Diffusion Coefficients of the Ternary System β-Cyclodextrin + Caffeine + Water at 298.15 K

Abstract

A Taylor dispersion method is used to measure ternary multicomponent diffusion coefficients of three-component liquid systems. Ternary mutual diffusion coefficients measured by this method (D11, D22, D12, and D21) are reported for aqueous solutions of β-cyclodextrin (β-CD) + caffeine at 298.15 K at carrier concentrations from (0.000 to 0.010) mol·dm−3, for each solute, respectively. These diffusion coefficients have been measured having in mind a better understanding of the structure of these systems and the thermodynamic behavior of caffeine and cyclodextrin in solution.