Research of processes of chemical preposition of nickel as a filler of polymer hydrogels

The kinetic characteristics of the reaction of nickel precipitation by hypophosphites in the volume of the solution were studied, depending on the pH of the medium, temperature, oxidant content, nature and concentration of the activator, and the presence of a water-soluble polymer – polyvinylpyrrolidone (PVP). It was found that the presence of PVP in the solution affects the duration of the induction period and the rate of the reduction reaction, and the nature of the effect of PVP significantly depends on the pH of the medium. It has been proven that the use of previously obtained nickel hydrosols as a reduction activator makes it possible to significantly reduce the duration of the induction period of the reduction reaction at low temperatures.