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-  2016 


DOI: 10.3866/PKU.WHXB201601081

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Abstract:

Sound velocity, density, and viscosity values have been measured at T = 303 K for four binary systems of morpholine + methanol, ethanol, 1-propanol, and 1-butanol. From these data, acoustical parameters, such as adiabatic compressibility, free length, free volume, and internal pressure, have been estimated using the standard relations. The results are interpreted in terms of the molecular interaction between the components of the mixtures. The observed excess values in all the mixtures indicate that the molecular symmetry existing in the system is highly disturbed by the addition of morpholine molecules. The interaction energy terms of the statistical mixing are also verified for these binary systems, and the dipole-dipole interactions are found to be predominant and are greatly affected by the chain length of the primary alkanols.
Sound velocity, density, and viscosity values have been measured at T = 303 K for four binary systems of morpholine + methanol, ethanol, 1-propanol, and 1-butanol. From these data, acoustical parameters, such as adiabatic compressibility, free length, free volume, and internal pressure, have been estimated using the standard relations. The results are interpreted in terms of the molecular interaction between the components of the mixtures. The observed excess values in all the mixtures indicate that the molecular symmetry existing in the system is highly disturbed by the addition of morpholine molecules. The interaction energy terms of the statistical mixing are also verified for these binary systems, and the dipole-dipole interactions are found to be predominant and are greatly affected by the chain length of the primary alkanols

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