NMR measurement of the transport dynamics of colloidal particles in an open cell polymer foam porous media

摘要

The transport of model hard sphere core shell colloidal particles under flow through a random open-cell solid polymer foam is studied using nuclear magnetic resonance. Unique data on the scale dependent dynamics of the colloidal particle and suspending fluid phase are obtained using spectral chemical resolution. The dynamics of each phase are shown to differ from one another dependent on the displacement length and time scale of the measurement. The data is interpreted in the context of classic hydrodynamic dispersion theory and mechanisms of transport for each phase.