%0 journal article
%@ 0376-7388
%A Fierro, D., Scharnagl, N., Emmler, T., Boschetti de Fierro, A., Abetz, V.

%D 2011
%J Journal of Membrane Science
%N 1-2
%P 63-71 
%R doi:10.1016/j.memsci.2011.09.006
%T Experimental determination of self-diffusivities through a polymer network for single components in a mixture
%U https://doi.org/10.1016/j.memsci.2011.09.006
1-2 
%X Diffusion models such as Vrentas & Duda diffusion theory and Wesselingh & Bollen multicomponent diffusion model have been used together with estimated tracer diffusion coefficients in order to provide a predictive method to calculate thermodynamic diffusion coefficients needed for transport simulation in polymer membrane processes. PFG-NMR measurements were carried out in order to estimate the tracer diffusion coefficients for solvent–solvent–polymer systems on free-standing crosslinked polymer films. The use of experimentally determined diffusivities for a set of finite solvent-solvent-polymer concentrations as well as of plausible assumptions in nanofiltration allows the estimation of the unclear parameters presented in the diffusion theories with the subsequent predictability for those systems.