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Related Experiment Videos

Functional barriers: properties and evaluation.

A Feigenbaum1, P Dole, S Aucejo

  • 1INRA EMOA, Campus Moulin de la Housse, F-51687 Reims, France. alexandre.feigenbaum@reims.inra.fr

Food Additives and Contaminants
|October 18, 2005
PubMed
Summary
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Functional barriers in plastic packaging prevent chemical migration into food. This study evaluates their behavior under use and processing conditions, offering models for industry and risk assessors.

Area of Science:

  • Food Contact Material Safety
  • Polymer Science
  • Chemical Migration Analysis

Background:

  • Functional barriers in plastic packaging are crucial for preventing chemical migration into food.
  • Understanding migration behavior under both use and high-temperature processing conditions is essential for food safety.

Purpose of the Study:

  • To assess the migration behavior of chemicals from mono- and multilayer plastic packaging.
  • To evaluate the effectiveness of functional barriers under various temperature conditions.
  • To provide tools for optimizing materials and risk assessment.

Main Methods:

  • Determined reference diffusion coefficients for 14 polymers at 40-60°C.
  • Proposed conditions for accelerated migration testing based on worst-case activation energy.

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  • Utilized numerical models for migration simulation.

    • Main Results:

    • Diffusion in melted polymers is slower for glassy polymers compared to rubbery polymers.
    • Established migration behavior differences between mono- and multilayer materials.
    • Developed rules for material optimization and risk assessment based on migration models.

    Conclusions:

    • Functional barriers require evaluation under both use and processing conditions.
    • Accelerated migration testing and numerical models aid in material design and safety assessment.
    • The study provides practical insights for the food packaging industry and regulatory bodies.