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Surface, mechanical and barrier properties of bio-based composite films based on chitosan and whey protein (CROSBI ID 225927)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Kurek, Mia ; Galuš, Sabina ; Debeaufort, Frederic Surface, mechanical and barrier properties of bio-based composite films based on chitosan and whey protein // Food packaging and shelf life, 1 (2014), 1; 56-67. doi: 10.1016/j.fpsl.2014.01.001

Podaci o odgovornosti

Kurek, Mia ; Galuš, Sabina ; Debeaufort, Frederic

engleski

Surface, mechanical and barrier properties of bio-based composite films based on chitosan and whey protein

Mono-component and composite bilayer and blend films composed of chitosan and whey protein were made. Colour, microstructure, water contact angles, swelling, water vapour sorption, barrier properties (oxygen, water vapour), water vapour diffusion coefficients and mechanical properties were determined. The influence of water vapour on barrier properties was studied in relation to the surface and structural properties. Mono-component and bilayer films were transparent with a homogeneous surface. Contrarily, blend films were translucent. Bilayer films had significantly lower water vapour permeability in comparison to mono-component and blend films. In all bilayer films, the air side (chitosan) was characterized by swelling, while the support side (whey protein) swelled after initial absorption. At low relative humidities, blend films were excellent barrier to oxygen and they completely lost their gas barrier performance in a humid environment. Bilayer films had enhanced mechanical resistance. The films with higher chitosan content showed higher capacity for elongation. Lamination and blending of chitosan and whey protein is a useful method to obtain new materials with desired functional properties.

Bilayer films ; Chitosan ; whey protein ; oxygen peremability ; surface properties ; microstructure

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Podaci o izdanju

1 (1)

2014.

56-67

objavljeno

2214-2894

10.1016/j.fpsl.2014.01.001

Povezanost rada

Prehrambena tehnologija

Poveznice
Indeksiranost