منابع مشابه
Interacting rigid polyelectrolytes
A new description of semidilute solutions of rigid polyelectrolyte chains is
متن کاملInteracting rigid polyelectrolytes
The persistence length of charged linear polymers in semidilute solution must increase substantially upon addition of salt. For very long polymers the persistence length increases as the salt concentration to the 5/2 power provided this salt concentration is not too large. In deriving this scaling we correct our previous prediction in light of a recent paper by Barrat and Joanny, and in agreeme...
متن کاملTheory and simulations of rigid polyelectrolytes
We present theoretical and numerical studies on stiff, linear polyelectrolytes within the framework of the cell model. We first review analytical results obtained on a mean-field Poisson-Boltzmann level, and then use molecular dynamics simulations to show, under which circumstances these fail quantitatively and qualitatively. For the hexagonally packed nematic phase of the polyelectrolytes we c...
متن کاملCharge Regulation of Interacting Weak Polyelectrolytes
We introduce a generalized nonuniform mean-field formalism to describe the dissociation of weak rodlike polyelectrolytes (PEs). Our approach allows for two-sublattice symmetry breaking which in titration curves is associated with a plateau for intermediate dissociation degrees. We first test our method in the case of a single weak PE by comparison with exact enumeration studies and show that it...
متن کاملEffective Interactions Between Rigid Polyelectrolytes and Like-charged Planar Surfaces
We study the effective interaction between a planar array of uniformly negatively charged, stiff rods parallel to a negatively charged planar substrate in the absence of salt in a continuous, isotropic dielectric medium. Using Brownian dynamics simulations, we examine the general effects of counterion valence, rod spacing, macroion charge densities, and the rod size on the attractive rod-surfac...
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ژورنال
عنوان ژورنال: Journal de Physique II
سال: 1994
ISSN: 1155-4312,1286-4870
DOI: 10.1051/jp2:1994188