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Ultrasonic techniques are known to be non-destructive and have applications in
various fields. In industries, ultrasonic waves are used for polishing and cutting of steel
(Schneider et al., 2008), non-destructive material testing (Hanson, 1986), welding of
metals (Langenecker, 1966), etc. They are also used in the medical field for the diagnosis
of various diseases, such as vascular diseases (Vogelberg et al., 1987), cancer (Liu et al.,
2008), brain disorders (Dussik, 1952) and dental disorders (Zietowska et al., 1976), etc. These ultrasonic waves are applicable in the food industry (Brogna et al., 1998; and Sahi and Sun, 2005), food processing (Lee and Cha, 2009) and analyzing the milk
composition (Liu et al., 2003), etc. Further, they are used in material science for studying
various properties of solids, such as compressibility (Shung and Reid, 1978), specific heat
ratios (Halstenberg et al., 1998) and elasticity (Fahey et al., 2009).
In continuation with our previous work (Baluja and Oza, 2001; Baluja, 2006;
and Baluja, 2008), in the present paper, we have used this technique for a better
understanding of some solutions. For this, density, viscosity, and ultrasonic velocity of solutions of
schiff bases of 4-amino benzoic acid have been measured in 1, 4-dioxane (DO)
and dimethylformamide (DMF) at 308.15K over a wide concentration range.
The experimental data was used for the evaluation of various thermodynamic
and acoustical parameters by which molecular interactions in solutions are interpreted. |
