抄録
The counterion immobilization has been investigated about a brush configuration of a strong polyelectrolyte, sodium polystyrene sulfonate (NaPSS). Zeta potential of the planar NaPSS brushes was measured under a variety of salt, sodium chloride (NaCl), concentration conditions. Analysis based on Poisson-Boltzmann equation provided the amount of counterion that was unimmobilized and hydrodynamically mobile outside the brush layer. Its salt concentration dependence revealed the counterion immobilization to be weakened by the salt addition with following a power law between the unimmobilized counterion rate and the added salt concentration.
