Results of the influence of external factors on process of immobilization of metal nanoparticles on copolymers
based on unsaturated polyester resins with unsaturated carboxylic acids were considered in the article.
The effects of concentration of cobalt chloride solutions and distribution of metal particles by sizes in the matrix
were studied. Results showed that increasing of cobalt concentration in solution shifts the equilibrium
towards the formation of larger particles, i.e. there is a tendency to flocculation and formation of bi- and
polymodal dispersions. The dependence of the dispersion formed at reduction of metal containing particles on
the reducing agent and its concentration were researched. Potassium hypophosphite and sodium
tetrahydroborate were used as reducing agents. It was found that upon reduction by sodium tetrahydroborate
of cobalt nanoparticles have larger sizes than by using potassium hypophosphite.
