Relationship between Proton NMR Relaxation Time and Viscosity of Saccharide Solutions

Abstract

Proton relaxation was measured in ¹H-NMR for saccharide solutions. The proton relaxation curve for saccharide solutions was almost mono-exponential and spin-lattice (T₁) and spin-spin relaxation (T₂) times were determined from the curve. T₁ and T₂ were described well by the second order function of solute molality with the correlation coefficient over 0.994. The B-coefficients for T₁ and T₂ correlated well with the B-coefficient of viscosity and also with the number of equatorial OH groups of saccharide molecules, suggesting that the saccharide solution structure was reflected in these parameters in spite of the effect of proton exchange between water and solute.