Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/18844
Título: The Effect of Polymer/ Plasticiser Ratio in Film Forming Solutions on the Properties of Chitosan Films
Autor: Fundo, Joana
Galvis-Sanchez, Andrea
Delgadillo, Ivonne
Silva, Cristina L. M.
Quintas, Mafalda A. C.
Palavras-chave: Chitosan - glycerol edible films
Filmforming solutions
Thermo-mechanical properties
Water content
Water activity
Data: 2015
Citação: FUNDO, Joana F.; GALVIS-SANCHEZ, Andrea; DELGADILLO, Ivonne; SILVA, Cristina L.M.; QUINTAS, Mafalda - The Effect of Polymer/ Plasticiser Ratio in Film Forming Solutions on the Properties of Chitosan Films. Food Biophysics. ISSN 1557-1866. (2015) Vol.10, p.324-333
Resumo: In this work physical-chemical properties of chitosan/ glycerol film forming solutions (FFS) and the resulting films were analysed. Solutions were prepared using different concentrations of plasticising agent (glycerol)and chitosan. Films were produced by solvent casting and equilibrated in a controlled atmosphere. FFS water activity and rheological behaviour were determined. Films water content, solubility, water vapour and oxygen permeabilities, thickness, and mechanical and thermal properties were determined. Fourier transform infrared (FTIR) spectroscopy was also used to study the chitosan/glycerol interactions. Results demonstrate that FFS chitosan concentration influenced solutions consistency coefficient and this was related with differences in films water retention and structure. Plasticiser addition led to an increase in films moisture content, solubility and water vapour permeability, water affinity and structural changes. Films thermomechanical properties are significantly affected by both chitosan and glycerol addition. FTIR experiments confirm these results. This work highlights the importance of glycerol and water plasticisation in films properties.
Peer review: yes
URI: http://hdl.handle.net/10400.14/18844
DOI: DOI 10.1007/s11483-015-9394-3
Versão do Editor: http://link.springer.com/article/10.1007%2Fs11483-015-9394-3#/page-1
Aparece nas colecções:CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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