1. Non-linear elasticity effects and stratification in brushes of branched polyelectrolytes.
- Author
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Lebedeva, Inna O., Shavykin, Oleg V., Neelov, Igor M., Zhulina, Ekaterina B., Leermakers, Frans A. M., and Borisov, Oleg V.
- Subjects
POLYELECTROLYTES ,ELASTICITY ,BROOMS & brushes ,BOUNDARY layer (Aerodynamics) ,STRUCTURAL analysis (Engineering) - Abstract
Brushes formed by arm-tethered starlike polyelectrolytes may exhibit internal segregation into weakly and strongly extended populations (stratified two-layer structure) when strong ionic intermolecular repulsions induce stretching of the tethers up to the limit of their extensibility. We propose an approximate Poisson-Boltzmann theory for analysis of the structure of the stratified brush and compare it with results of numerical self-consistent field modeling. Both analytical and numerical models point to the formation of a narrow cloud of counterions (internal double electrical layer) localized inside a stratified brush at the boundary between the layers. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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