Investigation of molecular interactions in binary mixtures of homologous series of aliphatic alcohols with 2-methoxyaniline at various temperatures

ABSTRACT

Thermodynamic and transport properties (excess molar volume, excess isentropic compressibility and deviation in viscosity) are calculated from the experimental density, speed of sound and viscosity. The results are analysed in terms of rupture of hydrogen-bonded chain as the dipolar interaction between 2-methoxyaniline and 1-alkanol (1-hexanol, 1-heptanol and 1-octanol) exceeds the intermolecular interaction through dipole-dipole and hydrogen bonding between these unlike molecules. The V^E results are analysed in the light of Prigogine-Flory-Patterson theory. Analysis of each of the three contributions viz. interactional, free volume and P* to V^E has shown that interactional contribution are positive for all systems, the free volume effect and P* contribution are negative for all the mixtures.

KEYWORDS:

• Density
• speed of sound
• viscosity
• 2-methoxyaniline
• 1-alkanols
• PFP theory

Disclosure statement

No potential conflict of interest was reported by the authors.