Self-Diffusion Anisotropy of Small Penetrants in Compressed Elastomers

  title={Self-Diffusion Anisotropy of Small Penetrants in Compressed Elastomers},
  author={Radu Fechete and Dan Eugen Demco and Bernhard Bl{\"u}mich},
The anisotropy of self-diffusion of toluene in uniaxially compressed natural rubber samples with different cross-link densities was detected using the pulsed-gradient stimulated spin-echo NMR method. The effective diffusion coefficients and the displacement probabilities of toluene were measured along and perpendicular to the direction of the compression force. The diffusion anisotropy increases with increasing compression and cross-link density. The anisotropy of diffusion can be used for NMR… CONTINUE READING