Issue 8, 2002

Oscillatory kinetics of phase separation in a binary mixture under constant heating

Abstract

The kinetics of phase separation of a binary mixture of water and 2-butoxy ethanol is investigated microcalorimetrically and optically. This fluid has a lower critical point. Surprisingly, when inducing the phase separation by constant heating the mixtures can show pronounced oscillations in the apparent specific heat and the turbidity, i.e., they show cascade nucleation. The oscillations appear after an incubation time of the order of 30–50 min, and their period Δt decreases with the heating rate vs as Δt ∼ vs−0.32±0.03.

Article information

Article type
Paper
Submitted
09 Nov 2001
Accepted
30 Jan 2002
First published
21 Mar 2002

Phys. Chem. Chem. Phys., 2002,4, 1380-1385

Oscillatory kinetics of phase separation in a binary mixture under constant heating

D. Vollmer, J. Vollmer and A. J. Wagner, Phys. Chem. Chem. Phys., 2002, 4, 1380 DOI: 10.1039/B110256G

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