Density and viscosity of sorbitol/maltitol in l-ascorbic acid aqueous solutions at T = (293.15 to 323.15) K

Abstract

Densities, ρ, and viscosities, η, of ternary solutions (sorbitol/maltitol+l-ascorbic acid+water) and binary solutions (sorbitol/maltitol+water) were measured at T=(293.15 to 323.15)K under atmospheric pressure. Guimarães equation and extended Jones–Dole equation were applied to correlate the densities and viscosities of the solutions, respectively. The apparent molar volume (Vφ), limiting partial molar volume (Vφ0) and limiting partial molar volume of transfer (ΔtrVφ0) were calculated by densities. The free energy of activation per mole of solvent (Δμ10≠) and free energy of activation per mole of solute (Δμ20≠) were calculated through the obtained viscosity B-coefficients, respectively. These significant parameters are helpful to understand the interactions in sugar alcohols+l-ascorbic acid+water ternary solutions and also to study the substance conversion and transfer in living liquid system.