Phase separation in an unstable system polydimethylsiloxane-diethyl carbonate

Abstract
The effective growth rate of critical fluctuations in the unstable region of the system polydimethylsiloxane-diethyl carbonate was found to be time independent for an appreciable time and the negative composition diffusivity D* to be represented by the power law of D*∝εν* with ν*≈0.62, where ε=|(T−Tc)Tc|. The value of D* was approximately three times larger than the positive composition diffusivity D at the same ε in the stable region.