Counterion distribution in a spherical charged sparse brush
F Muller, P Fontaine, M Delsanti, L Belloni… - The European Physical …, 2001 - Springer
The European Physical Journal E, 2001•Springer
The counterion distribution within a spherical polyelectrolyte sparse brush was measured by
small-angle X-ray scattering using contrast variation with different counterions by means of
ion dialysis. The brush was made by self-association of charged diblock copolymers. Thanks
to the contrast variation method, we were able to separate the signal due to the monomers
and the signal due to the counterions. At a small length scale, it is demonstrated that the
system behaves as independent charged rods whose counterion distribution follows the …
small-angle X-ray scattering using contrast variation with different counterions by means of
ion dialysis. The brush was made by self-association of charged diblock copolymers. Thanks
to the contrast variation method, we were able to separate the signal due to the monomers
and the signal due to the counterions. At a small length scale, it is demonstrated that the
system behaves as independent charged rods whose counterion distribution follows the …
Abstract
The counterion distribution within a spherical polyelectrolyte sparse brush was measured by small-angle X-ray scattering using contrast variation with different counterions by means of ion dialysis. The brush was made by self-association of charged diblock copolymers. Thanks to the contrast variation method, we were able to separate the signal due to the monomers and the signal due to the counterions. At a small length scale, it is demonstrated that the system behaves as independent charged rods whose counterion distribution follows the Poisson-Boltzmann model.
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