Excess Properties and Spectroscopic Studies for Binary System of Polyethylene Glycol 200 (1) + Dimethyl Sulfoxide (2) at T = (298.15 to 318.15) K

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• 作者：Tianxiang Zhao ; Qiang Xu ; Jianbai Xiao ; Xionghui Wei
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2015
• 出版时间：July 9, 2015
• 年：2015
• 卷：60
• 期：7
• 页码：2135-2145
• 全文大小：469K
• ISSN：1520-5134

文摘

This work reports density and viscosity data for binary system of polyethylene glycol 200 (PEG) (1) + dimethyl sulfoxide (DMSO) (2) over the whole concentration range at T = (298.15, 303.15, 308.15, 313.15, and 318.15) K as a function of composition under atmospheric pressure. From experimental density and viscosity data, the excess molar volume (V_m^E), viscosity deviation (螖畏), the excess Gibbs free energies of activation for viscous flow (螖(G*)^E), and the apparent molar volumes (V_蠁,i) were calculated. The V_m^E, 螖畏, and 螖(G*)^E were fitted to a Redlich鈥揔ister equation to obtain the coefficients and to estimate the standard deviations between the experimental and calculated quantities; meanwhile, based on the kinematic viscosity data, the viscous flow thermodynamic parameters were also calculated. In addition, based on FTIR and UV鈥搗is spectra for the binary system of PEG (1) + DMSO (2) with various concentrations, the intermolecular interaction of PEG with DMSO was discussed.