Molecular Interactions Studies between Methyl Methacrylate with Heptane, Decane, Dodecane, or Tridecane Using Thermodynamics and Thermoacoustic Parameters

This paper reports new experimental data involving density (ρ), viscosity (η), and ultrasonic velocity (u) for four binary mixtures consisting of methyl methacrylate (MMA) with heptane, decane, dodecane, and tridecane at temperatures 303.15, 308.15, and 313.15 K and atmospheric pressure measured over entire composition range. The experimental data have been used to calculate excess or deviation parameters such as excess molar volume \(\left( {V_{m}^{E}} \right)\) , deviation in viscosity (Δη) and the acoustical parameters namely isentropic compressibility (K_s), free volume (V_f), free length (L_f), and internal pressure (π_i). The excess or deviation properties have been fitted to the Redlich–Kister polynomials and the variation of these parameters with composition were discussed from the viewpoint of molecular interactions prevailing in the mixtures. The properties reported are found to be either positive or negative depending upon nature of liquid mixture and associated molecular interactions of the binary mixtures.