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Association–Dissociation Equilibrium of an Amphiphilic Polyelectrolyte in Aqueous Solution
Author(s) -
Nojima Rika,
Hashidzume Akihito,
Sato Takahiro
Publication year - 2007
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.200750427
Subject(s) - amphiphile , dissociation (chemistry) , copolymer , sedimentation equilibrium , aqueous solution , polyelectrolyte , equilibrium constant , dynamic light scattering , intermolecular force , chemistry , amphiphilic molecule , thermodynamics , materials science , chemical engineering , molecule , polymer , organic chemistry , chromatography , nanotechnology , nanoparticle , physics , ultracentrifuge , engineering
The association–dissociation equilibrium in micellar solutions of an amphiphilic statistical copolymer was investigated by three different experimental techniques of sedimentation equilibrium, dynamic light scattering, and fluorescence. To analyze these experimental data, a novel method was proposed to determine the aggregation number, association constant, intermolecular interaction, and micellar structure. The application of this method to data from the three experimental techniques provided us consistent results characterizing the association–dissociation equilibrium in the present amphiphilic copolymer solutions.