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Kinetics of Cosurfactant−Surfactant−Silicate Phase Behavior. 1. Short-Chain Alcohols

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Ågren,  P.
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Department of Physical Chemistry, Åbo Akademi University, Porthaninkatu 3-5, FIN-20500 Turku, Finland;

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Linden,  Mika
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Department of Physical Chemistry, Åbo Akademi University, Porthaninkatu 3-5, FIN-20500 Turku, Finland;

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Schüth,  F.
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Department of Inorganic and Analytical Chemistry, Johann Wolfgang Goethe Universität, Marie Curie Strasse 11, D-60439 Frankfurt am Main, Germany ;

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Citation

Ågren, P., Linden, M., Rosenholm, J., Schwarzenbacher, R., Kriechbaum, M., Amenitsch, H., et al. (1999). Kinetics of Cosurfactant−Surfactant−Silicate Phase Behavior. 1. Short-Chain Alcohols. The Journal of Physical Chemistry B, 103(29), 5943-5948. doi:10.1021/jp984684x.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-34CF-5
Abstract
The formation of hexagonal and lamellar surfactant−silicate mesophases at room temperature has been investigated by in situ synchrotron small angle X-ray scattering. Emphasis was given to the influence of butanol and hexanol on the surfactant−silicate phase behavior. The experimental setup included a continuous flow reactor allowing a resolution in time as high as 0.3 s. Depending on the reaction composition, one, two, or three coexisting phases were observed. The results are discussed in terms of time-dependent changes in the concentration of cosurfactant not incorporated into the composite aggregates. Although many of the observed effects are paralleled by well-known properties of aqueous surfactant solutions, important dissimilarities exist. Furthermore, the relative intensity of the high-order reflections are suggested to correspond to the degree of interaggregate condensation in the composite mesophase