Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9594203 | Solid State Nuclear Magnetic Resonance | 2005 | 6 Pages |
Abstract
The hydration pattern of controlled pore glass, with pore diameter of 237Â Ã
, was investigated using nuclear magnetic resonance. Water proton spin-spin relaxation decay curves were monitored and modeled as two-component exponential decays as a function of hydration. The results are consistent with a geometric model involving a surface water layer and a bulk-like liquid fraction in the form of a plug. The amount of surface water increases as the sample hydrates, until hydration reached approximately a monolayer, at which point a water plug starts to form in the pore, and grow in length at the expense of the surface layer. The results are also analyzed in terms of, and compared to, a recently developed puddle pore-filling model [S.G. Allen, et al. J. Chem. Phys. 106 (1997) 7802-7809].
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
W.E. Troyer, R. Holly, H. Peemoeller, M.M. Pintar,