Heat treatment influence on magnetic activity of chemical polyvinylidenfluoride carbonification products

The results of heat treatment influence on chemical polyvinylidenfluoride carbonification products are given with the help of electron paramagnetic resonance spectroscopy method. For the first time step-like increase of paramagnetic centers concentration has been observed at heat treatment at over 250$^\circ$ С which is accompanied by the changes in parameters of electron paramagnetic resonance signals. At conservation of synthesized samples there is partial decrease of magnetic activity within three months.