Underwater impulse plasma can be used for one-stage production of composite polymer materials containing metal oxide nanoparticles. It was found that the electrode sputtering rate and the phase composition of the formed particles depend on the medium in which the discharge burns: water or a polymer solution. The stages of the formation of an underwater discharge impulse were discussed and the discharge parameters were determined, such as the current density, the field strength in the plasma, and the electron drift velocities. The energy distribution channels in the underwater impulse discharge are analyzed, and it is established that about half of the input energy is spent on heating the solution. The totality of the obtained data can be used in the development of technological foundations for the use of pulsed underwater discharges in the industrial synthesis of polymer nanocomposites.
