Abstract
Density and viscosity of the binary liquid system, tri-ethylene glycol (TEG)+dimethyl sulfoxide (DMSO), were studied over the whole composition range at T=(293.15, 298.15, 303.15, 308.15, 313.15 and 318.15) K under a pressure of 0.1MPa. Based on these density and viscosity data, their excess molar volume (VmE), viscosity deviation (Δη), apparent molar volumes (Vφ,1 and Vφ,2) and partial molar volumes (V_1 and V_2) were determined, respectively. Their VmE and Δη values were then fitted to a Redlich–Kister equation to obtain the coefficient and the standard deviation. Additionally, the intermolecular interaction, obtained from FTIR and UV–Vis, indicated that hydrogen bonding between hydroxyl hydrogen atom in TEG and oxygen atom in DMSO was formed.
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