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Polysulfobetaines and corresponding cationic polymers. IV. Synthesis and aqueous solution properties of cationic poly(MIQSDMAPM)
Author(s) -
Lee WenFu,
Hwong GowYoug
Publication year - 1996
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/(sici)1097-4628(19960124)59:4<599::aid-app5>3.0.co;2-o
Subject(s) - cationic polymerization , aqueous solution , polymer chemistry , polyelectrolyte , copolymer , halide , intrinsic viscosity , chemistry , ammonium , salt (chemistry) , flocculation , reduced viscosity , styrene , polymer , inorganic chemistry , organic chemistry
A cationic poly(methyl iodide quaternized styrene‐dimethylaminopropylmaleimide) copolymer [poly(MIQSDMAPM)] was synthesized by imidizing styrene‐maleic anhydride (SMA) copolymer. Its aqueous solution properties were studied by measurements of reduced viscosity, intrinsic viscosity, and a flocculation test. The reduced viscosity and intrinsic viscosity of this cationic polyelectrolyte were related to the types and concentration of the added salt. “Soft” salt anions were more easily bound to the quaternary ammonium cation (R 4 N + ) of poly(MIQSDMAPM) than “hard” salt anions. Halide anions are hard anions; consequently, hard cations were more easily atracted to halide anions, and reduced binding degree of halide anion on the quaternary ammonium group (R 4 N + ). Some salt ions were observed to strongly attract the quaternary ammonium group of the cationic polymeric side chain and resulted in agglomeration of the polymers. A comparison of various flocculants as to the effect of flocculation was made in this study. © 1996 John Wiley & Sons, Inc.