Interactions of sodium halides with sugars in water: a study of viscosity and (1)H spin-lattice relaxation time.
Viscosity B-coefficients for sodium halides (NaX, X- = Cl-, Br-, and I-) in aqueous monosaccharides (d-glucose, d-galactose, d-xylose, and d-arabinose) were determined from density and viscosity (eta) measurements at 298.15 K. The contributions of solvent property (B1) and the electrolyte-solvent interaction (B2) to the B-coefficient were also obtained together with molar activation energies (Delta(mu)E0(not equal)) of the electrolytes for viscous flow of the aqueous saccharide-electrolyte solution. In addition, 1H spin-lattice relaxation times (T1) were measured for two glycosides in D2O with and without sodium halides. The results show the interactions between X- and the saccharides are in the following order: Cl- > Br- > I-. A linear relationship is observed between the relaxation rate (1/T1) and electrolyte concentration.
Zhuo
Kelei
K
School of Chemistry and Environmental Science, Henan Normal University, Xinxiang, Henan 453007, People's Republic of China. klzhuo@263.net
Liu
Hongxun
H
Tang
Junming
J
Chen
Yujuan
Y
Wang
Jianji
J
D001965:Bromides / Q000737:chemistry*; D009005:Monosaccharides / Q000737:chemistry*; D012965:Sodium Chloride / Q000737:chemistry*; D017670:Sodium Compounds / Q000737:chemistry*; D012974:Sodium Iodide / Q000737:chemistry*; D013113:Spin Labels; D013816:Thermodynamics; D013997:Time Factors; D014783:Viscosity; D014867:Water / Q000737:chemistry*
D001965:Bromides; D009005:Monosaccharides; D017670:Sodium Compounds; D013113:Spin Labels; D014867:Water; D012965:Sodium Chloride; D012974:Sodium Iodide; C027938:sodium bromide