- January 13, 2023
- Posted by: M. Sadegh Riasi
- Category: Research News
“Dynamic NMR Relaxometry” as a Simple Tool for Measuring Liquid Transfers and Characterizing Surface and Structure Evolution in Porous Media
Benjamin Maillet, Rahima Sidi-Boulenouar, Philippe Coussot
We review the possibilities of a simple though powerful technique which provides various direct, quantitative information on the liquid distribution inside the porous structure and its variations over time due to fluid transports and/or phase changes. It relies on the analysis of the details of the NMR (nuclear magnetic resonance) relaxation of the proton spins of the liquid molecules and its evolution during some process such as imbibition, drying, phase change, etc, of the sample. This rather cheap technique then allows to distinguish how the liquid distributes in the different pore sizes or pore types, and how this evolves over time; since the relaxation time depends on the fraction of time spent by the molecule along the solid surface this technique can also be used to determine the specific surface of some pore classes in the material.
Langmuir 2022, 38, 15009–15025
Corresponding Author: Philippe Coussot
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