Excess properties and spectroscopic studies of binary system 1,4-butanediol + water at T = (293.15, 298.15, 303.15, 308.15, 313.15 and 318.15) K

ABSTRACT

Density and dynamic viscosity data were measured over the whole concentration range for the binary system 1,4-butanediol (1) + water (2) at T = (293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) K as a function of composition under atmospheric pressure. Based on density and dynamic viscosity data, excess molar density (ρ^E), dynamic viscosity deviation (Δν) and excess molar volume (V_m^E) were calculated. From the dynamic viscosity data, excess Gibbs energies (ΔG*^E), Gibbs free energy of activation of viscous flow (ΔG*), enthalpy of activation for viscous flow (ΔH*) and entropy of activation for viscous flow (ΔS*) were also calculated. The ρ^E, V_m^E, Δν and ΔG*^E values were correlated by a Redlich−Kister-type function to obtain the coefficients and to estimate the standard deviations between the experimental and calculated quantities. Based on FTIR and UV spectral results, the intermolecular interaction of 1,4-butanediol with H₂O was discussed.

KEYWORDS:

• Density
• viscosity
• excess properties
• thermodynamics
• spectrometry

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [grant number 21166017]; the Research Fund for the Doctoral Program of Higher Education of China [grant number 20111514120002]; the Natural Science Foundation of Inner Mongolia Autonomous Region [grant number 2014MS0208]; the Program for New Century Excellent Talents in University [grant number NCET-12-1017]; the Inner Mongolia Science and Technology Key Projects, the Program for Grassland Excellent Talents of Inner Mongolia Autonomous Region, the Inner Mongolia Talented People Development Fund and Yongfeng Boyuan Industry Co., Ltd. (Jiangxi Province, China).