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dc.contributor.authorCarneiro-da-Cunha, Maria G.por
dc.contributor.authorCerqueira, Miguel Ângelo Parente Ribeiropor
dc.contributor.authorSouza, Bartolomeu W. S.por
dc.contributor.authorCarvalho, S.por
dc.contributor.authorQuintas, Mafalda A. C.por
dc.contributor.authorTeixeira, J. A.por
dc.contributor.authorVicente, A. A.por
dc.description.abstractNanolaminates have been reported to have applications in different areas, such as the preparation of multilayer films, coating biomedical appliances or multilayer edible coatings with enhanced properties for applications in the food industry. This work aims at characterizing the surface properties, water vapor permeability, and thermal and mechanical properties of a nanolayered film. The film was produced using two polysaccharides with opposite charges, chitosan and sodium alginate deposited on to aminolyzed/charged PET. Contact angle measurements showed differences in the films with a successively higher number of layers. SEM images allowed the measurement of the thickness of the layers. The nanolayered film had a water vapor permeability of (0.85±0.04)×10−11 gm−1 s−1 Pa−1 and a hardness increase of 0.245±0.06 GPa. DSC and TG analyses of the nanolayered film showed increases of 39.2% in the melting energy when compared with the PET film used as support, and a decrease in the decomposition temperature from 386 to 331 ◦C.por
dc.description.sponsorshipFundação para a Ciência e Tecnologia (FCT)por
dc.titlePhysical and thermal properties of a chitosan/algine nanolayered PET filmpor
oaire.citationTitleCarbohydrate Polymerspor
sdum.journalCarbohydrate Polymerspor
Appears in Collections:CDF - GRF - Artigos/Papers (with refereeing)

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