Phase Transitions in Lyotropic Nematic Gels

Details Phase Transitions in Lyotropic Nematic Gels Phase Transitions in Lyotropic Nematic Gels

2002-02-15

arxiv.org/abs/cond-mat/0202262v3

Eur. Phys. J. E 8, 403 (2002).

Physics

Condensed Matter

Soft Condensed Matter

13 pages Revtex, 10 figures, submitted to EPJ E

Scientific paper

10.1140/epje/i2002-10022-4

In this paper, we discuss the equilibrium phases and collapse transitions of a lyotropic nematic gel immersed in an isotropic solvent. A nematic gel consists of a cross-linked polymer network with rod-like molecules embedded in it. Upon decreasing the quality of the solvent, we find that a lyotropic nematic gel undergoes a discontinuous volume change accompanied by an isotropic-nematic transition. We also present phase diagrams that these systems may exhibit. In particular, we show that coexistence of two isotropic phases, of two nematic phases, or of an isotropic and a nematic phase can occur.

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