Spin-lattice relaxation measurements of Poly(Ethylene Oxide) in aqueous salt solutions

Author

Kathryn Elaine Dowlen

Date of Award

12-1994

Degree Type

Thesis

Degree Name

Master of Science

Major

Chemistry

Major Professor

Jeffery Kovac

Committee Members

John Shibata,

Abstract

The effect of salt on the internal motions of poly(ethylene oxide) (PEO) in aqueous solution was investigated using ₁₃C spin-lattice (T&sub1;) relaxation nuclear magnetic resonance experiments. Comparative studies with short chain PEO and diethylene glycol monoethyl ether aided in the interpretation of the polymer data. Isotropic and internal libration models were used to interpret the interactions of ions with the molecular motion. It was concluded that the internal motions of PEO are affected by salt in solution, but a larger effect is found in the small molecule analogue cases.

Recommended Citation

Dowlen, Kathryn Elaine, "Spin-lattice relaxation measurements of Poly(Ethylene Oxide) in aqueous salt solutions. " Master's Thesis, University of Tennessee, 1994.
https://trace.tennessee.edu/utk_gradthes/11514