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    Morphological and physical properties of nano-biocomposite films based on collagen loaded with laponite (R)

    Year: 2019

    Journal: FOOD PACKAGING SHELF LIFE, Volume 19, MAR, page 24–30

    Authors: Valencia, German Ayala; Luciano, Carla Giovana; Lourenco, Rodrigo Vinicius; Quinta Barbosa Bittante, Ana Monica; do Amaral Sobral, Paulo Jose

    Organizations: Sao Paulo Research Foundation (FAPESP) [2012/24047-3, 2013/07914-8]

    Keywords: Edible film; Biopolymer; Nano-biocomposite; Nanoparticle; Surface roughness; Thermal properties

    The objective of the present study was to analyze the effects of laponite concentrations (C-Lap) on surface morphology and physical properties of nano-biocomposite films based on collagen loaded with laponite. Films microstructure, thickness, moisture content (MC), gloss, color, opacity, crystallinity, chemical structure, thermal and mechanical properties (MP), water vapor permeability (WVP), and the water contact angle (WCA) were determined. A considerable impact of C-Lap on the surface roughness of the nano-biocomposite films was observed, without effect on its thickness, MC, gloss, color, opacity, MP, WVP, and WCA results. Laponite platelets were exfoliated into collagen chains, provoking a reduction in helix-coil formation, leading to a decrease in the enthalpy melting values of the nano-biocomposite films. This research reports for the first time information regarding films based on collagen loaded with laponite with potential use as food packaging.
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