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Flocculation behavior of some cationic polyelectrolytes
Author(s) -
SmithPalmer Truis,
Campbell Nicole,
Bowman Janice L.,
Dewar Patricia
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070520916
Subject(s) - cationic polymerization , polyelectrolyte , flocculation , settling , molar mass , polymer , copolymer , adsorption , chemical engineering , hydrolysis , polymer chemistry , chemistry , polyacrylamide , materials science , organic chemistry , thermodynamics , engineering , physics
The settling rates and adsorption isotherms produced by a variety of suites of cationic polyelectrolytes in 3% kaolin suspensions were measured. Settling rates increased with molar mass even for low‐mass, high‐charge polymers. The very high settling rates produced by cationic copolymers of acrylamide decreased as the charge density of the polymer used increased. Hydrolysis of unbuffered polymers occurred over time and produced large changes in the effectiveness of the polymers. This is attributed to conformational changes. © 1994 John Wiley & Sons, Inc.