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

Literature Information

Publication Date 2002-03-21
DOI 10.1039/B110256G
Impact Factor 3.676
Authors

J. Vollmer, A. J. Wagner


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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.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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