Simultaneous and time resolved investigation of diffusion processes of individual model fuel components in acrylonitrile-butadiene-rubber in the light of swelling phenomena

By immersing elastomers in binary mixtures containing different model fuel constituents, a relation between concentrations in the bulk fluid, individual swelling potentials of the mixtures' components and the attained equilibrium concentrations in the elastomer could be determined. In general, swelling potentials of mixtures are governed by the constituent with the highest individual swelling potential. Results from experiments involving model substances were interpreted in terms of the influence of a real fuels' composition on its swelling behavior towards elastomers contributing to a better understanding of diffusion processes.