Abstract
The probability distribution of chain conformations in micellar aggregates of arbitrary geometry is derived using two alternative approaches: (i) By minimizing the free energy functional of a single chain, subject to the packing constraints imposed by the presence of neighboring chains in the hydrophobic core; (ii) By expanding the many-chain configurational integral in terms of the excluded volumes characterizing one (‘central’) chain in a given conformation. The central assumption in both derivations is that chain organization and conformational statistics in amphiphilic aggregates are governed by the shortrange, repulsive, inter-molecular interactions. Bond order parameter profiles and other single chain properties which can be calculated using the conformational probability distribution are in good agreement with experimental and computer simulation studies. Yet, our main concern in this paper is the theoretical (statistical thermodynamic) description of chain organization within the hydrophobic core, with particular emphasis on the role of micellar geometry. In this spirit a considerable part of the discussion is devoted to comparisions with other theoretical approaches.
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Ben-Shaul, A., Szleifer, I., Gelbart, W.M. (1986). Statistical-Thermodynamic Theory of Surfactant Organization in Micelles and Bilayers. In: Mittal, K.L., Bothorel, P. (eds) Surfactants in Solution. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1831-6_2
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DOI: https://doi.org/10.1007/978-1-4613-1831-6_2
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