Self-Organizing Particles of Polymer–Colloid Complexes Based on Various Molecular Weight Copolymers of N,N'-Diallyl-N,N'-dimethylammonium Chloride with Sulfur Dioxide

The formation of polymer–colloid complexes by the interaction of N,N'-diallyl-N,N'-dimethylammonium chloride–sulfur dioxide copolymers of various molecular weight and sodium dodecyl sulfate is studied. The complexes are characterized by turbidimetric titration and laser light diffraction/scattering. The average particle size of polymer–colloid complexes varies in the range of 150‒200 nm depending on the composition of the reaction mixture and the molecular weight of the polyelectrolyte. The critical aggregation concentrations of sodium dodecyl sulfate in the presence of various molecular weight copolymers are determined. It is shown that the molecular weight of the polycation strongly affects boundaries of the region, in which the phase of polymer–colloid complexes appears, and the sizes of their particles. The ability of complex particles to solubilize molecules of substances poorly soluble in water is evaluated.