TY - JOUR
T1 - Development and characterization of bilayer films of FucoPol and chitosan
AU - Ferreira, Ana Rita V.
AU - Torres, Cristiana Andreia Vieira
AU - Freitas, Filomena
AU - Sevrin, Chantal
AU - Grandfils, Christian
AU - Reis, Maria A. M.
AU - Alves, Vítor D.
AU - Coelhoso, Isabel M.
N1 - The authors acknowledge the financial support from Fundacao para a Ciencia e a Tecnologia, Portugal, with projects UID/Multi/04378/2013, UID/QUI/50006/2013 and PEst-OE/AGR/UI0245/2014; and Ana R. V. Ferreira, Cristiana A. V. Torres and Filomena Freitas acknowledge the fellowships SFRH/BD/79101/2011, SFRH/BPD/87774/2012 and SFRH/BPD/72280/2010.
PY - 2016/8/20
Y1 - 2016/8/20
N2 - Bilayer films of FucoPol and chitosan were prepared and characterized in terms of optical, morphologic, hygroscopic, mechanical and barrier properties, to evaluate their potential application in food packaging. Bilayer films have shown dense and homogeneous layers, and presented enhanced properties when comparing to monolayer FucoPol films. Though, a high swelling degree in contact with liquid water (263.3%) and a high water vapour permeability (0.75 × 10-11 mol/ms Pa), typical of polysaccharide films, was still observed. However, they presented a low permeability to O2 and CO2 (0.47 × 10-16 mol m/m2s Pa and 5.8 × 10-16 mol m/m2s Pa, respectively). Tensile tests revealed a flexible and resistant film with an elongation at break of 38% and an elastic modulus of 137 MPa. The studied properties, in particular the excellent barrier to gases, impart these bilayer films potential to be used in packaging of low moisture content products, as well as in multilayered hydrophobic/hydrophilic/hydrophobic barriers for food products with a broader range of water content.
AB - Bilayer films of FucoPol and chitosan were prepared and characterized in terms of optical, morphologic, hygroscopic, mechanical and barrier properties, to evaluate their potential application in food packaging. Bilayer films have shown dense and homogeneous layers, and presented enhanced properties when comparing to monolayer FucoPol films. Though, a high swelling degree in contact with liquid water (263.3%) and a high water vapour permeability (0.75 × 10-11 mol/ms Pa), typical of polysaccharide films, was still observed. However, they presented a low permeability to O2 and CO2 (0.47 × 10-16 mol m/m2s Pa and 5.8 × 10-16 mol m/m2s Pa, respectively). Tensile tests revealed a flexible and resistant film with an elongation at break of 38% and an elastic modulus of 137 MPa. The studied properties, in particular the excellent barrier to gases, impart these bilayer films potential to be used in packaging of low moisture content products, as well as in multilayered hydrophobic/hydrophilic/hydrophobic barriers for food products with a broader range of water content.
KW - Bilayer films
KW - Chitosan
KW - Food packaging
KW - FucoPol
KW - Gas barrier
KW - Polysaccharides
UR - http://www.scopus.com/inward/record.url?scp=84963831843&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2016.03.089
DO - 10.1016/j.carbpol.2016.03.089
M3 - Article
C2 - 27178903
AN - SCOPUS:84963831843
SN - 0144-8617
VL - 147
SP - 8
EP - 15
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
ER -