Print Email Facebook Twitter Modelling of migration from multi-layers and functional barriers: Estimation of parameters Title Modelling of migration from multi-layers and functional barriers: Estimation of parameters Author Dole, P. Voulzatis, Y. Vitrac, O. Reynier, A. Hankemeier, T. Aucejo, S. Feigenbaum, A. TNO Kwaliteit van Leven Publication year 2006 Abstract Functional barriers form parts of multi-layer packaging materials, which are deemed to protect the food from migration of a broad range of contaminants, e.g. those associated with reused packaging. Often, neither the presence nor the identity of the contaminants is known, so that safety assessment of the materials has to rely on predictive tools. Several complementary freeware described here allow one to model diffusion in multi-layer films. These tools require the input of parameters that are not easy to determine or predict. Previous work has focused on the prediction of diffusion coefficients at storage temperatures of packaging in contact with food. However, many other kinetic and thermodynamic parameters are needed to describe transport properties during the processing of a material at high temperature and during its shelf-life. All parameters needed for the calculations are discussed. In order to propose default values, the approach consists of (1) reviewing the available literature data, (2) running experiments on polypropylene, polyethylene and poly(ethylene vinyl alcohol) in typical conditions (separately diffusion during processing and migration) and (3) simulating numerical sets for typical situations. Several freeware are proposed to simulate migration from multi-layers and functional barriers using the default parameters. Subject BiologyAnalytical researchFood packagingFunctional barrierMigrationModellingRecyclingSafety assessmentethylene vinyl acetate copolymerpolyethylenepolypropylenearticlecomputer programcontrolled studydiffusionfood contaminationfood packagingfood processingmathematical modelpriority journalsimulationComputer SimulationConservation of Natural ResourcesDiffusionFood ContaminationFood PackagingModels, ChemicalSafety ManagementSoftwareTemperature To reference this document use: http://resolver.tudelft.nl/uuid:c7fec3dc-e05f-4e14-9d7a-44d97d3f9966 DOI https://doi.org/10.1080/02652030600658003 TNO identifier 239503 ISSN 0265-203X Source Food Additives and Contaminants, 23 (10), 1038-1052 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.