INFLUENCE OF NATURAL AND SYNTHETIC-POLYMERS ON THE BEHAVIOR OF A CATIONIC SURFACE-ACTIVE MONOMER IN A MONOLAYER AT A WATER-GAS INTERFACE

The influence of synthetic polymers: polyacrylic acid, polyethylene gl ycol, and a natural polymer - immunoglobulin IgG - on the behavior of the cationic surface-active monomer cylacetyl-N,N-dimethyl-N-methacryl oylethylammonium bromide in a monolayer at a water-gas interface was i nvestigated at 293 K. It is suggested that IgG is incorporated into th e monolayer, inducing its condensation; polyethylene glycol binds the hydrate shell of the monomer, leading to expansion of the layer; while polyacrylic acid forms a complex with the cationic surfactant monomer . These hypotheses are confirmed by data on the kinetics of the radica l polymerization of the monomer in a monolayer in the presence of the indicated polymers.