Morphological and physical properties of nano-biocomposite films based on collagen loaded with laponite®. (March 2019)

• Record Type: Journal Article
• Authors: Valencia, Germán Ayala; Luciano, Carla Giovana; Lourenço, Rodrigo Vinicius; Bittante, Ana Mônica Quinta Barbosa; do Amaral Sobral, Paulo José
• Is Part Of: Food packaging and shelf life. Volume 19(2019)
• Page Start: 24
• Page End: 30
• Publication Date: 2019-03
• Subjects: Edible film -- Biopolymer -- Nano-biocomposite -- Nanoparticle -- Surface roughness -- Thermal properties; Food -- Packaging -- Periodicals; Food -- Preservation -- Periodicals; Food -- Packaging; Periodicals; 664.0905
• DOI: 10.1016/j.fpsl.2018.11.013
• Languages: English
• ISSNs: 2214-2894

Abstract

Highlights: Films surface characteristics were modified with laponite platelets. Laponite platelets were exfoliated into collagen chains. Laponite reduced the helix-coil formation of collagen chains. Laponite not affected optical properties of collagen films. Abstract: The objective of the present study was to analyze the effects of laponite concentrations (CLap ) 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 CLap 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.