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Preparation and Solution Properties of Amphiphilic Sulfonated Acrylamide Copolymers
Author(s) -
Karlsson Lina E.,
Jannasch Patric,
Wesslén Bengt
Publication year - 2002
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20020301)203:4<686::aid-macp686>3.0.co;2-c
Subject(s) - copolymer , polymer chemistry , aqueous solution , amphiphile , monomer , dynamic light scattering , chemistry , polyelectrolyte , size exclusion chromatography , viscometer , cationic polymerization , polymer , materials science , organic chemistry , viscosity , nanotechnology , nanoparticle , composite material , enzyme
Copolymerization of 2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid (AMPS) and N ‐ tert ‐butylacrylamide has been carried out in methanol at 60°C using AIBN as initiator. Both IR and 1 H NMR spectroscopy indicated that monomer conversions exceeding 95% were reached in the copolymerizations. Copolymers containing more or equal to ≈ 15 mol‐% AMPS were soluble in water and had an amphiphilic character. Analysis by dilute solution viscometry, quasi‐elastic light scattering, and size exclusion chromatography in water and aqueous KCl solution showed that the AMPS homopolymer and the copolymers behave as polyelectrolytes. Light scattering analysis and atomic force microscopy indicated the presence of aggregates in aqueous solutions of a copolymer containing 15 mol‐% AMPS. Gravimetrical measurements showed that the water absorption of the copolymers in humidified air increases almost linearly with the AMPS content of the copolymers.