Migration modelling

Migration modelling describes the transport of low-molecular substances from polymers (e.g. plastic packaging) into adjacent contact phases such as food or cosmetics. The model mathematically represents the dependence of migration on material properties, temperature, molecular mass and contact time, thus enabling a quantitative description of migration behaviour under defined boundary conditions.

The developed programme provides two approaches for calculating substance migration from polymers. A single-layer model is based on Piringer's analytical migration model and is used to calculate migration from single-layer polymers. In addition, a multi-layer model allows the numerical calculation of migration from composite polymers and thus the mapping of practical multi-layer systems. Furthermore, key influencing parameters can be varied and their effects on migration analysed.