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KMID : 1059519990430030251
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Journal of the Korean Chemical Society
1999 Volume.43 No. 3 p.251 ~ p.256
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Pressure Dependence of the Viscosity of Toluene
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Kim Jeong-Rim
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Abstract
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Viscosities of toluene were experimentally determined by the falling-ball method at several temperatures and pressures to investigate the pressure and temperature dependence of the viscosity of toluene. With the shear stress of the viscous flow of toluene, the shear free energy, the shear entropy, and the shear enthalpy were defined to discuss the variations of the shear thermodynamic properties with pressure. The effect of temperature and pressure on the shear thermodynamic properties obtained experimentally can be explained by means of the molecular thermal agitation due to temperature incleasing and the steric effect of the closed molecules of to Iuene due to pressure elevation.
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KEYWORD
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