Interactions between K-carrageenan and chitosan in nanolayered coatings - Structural and transport properties
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , , |
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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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 |
format |
article |
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 instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133107688833024 |