Survismeter--type I and II for surface tension, viscosity measurements of liquids for academic, and research and development studies.
For centuries surface tension (gamma) and viscosity (eta) data have been measured with individual instruments consuming much time and materials. Thus the two different types of survismeters have been designed and made of borosil glass material for surface tension and viscosity data to rationalize frictional and cohesive forces, respectively. Friccohesity (sigma (sm(-1), second per meter)) is derived from Fric of frictional and cohesity of cohesive forces of the liquid respectively, and denoted by rational coefficient a eta/gamma (sigma). The values of the friccohesity are correlated to the dipole moment of liquids and their plot gives a standard calibration curve along with an equation of the curve with definite values of the coefficients, the friccohesity values are put on the calibration curve to retrieve the dipole moment values. Here, the sigma values for each of dimethylformamide, dimethylsulfoxide and acetronitrile solvents along with their 0.05, 0.10 and 0.20 mol kg(-1) aqueous solutions, respectively, were determined at 293.15K and plotted against their dipole moment values for standard calibration curve. The range of the dipole moment values for calibration curve is pre-decided and the sigma values for homogenous solutions of compositions below their saturation point can be measured with +/-1 x 10(-5)sm(-1).
Chemistry Research Lab, Deshbandhu College, University of Delhi, New Delhi-110019, India. mansingh50@hotmail.com
Man
M
Singh
D001826:Body Fluids / Q000737:chemistry; D002627:Chemistry, Physical / Q000295:instrumentation*; D002853:Chromatography, Liquid / Q000295:instrumentation*; D017276:Friction; D008962:Models, Theoretical; D012996:Solutions / Q000737:chemistry; D013500:Surface Tension; D014783:Viscosity
D012996:Solutions