c, T-Dependence of the Self Diffusion in Concentrated Aqueous Sucrose Solutions

C. Buttersack and K. Buchholz Institut für landwirtschaftliche Technologie und Zuckerindustrie an der TU Braunschweig, TU Braunschweig, Langer Kamp 5, D-38106 Braunschweig, Bundesrepublik Deutschland Z. Naturforsch. 49c, 258-264 (1994); received December 2,1993 Diffusion, Sucrose, Water, Aqueous Solution The self diffusion coefficients D of the water molecules and of sucrose have been deter­ mined by the pulsed field gradient NMR technique over a wide range of temperatures and concentrations (cmax: 70% w/w sue.). All temperature dependencies can be fitted to a VogelTammann-Fulcher equation. The isothermic concentration dependence of D for the sucrose is given by a simple exponential concentration dependence.