Calculation of the Viscosity of a Disperse System of Silver Nanoparticles with Adsorption Polymeric Layer of Copolymer of Ethylene and Maleic Acid in Aqueous Medium

A model of stabilization of spherical silver nanoparticles by amphiphilic macromolecules of a copolymer of ethylene and maleic acid in an aqueous medium based on experimental data previously obtained by transmission electron microscopy and dynamic light scattering is presented. The applicability of various viscometric equations for describing the behavior of a polydisperse system in the course of electrostatic stabilization of nanoparticles is considered. An expression for the relative viscosity of dispersions of spherical silver nanoparticles with an adsorption layer of a copolymer of ethylene and maleic acid in an aqueous medium is obtained. This equation relates the relative viscosity to the chemical structure of the polymer and the molecular weight, concentration, and radius of nanoparticles taking into account the presence of an adsorption polymer layer.