Self-Diffusion Coefficients of Hydrophobic Ethoxylated Urethane Associating Polymers Using Pulsed-Gradient Spin-Echo Nuclear Magnetic Resonance

1995 ◽  
Vol 28 (2) ◽  
pp. 531-538 ◽  
Author(s):  
Baihua Rao ◽  
Yoshimitsu Uemura ◽  
Lara Dyke ◽  
Peter M. Macdonald
1970 ◽  
Vol 25 (5) ◽  
pp. 777-780 ◽  
Author(s):  
Gottfried J. Krüger ◽  
Rene Weiss

The self diffusion coefficients of acetone, ethanol, diethoxymethane, diethylether, diglycole-dimethylether, 1,2-dimethoxyethane, acetic acid, methyliodide, tetrahydrofuran, toluene, trimethylphosphite, and 1,3,5-trifluorobenzene have been measured in dependence on temperature using nuclear magnetic resonance spin echo techniques.


1971 ◽  
Vol 26 (1) ◽  
pp. 94-98 ◽  
Author(s):  
G. J. Krüger ◽  
W. Müller-Warmuth ◽  
A. Klemm

Abstract The self-diffusion coefficients of liquid 6Li and 7Li have been measured using NMR spin echo techniques with pulsed gradients. In the experimental procedure, and in the sample preparation, particular attention has been paid to a relative, rather than to an absolute measurement. At 190 °C, the ratio of the self-diffusion coefficients is found to be D6 (x6 = 1) / D7 (x7 = 1) = 1.09 ± 0.06, in agree­ment with the square root of the mass ratio (m7-m6)1/2 = 1.08. In an atomic mixture of 80% 6Li and 20% 7Li, D6 (x6 = 0.8)/D7 (x6 = 0.8) = 1.0 3 ± 0.08 has been obtained


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