Vapour pressures above solutions of glucose (Glc) in water and maltose in water at both 298.06 and 317.99 K have been measured. Vapour pressures above aqueous solutions of maltotriose, maltotetraose and maltopentaose at 317.99 K have also been measured. The experimental results are compared with predictions from two existing UNIFAC type models available in the literature. Further to this a theoretical model is examined in which existing interaction parameters, calculated for the 1.2-ethanediol/water system using a molecular mechanical approach, are incorporated into the UNIQUAC equation to describe the vapour pressures of the aforementioned series of alpha-(1-4) linked Glc oligosaccharides in aqueous solution. This so-called transference principal is found to be adequate for these systems when used in conjunction with an adjustment to the coordination number used for the lattice based model.
|Journal||FLUID PHASE EQUILIBRIA 194: 947-956 Sp. Iss. SI, MAR 30 2002|
|Publication status||Published - 2002|
Cooke, S. A., Jonsdottir, S. O., & Westh, P. (2002). Phase equilibria of carbohydrates: the study of a series of glucose oligomers from glucose to maltopentaose in aqueous solution - Experimental versus predicted data using various UNIQUAC/UNIFAC models. FLUID PHASE EQUILIBRIA 194: 947-956 Sp. Iss. SI, MAR 30 2002, 194, 947-956.