Development of chitosan/montmorillonite nanocomposites with encapsulated α-tocopherol

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorDias, Marali Vilela-
Autor(es): dc.creatorAzevedo, Viviane Machado de-
Autor(es): dc.creatorBorges, Soraia Vilela-
Autor(es): dc.creatorSoares, Nilda de Fatima Ferreira-
Autor(es): dc.creatorFernandes, Regiane Victória de Barros-
Autor(es): dc.creatorMarques, João José Granate de Sá e Melo-
Autor(es): dc.creatorMedeiros, Eber Antonio Alves-
Data de aceite: dc.date.accessioned2026-02-09T12:30:09Z-
Data de disponibilização: dc.date.available2026-02-09T12:30:09Z-
Data de envio: dc.date.issued2016-03-18-
Data de envio: dc.date.issued2016-03-18-
Data de envio: dc.date.issued2014-06-01-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/10930-
Fonte completa do material: dc.identifierhttp://www.sciencedirect.com/science/article/pii/S030881461400836X-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1162571-
Descrição: dc.descriptionNanocomposites of chitosan (CS) were developed and characterized in a full factorial design with varying levels of montmorillonite (MMTNa) and encapsulated tocopherol (toc-encap). The structural properties (XRD, FTIR), morphology (TEM), hygroscopic properties (water vapour permeability, hydrophobicity, sorption isotherms) and optical properties (haze, CIELab parameters) of the resulting materials were evaluated. Toc-encap contents up to 10% influenced the intercalation of MMTNa in the CS matrix, resulting in films with reduced water vapour permeability (3.48 × 10–11 (g/m s Pa)), increased hydrophobicity (ΔGHydroph |7.93–59.54| mJ m−2) and lower equilibrium moisture content (EMC), thus showing potential for active food packaging materials. At levels above 10%, toc-encap agglomerates occurred, which deteriorated the properties of the resulting films, as shown with the TEM. As the toc-encap content increased, the films became slightly more yellow, more irregular and less transparent, with a higher haze index.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier; Applied Science Publishers-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceFood Chemistry-
Palavras-chave: dc.subjectMoisture resistance-
Palavras-chave: dc.subjectStructural properties-
Palavras-chave: dc.subjectMorphological properties-
Palavras-chave: dc.subjectPackaging-
Título: dc.titleDevelopment of chitosan/montmorillonite nanocomposites with encapsulated α-tocopherol-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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