Solvent dynamics in aqueous PEO–salt solutions studied by nuclear magnetic relaxation
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 84 (1) , 293-307
- https://doi.org/10.1039/f19888400293
Abstract
The dynamical behaviour of water in aqueous PEO solutions has been studied by 2H and 17O nuclear magnetic relaxation measurements. A two-phase model is introduced to analyse the water mobility in the PEO hydration phase. The water mobility in the hydrated phase is retarded by a factor of 2 to 5. The anisotropic reorientation of water molecules in the proximity of PEO and the dP-dependence on the 2H and 17O relaxation rates are interpreted qualitatively by local PEO dynamics, preferential orientations of water molecules and deuteron exchange among water molecules and hydroxy end-groups.This publication has 0 references indexed in Scilit: