Ap. Froba et al., Determination of several thermophysical properties of toluene using a single experimental setup, FLU PH EQUI, 161(2), 1999, pp. 337-351
Dynamic light scattering can be used for the determination of several therm
ophysical properties of interest using one single experimental setup. Light
scattering from bulk fluids allows the measurement of thermal diffusivity
and sound velocity. Results are presented for toluene, an important referen
ce fluid, over a wide temperature range up to the critical point at saturat
ion conditions for both the liquid and the vapour phase. Furthermore, it is
demonstrated that the same setup can be used for the determination of surf
ace tension and kinematic viscosity of the liquid phase from light scatteri
ng by surface waves on a vertical liquid layer. All experiments are based o
n a heterodyne detection scheme and signal analysis by photon correlation s
pectroscopy. The results are discussed in comparison with literature data.
(C) 1999 Elsevier Science B.V. All rights reserved.