Materialforschung an porösen Festkörpern mittels Xenon-Diffusionsmessungen: eine 129Xe-PFG-NMR-Studie - Material research in porous solids via xenon diffusion measurements: a 129 Xe PFG NMR study

by Junker, Friedhelm

This thesis describes the measurement of xenon diffusion coefficients in porous media via Pulsed Field Gradient (PFG) NMR spectroscopy. The thesis includes the characterization of a phase seperated polymer blend (PP/EPDM) in comparison to the pure components, the characterization of a number of commercially available semi-crystalline polymers and the characterization of a new microporous solid catalyst (silconimidonitride) with three different pore sizes by the diffusional behaviour of xenon in these materials. In addition to that a new theory is described which correlates the chemical shift of 129Xe NMR adsorption resonances with the corresponding xenon diffusion coefficients.