Abstract
Effects of Rosemary Antioxidanton, extracted from Rosmarinus officinalis with different solvents, on the antioxidantive properties of polypropylene were evaluated by measuring the oxidation induction temperature. For comparison purposes, the effects of a synthetic phenolic commercial antioxidant Irganox B215, were also analyzed. The results showed that Rao is a more efficient thermal antioxidant for polymers compared to Irganox B215 in low concentration. Rao can be used as a natural antioxidant in place of synthetic antioxidants for polymers. Rao has the characteristic of being harmless and having high activity, good stability and abundant resources to be a good natural antioxidant.
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