Thermal analysis in the evaluation of the efficiency of antioxidants action in low-density polyethylene
On the basis of the published and unpublished own investigations the possibility of a practical utilization of the isothermal DTA method for the evaluation of the efficiency of antioxidants was discussed. A method of the experimental determination of the induction period in the oxidation process of PE-LD and of the determination of kinetic constants of the oxidation process was presented and the possibility of using a simplified form of the kinetic equation described. An evaluation of the efficiency of antioxidants action was proposed as well as a criterion for the characterization of the PE-LD – antioxidant system, both based on the values of parameters present in the corresponding kinetic equations.
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