Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5410104 | Journal of Molecular Liquids | 2016 | 9 Pages |
Abstract
Density (Ï) and viscosity (η) data for the binary system of polyethylene glycol 600 (PEG) + 1,2-ethanediamine (EDA) over the entire concentration range at a number of temperatures T = (298.15, 303.15, 308.15, 313.15, and 318.15) K as a function of composition were measured under atmospheric pressure. On the basis of experimental density and viscosity data, the excess properties of PEG (1) + EDA (2) mixtures, including excess molar volumes (VmE), viscosity deviations (â η), excess free energies of activation (â G*E), apparent molar volumes (VÏ,1 and VÏ,2), partial molar volumes (V1Ì
and V2Ì
), and isobaric thermal expansion coefficient (αp), were calculated. Meanwhile, the values of VmE, â η, and â G*E were fitted with the Redlich-Kister equation to derive coefficients and to evaluate the standard deviations (Ï) between the experimental and calculated values. Moreover, on the basis of FTIR and UV-vis spectral data of PEG (1) + EDA (2) mixtures with various concentrations, the intermolecular interaction of PEG with EDA was discussed.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Liang Ma, Feng Sha, Xianshu Qiao, Tianxiang Zhao, Qiang Li, Jianbin Zhang,