Use este identificador para citar ou linkar para este item:
http://repositorio.ufla.br/jspui/handle/1/10930
Título: | Development of chitosan/montmorillonite nanocomposites with encapsulated α-tocopherol |
Palavras-chave: | Moisture resistance Structural properties Morphological properties Packaging |
Data do documento: | 1-Jun-2014 |
Editor: | Elsevier; Applied Science Publishers |
Citação: | DIAS, M. V. et al. Development of chitosan/montmorillonite nanocomposites with encapsulated α-tocopherol. Food Chemistry, London, v. 165, p. 323-329, 15 Dec. 2014. |
Resumo: | Nanocomposites 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. |
URI: | http://www.sciencedirect.com/science/article/pii/S030881461400836X http://repositorio.ufla.br/jspui/handle/1/10930 |
Aparece nas coleções: | DCA - Artigos publicados em periódicos |
Arquivos associados a este item:
Não existem arquivos associados a este item.
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.