Journal Article

PreJuSER-46879

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dynamics of the swollen lamellar phase

Schilling, T.FZJ* ; Theissen, O. ; Gompper, G.FZJ*

2001
Springer Berlin

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Please use a persistent id in citations: doi:10.1007/s101890170148

Abstract: We investigate the dynamical behavior of lamellar phases in ternary amphiphilic systems of water, oil and amphiphile. The interaction between the amphiphilic monolayers is described by the steric interaction due to thermal fluctuations for uncharged, and by electrostatic interactions for charged systems. The dynamics of the system is determined by the hydrodynamics of the fluid layers. The basic parameters of our model are the viscosities of the two solvents, the average thicknesses of the oil and water layers. and the bending rigidity. The model allows to consider different monolayer interactions across the oil and water lavers. Relaxation rates are calculated for arbitrary wave vectors parallel and perpendicular to the average monolayer plane. We find that there is a quite complex crossover behavior from a q(parallel to)(2) law for small parallel wave vectors to a q(parallel to)(3) law for large q(parallel to). We discuss the relevance of our result for the interpretation of dynamic light-scattering and neutron-spin-echo experiments for these systems.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Theorie II (IFF-TH-II)

Research Program(s):

1. Polymere, Membranen und komplexe Flüssigkeiten (23.30.0)

Appears in the scientific report 2001

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