Abstract
The Gibbs energy of transfer is determined via the interphase distribution of a substance between two immiscible phases. β-cyclodextrin (βCD) from water is used in a mixture with dimethylsulfoxide (χDMSO = 0.0–0.6 mole fraction) at 298 K. The effect of the solvent’s composition has on the thermodynamic characteristics of βCD solvation is analyzed. It is found that increasing the content of DMSO in a mixed solvent leaded to negligible desolvation of cyclodextrin, due probably to the compensation effect between the enthalpy and entropy components of the Gibbs energy of βCD transfer.
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Funding
This work was performed at the Ivanovo State University of Chemical Technology’s Institute of Thermodynamics and Kinetics of Chemical Processes as part of a State Task, topic no. FZZW-2020-0009. It was funded by Russian Foundation for Basic Research and VAST, project number 19-53-54004; and by Vietnam National Foundation for Science and Technology Development (NAFOSTED), under Grant Number 104.06-2017.329.
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Kuzmina, I.A., Volkova, M.A., Marov, A.S. et al. Thermodynamics of the Solvation of β-Cyclodextrin in Water–Dimethylsulfoxide Solvents. Russ. J. Phys. Chem. 94, 2034–2037 (2020). https://doi.org/10.1134/S0036024420100180
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DOI: https://doi.org/10.1134/S0036024420100180