C,T-DEPENDENCE OF THE SELF-DIFFUSION IN CONCENTRATED AQUEOUS SUCROSE SOLUTIONS

The self diffusion coefficients D of the water molecules and of sucros e have been determined by the pulsed field gradient NMR technique over a wide range of temperatures and concentrations (c(max): 70% w/w suc. ). All temperature dependencies can be fitted to a Vogel-Tammann-Fulch er equation, The isothermic concentration dependence of D for the sucr ose is given by a simple exponential concentration dependence.