colloid

This work presents the results of research the electromagnetic radiation influence on the change in the geometric shape of spherical silver nanoparticles, obtained by method of photostimulated recovery of Ag ions from salt solution (AgNO3). Сrystalline sodium citrate (Na3C6H5O7) was used to recover Ag by anions of citrate acid. Due to adsorption on the surface of silver nanoparticles and creating electrostatic barrier that prevents aggregation of silver nanoparticles, sodium citrate was also used as a stabilizer.

This paper provides information about macrokinetics of the degradation of polyesterurethanes in model biological media. Special attention was paid to stability of segmented polyurethanes in blood and development of colloid structures at long incubation in blood serum.