An Ultrasonic Exploration of Physico-chemical Properties for Mixtures of Cyclic Diether (1,3-dioxolane) with 1-alkanols (C<sub>5</sub>-C<sub>10</sub>) at 298.15K

The present study is oriented towards the demonstration of physico-chemical properties (PCP) and molecular interactions (MI) of the prepared binary mixture of 1,3-dioxolane with 1-alkanols at 298.15K through ultrasonic non-destructive characterization. In the present paper speed of sound (u), viscosities (η) and densities (ρ) have been experimental measured for the binary liquid mixtures (BLM) of cyclic diether with 1-alknols at 298.15K by using ultrasonic interferometer technique. From the experimental values of speed of sound (u), viscosities (η) and densities (ρ) have been used for study of the molecular interaction in the different liquid mixtures using the excess values of parameters such as excess surface tension (S<SUP>E</SUP>), excess available volume (V<sub>a</sub><SUP>E</SUP>), excess relaxation strength (r<SUP>E</SUP>), excess enthalpy (H<SUP>E</SUP>) and excess free volume (V<sub>f</sub><SUP>E</SUP>) variation in the above parameters for the different liquid mixtures is indicative of the nature of molecular interaction between them. For all studied systems, excess surface tension (S<SUP>E</SUP>), excess available volume (V<sub>a</sub><SUP>E</SUP>), excess relaxation strength (r<SUP>E</SUP>), excess enthalpy (H<SUP>E</SUP>) and excess free volume (V<sub>f</sub><SUP>E</SUP>) were negative over the entire mole fraction range of 1,3-dioxolane at measured temperatures. Among the six systems, 1,3-dioxolane with 1-alkanols containing system showed more negative. By using the obtained results, intermolecular interactions were discussed between 1,3-dioxolane and1-alkanols. The obtained results are interpreted in term of intermolecular interaction in binary liquid mixtures.