COEFFICIENT OF VOLUME EXPANSION AND THERMOACOUSTIC PARAMETERS IN 2 NATURAL OILS

The Sharma constant S-0, the isochoric temperature coefficient of volu me expansivity, the isochoric temperature coefficient of internal pres sure. the reduced compressibility, the reduced volume and a few other acoustic parameters are evaluated for two Natural Oils namely Mango Ke rnel fat and Sal Seed fat using only the coefficient of volume expansi on. The Sharma constant which was shown by Sharma to be a constant in a number of non-mesomorphic systems is bound to be a constant in the t wo oils/fats, studied by the authors with the same character of consta nt value both in the isotropic and nematic phases with anomalous behav iour and pre-transitional effects at and in the immediate vicinity of the phase transition temperature. These results are also in conformity with our Ultrasonic results published elsewhere (MURTHY et al.).