On the structure and dynamics of lithium counterions in polyelectrolyte solutions: A nuclear magnetic resonance and neutron scattering study
- 1 June 1989
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 90 (11), 6709-6715
- https://doi.org/10.1063/1.456290
Abstract
The structure around lithium counterions in polyacrylate solutions has been investigated by neutron diffraction, and it is concluded that small cations remain hydrated when they accumulate around a highly charged polymer. Interactions between the polyion and the counterions over a range outside the hydration shell are also observed. The relaxation rate of 7Li due to dipolar coupling to 17O was obtained by nuclear magnetic resonance. The results indicate that the polyion exerts a moderate influence on the reorientational dynamics of the lithium aqua-ion.Keywords
This publication has 21 references indexed in Scilit:
- Water dynamics in polyelectrolyte solutions from deuterium and oxygen-17 nuclear magnetic relaxationMacromolecules, 1987
- Concentration-dependent main-chain dynamics of sodium polyacrylate as probed by NMR in the semi-dilute regimeThe Journal of Physical Chemistry, 1987
- Small-angle scattering by polyelectrolyte solutions. Hydration and conformation of poly(methacrylic acid)Polymer, 1986
- Neutron scattering determination of local order in amorphous and liquid systems using a position sensitive detectorRevue de Physique Appliquée, 1984
- The structure of an aqueous solution of nickel chlorideProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1983
- Lithium ions in aqueous solutionJournal of Physics C: Solid State Physics, 1980
- Phase-shifted pulse sequence for measurement of spin-lattice relaxation in complex systemsJournal of Magnetic Resonance (1969), 1974
- The structure factor for liquid metals I. The application of neutron diffraction techniquesJournal of Physics C: Solid State Physics, 1968
- Multiple Scattering of Neutrons in Vanadium and CopperPhysical Review B, 1965
- The correlation between activities of polyelectrolytes, measured by the light‐scattering and osmotic methodsJournal of Polymer Science, 1959