Measuring surface-area-to-volume ratios in soft porous materials using laser-polarized xenon interphase exchange nuclear magnetic resonance

We demonstrate a minimally invasive nuclear magnetic resonance (NMR) technique that enables determination of the surface-area-to-volume ratio (S/V) of soft porous materials from measurements of the diffusive exchange of laser-polarized 129Xe between gas in the pore space and 129Xe dissolved in the s...

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Bibliographic Details
Published in:	Journal of physics. Condensed matter Vol. 14; no. 13; p. L297
Main Authors:	Butler, J P, Mair, R W, Hoffmann, D, Hrovat, M I, Rogers, R A, Topulos, G P, Walsworth, R L, Patz, S
Format:	Journal Article
Language:	English
Published:	England 08-04-2002
Subjects:	Lasers Magnetic Resonance Spectroscopy Microscopy, Confocal Polymers - analysis Porosity Xenon Isotopes NASA Discipline Environmental Health Non-NASA Center
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Summary:	We demonstrate a minimally invasive nuclear magnetic resonance (NMR) technique that enables determination of the surface-area-to-volume ratio (S/V) of soft porous materials from measurements of the diffusive exchange of laser-polarized 129Xe between gas in the pore space and 129Xe dissolved in the solid phase. We apply this NMR technique to porous polymer samples and find approximate agreement with destructive stereological measurements of S/V obtained with optical confocal microscopy. Potential applications of laser-polarized xenon interphase exchange NMR include measurements of in vivo lung function in humans and characterization of gas chromatography columns.
ISSN:	0953-8984
DOI:	10.1088/0953-8984/14/13/103