Abstract
The dynamics of molecular liquids and polymers exhibit various ‘‘transitions’’, associated with characteristic changes in properties. The study of molecular motions in dense fluids is of long-standing interest to physicists, chemists, and biologists. The time scale of the dynamics varies with temperature, pressure, entropy, etc., reflects the nature of the intermolecular potential, thus providing fundamental insights into chemical structure and the forces between molecules. The relaxation behaviour also governs to a large extent the physical and mechanical properties underlying many applications of materials so that such studies facilitate material engineering and development. The transient elongation stress growth in the fluids depends on the concentration and molecular weight of the solute as well as the background of viscosity and thermodynamic quality of the solvent. In the present investigation, first we measured density, surface tension, viscosity and ultrasonic velocity then calculated viscous relaxation time 'Borassus Flabellifier' BF and Adansonia digitata AnD aqueous binary mixture at room temperature. Density bottle, pyknometer, and stalogometer used for measurement of density , viscosity and surface tension while ultrasonic velocity in liquid mixture were measured using ultrasonic interferometer Model M-84 made by M/s Mittal Enterprises, New Delhi, at a fixed frequency of 2MHz.
Key-Words / Index Term
'Borassus Flabellifier' BF, Adansonia digitata AnD, Ultrasonic Velocity, Viscous Relaxation Time
References
[1]. A.S. Dukhin and ,P.J.Goetz , Ultrasound for characterizing liquid based food, Dispersion Technology Inc, 364 Adams Street, NY 10507 B.Travers Anatom Technology Ltd, 2803 Shady Grove Court, Baldwin, MD, pp (1-26), 2013.
[2]. C. M. Roland*Characteristic relaxation times and their invariance to thermodynamic conditions, The Royal Society of Chemistry Soft Matter, 4, pp (2316-2322), 2008.
[3]. Sofowara. A, Medicinal plants and traditional medicine in Africa, Spectrum books ltd., Ibadan, Nigeria pp(289 -300), 1993.
[4]. Ferrara, L., Ingredients alimentary, 4(6), pp(13-15), 2005.
[5]. Sofowara. A,. Medicinal plants and traditional medicine in Africa, Spectrum books ltd., Ibadan, Nigeria, pp(289-300), 1993.
[6]. R.C. Weast, CRC Handbook of Physics and Chemistry, Cleveland, Ohio: CRC Press, 58th ed., ISSN : 0147-6262 (1977-1978).
[7]. I.N. Levine, Physical Chemistry, 5th Ed., Tata McGraw Hill Pub. Co. Ltd., New Delhi (2002).
[8]. S. K. Ujle, S. Phadke, B.D.Shrivastava, A.Mishra, N. Dagaonkar, Acoustic Studies of Aqueous Solution of Adansonia Digitata (AnD), Manuscript No. ISCA-ISC-15 Phy S-17-(2012).
Citation
Phadke S., Shrivastava B.D., Ujle S. K., Mishra A.and Dagaonkar N., "Study of Viscous Relaxation Time for BF and AnD Aqueous Binary Mixture," International Journal of Scientific Research in Physics and Applied Sciences, Vol.4, Issue.1, pp.1-3, 2016
