REGULARITIES FOR THE PREPARATION OF POLYMER COMPOSITES WITH NANOSIZED PARTICLES OF COBALT OXIDE

The influence of the nature of the water-soluble polymer on the dimensional characteristics, morphology and chemical composition of cobalt-containing particles obtained in polymer films has been investigated. In the presence of polystyrene sulfonic acid and polyacrylic acid, polydisperse particles with a size of 20-50 nm are formed, forming aggregates of various structures. In the poly-N-vinylpyrrolidone film, the resulting particles are uniformly distributed over the film surface, do not form aggregates and have an average size of 30-40 nm. The chemical composition of the resulting particles was determined by X-ray microanalysis.

Multifractional Separation of Polydisperse Particles Varying in Shape and Density

A description of the functional capabilities of the technology of multifraction separation of particles by density and shape in a polydisperse bulk material is given. The technology assumes a consistent and complex use of the effects of quasi-diffusion separation and segregation of particles in a fast shear flow on a gravity slope, as well as the use of traditional technological methods of particle shape calibration. The assessment of the effectiveness of using of multifraction technology for the production of biologically valuable seed material is given.