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

Details Measuring surface-area-to-volume ratios in soft porous materials using laser-polarized xenon interphase exchange NMR Measuring surface-area-to-volume ratios in soft porous materials using laser-polarized xenon interphase exchange NMR

2001-08-21

arxiv.org/abs/cond-mat/0108344v1

Physics

Condensed Matter

Soft Condensed Matter

14 pages of text, 4 figures

Scientific paper

10.1088/0953-8984/14/13/103

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.

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