Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/49613

TitlePhysical and thermal properties of a chitosan/algine nanolayered PET film
Author(s)Carneiro-da-Cunha, Maria G.
Cerqueira, Miguel Ângelo Parente Ribeiro
Souza, Bartolomeu W. S.
Carvalho, S.
Quintas, Mafalda A. C.
Teixeira, J. A.
Vicente, A. A.
Issue date2010
PublisherElsevier
JournalCarbohydrate Polymers
Abstract(s)Nanolaminates 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.
TypeArticle
URIhttp://hdl.handle.net/1822/49613
ISSN0144-8617/
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDF - GRF - Artigos/Papers (with refereeing)

Files in This Item:
File Description SizeFormat 
Physical and thermal properties of a chitosan.alginate nanolayered PET film.pdf
  Restricted access
466,65 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID