Premium
Polyelectrolyte adsorption and stabilization of silica‐suspensions
Author(s) -
Bauer Doris,
Killmann Erwin
Publication year - 1998
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19981260114
Subject(s) - polyelectrolyte , polyelectrolyte adsorption , adsorption , molar mass , flocculation , chemical engineering , suspension (topology) , ionic strength , cationic polymerization , colloid , chemistry , materials science , polymer chemistry , aqueous solution , organic chemistry , polymer , mathematics , homotopy , pure mathematics , engineering
The adsorption of cationic polyelectrolytes on colloidal silica‐particles is investigated. The polyelectrolytes poly(diallyl‐dimethyl‐ammoniumchloride) PDADMAC of different molar mass have been used. The adsorbed amount is influenced by the ionic strength and pH of the suspension and the molar mass of the macromolecule. The adsorption determines the zetapotential of the covered particles. The electrostatic interaction between the particles as well as the structure of the adsorbed polyelectrolytes play an important role in the stabilization and flocculation behaviour of the polyelectrolyte covered suspensions.