  Physical mechanisms of the interaction of cold plasmas with organic surfaces
are discussed. Trapping of plasma ions by the CH2 groups of polymer surfaces
resulting in their electrical charging is treated. Polyethylene surfaces were
exposed to the cold radiofrequency air plasma for different intervals of time.
The change in the wettability of these surfaces was registered. The
experimentally established characteristic time scales of the interaction of
cold plasma with polymer surfaces are inversely proportional to the
concentration of ions. The phenomenological kinetic model of the electrical
charging of polymer surfaces by plasmas is introduced and analyzed.
