Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7842200 | Journal of Molecular Liquids | 2018 | 7 Pages |
Abstract
Density (Ï), viscosity (η) and surface tension (γ) are always significant physicochemical properties for liquid mixtures. In this work, the Ï, η and γ data for the liquid mixture of tetraethylene glycol (T4EG)â¯+â¯N,N-dimethylformamide (DMF) were systemically measured from 293.15 to 318.15â¯K with a step of 5â¯K and pâ¯=â¯0.1â¯MPa. From these physicochemical properties, viscosity deviation (âη), excess molar volume (VmE), and surface tension deviation (âγ) were calculated. Meanwhile, VmE, âη and âγ of activation functions were fitted with Redlich-Kister (R-K) equation to evaluate the coefficients and standard deviations. The η values of the liquid mixtures were fitted with Grunberg and Nissan equation and three-body McAllister expression. UV-vis and FTIR spectra were measured to discuss the intermolecular interaction of T4EG with DMF, which indicated that there was hydrogen bonds interaction between hydroxyl hydrogen atoms in T4EG and oxygen atoms in DMF.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Shuai Zhang, Long Zhao, Xiaoqing Yue, Bin Li, Jianbin Zhang,