Über die kinetik des thermischen abbaues von polystyrolen

The results of the kinetic isothermal, thermal-dynamic (i.e. with constant heating rate) and of the gaschromatographic-pyrolytic study of the thermal degradation of different polystyrenes show the mechanism of the degradation reaction to be complex and not simple depolymerisation. The kinetic parameters of the thermal degradation depend as well on the molecular weight as on the nature of the polystyrene and the degree of conversion. On these reasons, one observes under thermal-dynamic conditions an influence of the heating rate on the total activation energy.