Chemiluminescence and reactivity of the composites based on blends of polypropylene and polyamide

International Conference "Modern Technologies and Materials of New Generations"

Vorontsov, N.V.^1,2 ; Popov, A.A.^1,2 ; Margolin, A.L.^2

Plekhanov Russian University of Economics, 36 Stremyanny per., Moscow

117997, Russia^1

Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina str., Moscow

119334, Russia^2

关键词: Aliphatic polyamides;    Isotactic polypropylene;    Peroxyl radical;    Photo-induced;    Physical interactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/286/1/012003/pdf
DOI  :  10.1088/1757-899X/286/1/012003

来源: IOP

【 摘 要 】

The effect of the composition of blends based on isotactic polypropylene (PP) and aliphatic polyamide 6/66-4 (PA) on the rate of photo-oxidation of their mixtures in air at room temperature has been studied. The decay of photoinduced chemiluminescence was studied to determine the kinetics of peroxyl radical termination in composites and the rate constants of this process depending on the composition of the mixtures. In the presence of PA, the rate of photo-oxidation of mixtures is much higher than the rates of photo-oxidation of separately taken components, PP and PA. Thus, the kinetics of photo-oxidation of mixtures differs from the simple sum of photo-oxidation kinetics of PP and PA, which should be expected in the absence of chemical and physical interaction of the components of the mixture. A decrease in the rate constants due to PA additives indicates a decrease in the mobility of molecules in the composites and explains the observed increase in photo-oxidation of mixtures.