Formation and kinetics of transient metastable states in mixtures under coupled phase ordering and chemical demixing

Details Formation and kinetics of transient metastable states in mixtures under coupled phase ordering and chemical demixing Formation and kinetics of transient metastable states in mixtures under coupled phase ordering and chemical demixing

2009-04-28

arxiv.org/abs/0904.4460v1

EPL, vol 86(4), 46006 (2009)

Physics

Condensed Matter

Materials Science

17 pages, 5 figures accepted for publication in EPL

Scientific paper

We present theory and simulation of simultaneous chemical demixing and phase ordering in a polymer-liquid crystal mixture in conditions where isotropic- isotropic phase separation is metastable with respect to isotropic-nematic phase transition. It is found that mesophase formation proceeds by a transient metastable phase that surround the ordered phase, and whose lifetime is a function of the ratio of diffusional to orientational mobilities. It is shown that kinetic phase ordering in polymer-mesogen mixtures is analogous to kinetic crystallization in polymer solutions.

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