| We demonstrate that aqueous solutions of giant polymerlike nonionic micelles doped with small amounts of ionic surfactants serve as ideal model systems fordoped equilibrium polyelectrolytes. We report systematic light and neutron scattering investigations of the effect of ionic strength, doping level and total concentration on the static properties of dilute and semidilute micellar solutions. In dilute solutions we observe a dramatic influence of (intramicellar) electrostatic interactions on the micellar flexibility, and the results are in close agreement with Monte Carlo simulations. We also analyze the result effect of electrostatic contributions to intermicellar interactions and micellar effect growth. In the semi-dilute regime, strong long-range interactions between micelles occur at low ionic strength and induce liquid-like ordering, and the resulting structure factor peak exhibits the same concentration dependence as previously observed for polyelectrolytes.
for LaTeX users @article{CSommer2002-18,
author = {C. Sommer and J. S. Pedersen and S. U. Egelhaaf and L. Cannavacciuolo and J. Kohlbrecher and P. Schurtenberger},
title = {Wormlike micelles as equilibrium polyelectrolytes: Light and neutron scattering experiments},
journal = {Langmuir},
volume = {18},
pages = {2495-2505},
year = {2002}
}
\bibitem{CSommer2002-18} C. Sommer, J.S. Pedersen, S.U. Egelhaaf, L. Cannavacciuolo, J. Kohlbrecher, P. Schurtenberger,
Wormlike micelles as equilibrium polyelectrolytes: Light and neutron scattering experiments,
Langmuir {\bf 18} (2002) 2495-2505.CSommer2002-18
C. Sommer, J.S. Pedersen, S.U. Egelhaaf, L. Cannavacciuolo, J. Kohlbrecher, P. Schurtenberger
Wormlike micelles as equilibrium polyelectrolytes: Light and neutron scattering experiments
Langmuir,18,2002,2495-2505 |
mk@mat.ethz.ch
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