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- Title
Thermochemical characteristics of interactions of DL-alanine in aqueous solutions of glycerol, ethylene glycol, and 1,2-propylene glycol.
- Authors
Mezhevoi, I.; Badelin, V.
- Abstract
The method of dissolution calorimetry was used to measure the integral enthalpy of dissolution Δ H of DL-alanine in mixtures of water with glycerol, ethylene glycol, and 1,2-propylene glycol at a concentration of organic solvent up to 0.32 mole fraction. The standard dissolution enthalpy (Δ H) and transport enthalpy of amino acids from water to mixed solvent (Δ H) were calculated. The calculated enthalpy coefficients of pair interactions of the DL-alanine molecules with the polyol molecules are positive and less than these values for L-alanine. The effect of interactions of different types in solution and the structural features of biomolecules and co-solvents on the enthalpy of dissolution characteristics of amino acids were considered.
- Subjects
THERMOCHEMISTRY; ALANINE; CHEMICAL derivatives; GLYCERIN derivatives; ETHYLENE glycol derivatives; PROPYLENE glycols; MATHEMATICAL models; DISSOLUTION (Chemistry); ENTHALPY measurement
- Publication
Russian Journal of General Chemistry, 2012, Vol 82, Issue 11, p1801
- ISSN
1070-3632
- Publication type
Article
- DOI
10.1134/S1070363212110102