Effect of thermal oxidation on the crystalline phase of polypropylene in composites with single-walled carbon nanotubes
Abstract
The oxidation of polypropylene (PP) in composites with single-walled carbon nanotubes (SWCNTs) has been studied. Composites were prepared in bulk propylene using a homogeneous catalytic system rac-Me2Si(2-Me-4PhInd)2ZrCl2 activated with methylalumoxane. It has been shown by DSC that the introduction of SWCNTs into the polymer matrix increases the thermal-oxidative stability and significantly affects the nature of the change in the crystalline phase during oxidation. It is shown that the polymer in the composite during oxidation is more homogeneous than pure PP, as indicated by a narrow melting peak characterized by a higher melting temperature.
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