Abstract:Melt flow index, polydistribution index, Fourier‐transform infrared spectroscopy, and differential scanning calorimetry have been used for the assessment of the degradation of virgin polypropylene (PP) and PP stabilized with benzofuranone derivatives. When PP samples were subjected to five extrusion cycles, the melt flow index and polydistribution index values of virgin PP sharply increased with the number of extrusion cycles, but the corresponding changes of PP stabilized with benzofuranone derivatives were n… Show more
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