Oxidation kinetic of volatile polymer degradation products

Kinetic conformities of high-temperature oxidation of volatile polymer degr adation products for some general classes of polymers and polymeric materia ls are investigated. For the polymethylmetacrylate, isoprene, divinyl and e thylene-propylene rubbers oxidation kinetic is investigated in the dependen ce of pyrolysis temperature and in correlation with the structure of degrad ation products. The change of activation energy of the oxidation process is shown depending on the temperature of polymer pyrolysis. For the polymethy lmetacrylate, correlation between ignition delay time and rare constant of oxidation is proved. For the polycarbonate-based compositions influence of general types of fire retardant additives, including bromine-and phosphorus -containing products, on the: oxidation activation energy is investigated. (C) 1999 Elsevier Science Ltd. All rights reserved.