The mathematical modeling of the inhibition mechanisms of sterically-hindered phenols in oxidizing low-density polyethylene melt

A kinetic investigation of the inhibition mechanisms of 2,6-di-tert-butylphenol and 2,6-di-tert-butyl-4-methylphenol in a low-density polyethylene melt oxidizing at 120, 130 and 140 degrees C has been carried out and the mathematical models of the mechanisms developed. At each temperature the key reactions in the mechanisms of action of the antioxidants were identified and the corresponding kinetic parameters determined. The comparison of the efficiencies of these antioxidants and 2,4,6-tri-tert-butylphenol studied earlier has been carried out.