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Preparation and Characterization of Novel Food Packaging Materials Based on Biodegradable PCL/Ag-Kaolinite Nanocomposites with Controlled Release Properties
Authors:Fayçal Benhacine  Abderrahmane Ouargli
Affiliation:Laboratoire des Matériaux Polymères, Département de chimie macromoléculaire, Faculté de Chimie, USTHB, El Alia, Alger, Algérie
Abstract:Food packaging materials based on biodegradable poly(ε-caprolactone)/Ag-Kaolinite nanocomposites with controlled release properties were successfully prepared via solvent casting method. X-Ray Diffraction, UV-visible Spectroscopy and Transmission Electron Microscopy results revealed the formation of mixed intercalated-exfoliated structures with a random dispersion of spherical Ag nanoparticles. PCL/Ag-KT films have showed a significant improvement in their barrier and antibacterial properties. The potential of the silver ion release from the PCL/Ag-Kt films to an aqueous medium was measured by Atomic Absorption Spectroscopy. The results exhibited a gradual increase of the amount of silver ions released. The release’s mechanism was mainly governed by the diffusion process.
Keywords:Active packaging  antimicrobial activity  biodegradable films  poly (ε-caprolactone)  silver-kaolinite  silver release
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