Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
595929 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2009 | 9 Pages |
Abstract
Interaction of charged particles, induced by adding an oppositely charged polyion, gives rise to intriguing aggregation phenomena. The presence of short-range interactions in competition with electrostatic repulsions results, in an interval of concentrations around the inversion point, in the formations of long-lived clusters of polyelectrolyte-decorated particles. We will show that the whole aggregation scenario can be justified as due to an heterogeneous charge distribution at the particle surface, as a consequence of the correlated polyion adsorption, on the basis of a recently model proposed by D. Velegol, P. Thwar, Langmuir 17 (2001) 7687–7693.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
S. Sennato, D. Truzzolillo, F. Bordi, F. Sciortino, C. Cametti,