Liquid crystalline states of surfactant solutions of isotropie micelles |
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| Authors: | Carey Bagdassarian William M Gelbart Avinoam Ben-Shaul |
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| Institution: | (1) Department of Chemistry, University of California, 90024 Los Angeles, California;(2) Department of Physical Chemistry, and Fritz Haber Molecular Dynamics Research Center, Hebrew University, 91904 Jerusalem, Israel |
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| Abstract: | We consider micellar solutions whose surfactant molecules prefer strongly to form small, globular aggregates in the absence of intermicellar interactions. At sufficiently high volume fraction of surfactant, the isotropic phase of essentially spherical micelles is shown to be unstable with respect to an orientationally ordered (nematic) state of rodlike aggregates. This behavior is relevant to the phase diagrams reported for important classes of aqueous amphiphilic solutions. |
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| Keywords: | Micelle excluded volume liquid crystallinity self-assembly isotropic-nematic transition packing entropy |
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