Science & Technology
title_short Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties
title_full Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties
title_fullStr Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties
title_full_unstemmed Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties
title_sort Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties
author Pinheiro, A. C.
author_facet Pinheiro, A. C.
Bourbon, A. I.
Medeiros, Bartolomeu G. de S.
Silva, Luis Henrique Mendes da
Silva, Maria do Carmo Hespanhol da
Carneiro-da-Cunha, Maria G.
Coimbra, Manuel A.
Vicente, A. A.
author_role author
author2 Bourbon, A. I.
Medeiros, Bartolomeu G. de S.
Silva, Luis Henrique Mendes da
Silva, Maria do Carmo Hespanhol da
Carneiro-da-Cunha, Maria G.
Coimbra, Manuel A.
Vicente, A. A.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Pinheiro, A. C.
Bourbon, A. I.
Medeiros, Bartolomeu G. de S.
Silva, Luis Henrique Mendes da
Silva, Maria do Carmo Hespanhol da
Carneiro-da-Cunha, Maria G.
Coimbra, Manuel A.
Vicente, A. A.
dc.subject.por.fl_str_mv Multilayers
Edible coating
Polyelectrolytes
Electrostatic interactions
Science & Technology
topic Multilayers
Edible coating
Polyelectrolytes
Electrostatic interactions
Science & Technology
description The interactions between -carrageenan and chitosan, two oppositely charged polysaccharides, have been investigated through microcalorimetric and quartz crystal microbalance measurements. Microcalorimetric measurements show that -carrageenan/chitosan interaction is an exothermic process and that the alternate deposition of -carrageenan and chitosan results in the formation of a nanolayered coating mainly due to the electrostatic interactions existing between the two polyelectrolytes (though other types of interactions may also be involved). Quartz crystal microbalance measurements confirmed that the alternating deposition of -carrageenan and chitosan resulted in the formation of a stable multilayer structure. The -carrageenan/chitosan nanolayered coating, assembled on a polyethylene terephthalate (PET) support, was characterized in terms of its surface (contact angle measurements) and gas barrier properties (water vapor and O2 permeabilities) and analyzed by scanning electron microscopy (SEM). The water vapor permeability (WVP) and the oxygen permeability (O2P) of the -carrageenan/chitosan nanolayers were found to be 0.020 ± 0.002 × 10−11 and 0.043 ± 0.027 × 10−14 g m−1 s−1 Pa−1, respectively. These results contribute to a better understanding of the type of interactions that play role during the construction of this type of nanostructures. This knowledge can be used in the establishment of an approach to produce edible, biodegradable multilayered nanostructures with improved mechanical and barrier properties for application in, e.g. food and biomedical industries.
publishDate 2012
dc.date.none.fl_str_mv 2012-01
2012-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/16785
url http://hdl.handle.net/1822/16785
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0144-8617
10.1016/j.carbpol.2011.08.040
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
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