Journal of Chemical Thermodynamics, Vol.113, 388-393, 2017
Thermodynamic (volume and viscosity) of amino acids in aqueous hydroxypropyl-beta-cyclodextrin solutions at different temperatures
Densities, rho, and viscosities, eta for L-serine, L-threonine, and L-histidine in 0.01 mol.kg(-1) aqueous solutions of hydroxypropyl-beta-cyclodextrin have been measured at T = (293.15, 298.15, 303.15 and 308.15) K using DMA 5000 M densimeter and AMVn viscometer. The rho and eta values have been utilized to evaluate values of the apparent molar volume (V-phi), limiting apparent molar volume (V-phi(0)) and the slope (S-V), transfer volume (Delta V-tr(phi)0), limiting apparent molar expansibilities (phi(0)(E)), hydration number (n(H)), Falkenhagen coefficient (A) and Jones-Dole coefficient (B) of the systems studied. The results are interpreted in terms of solute-solvent interactions based on a co-sphere overlap model and host-guest interactions. (C) 2017 Elsevier Ltd.