UNIVERSAL EXPONENTS FOR A NONIONIC MICELLAR SOLUTION OF TETRAETHYLENE GLYCOL DECYLETHER IN WATER

The angular distribution of light intensity scattered from nonionic micellar solution of tetraethylene glycol n-decylether (C10C4) in water has been examined close to its critical point of mixing. Including multiple-scattering corrections to the light-scattering data, we have found the exponent gamma = 1.25 +/- 0.02 for the osmotic susceptibility chi-T and the exponent nu = 0.63 +/- 0.01 for the long-range correlation length xi in the temperature range of 1.03 x 10(-4) less-than-or-equal-to epsilon less-than-or-equal-to 4.25 x 10(-3), where epsilon = (T(c) - T)/T(c). The values of the critical exponents obtained in this work are in good agreement with the theoretical and experimental ones for three-dimensional Ising systems.