ABSTRACT
T. V. MONAKHOVAA,1 P. M. NEDOREZOVA,2 S. V. POL’SHCHIKOV,2 A. A. POPOVА,3 A. L. MARGOLIN,1 and A.YA. GORENBERG2
1Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia; E-mail: monakhova@sky.chph.ras.ru
2Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
3Plekhanov Russian University of Economics, Moscow, Russia
Abstract ................................................................................................. 146 8.1 Introduction .................................................................................. 146 8.2 Experimental Part ......................................................................... 147 8.3 Results and Discussion ................................................................ 149 8.3.1 Distribution of Graphite in
Nanocomposites PP/FGG ................................................ 149 8.3.2 Oxidation of PP-Graphite Nanocomposites .................... 151 8.3.3 Chemiluminescence of Graphite-PP Nanocomposites ... 153 8.4 Conclusions .................................................................................. 156 Keywords .............................................................................................. 156 References ............................................................................................. 157
ABSTRACT
The reactivity of isotactic polypropylene (PP)–fine-grained graphite nanocomposites in the reactions of thermooxidation and chemiluminescence is studied. It is demonstrated that, even at low (less than 1%) concentrations, graphite retards the oxidation of polypropylene and speeds up the termination of PP peroxy macroradicals. It has been concluded that the mechanism of the protective action of graphite in the oxidation of PP involves inhibition due to the interaction of graphite nanoparticles with peroxy PP macroradicals. The average size of the reactive graphite particles was estimated from kinetic data on the reaction of graphite with radicals.
