Science and Technology Production
Article
Authorship
Date
2010
Publishing House and Editing Place
ELSEVIER SCI LTD
Magazine
POLYMER DEGRADATION AND STABILITY,
vol. 95
(pp. 1636-1641)
ELSEVIER SCI LTD
Summary
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SIGEVA
The use of hydroxytyrosol (3,4-dihydroxy-phenylethanol) as a potential alternative to synthetic compounds in the melt stabilization of polyolefins is considered. Hydroxytyrosol was found to play a role in enhancing the oxidative stability of olive oil, and a similar reduction in polyoleow index and viscosity vs. Shear rate) showed the good antioxidant performance of hydroxytyrosol during polypropylene processing as was also demonstrated by the increase in apparent activation energies and oxidat...
The use of hydroxytyrosol (3,4-dihydroxy-phenylethanol) as a potential alternative to synthetic compounds in the melt stabilization of polyolefins is considered. Hydroxytyrosol was found to play a role in enhancing the oxidative stability of olive oil, and a similar reduction in polyoleow index and viscosity vs. Shear rate) showed the good antioxidant performance of hydroxytyrosol during polypropylene processing as was also demonstrated by the increase in apparent activation energies and oxidation induction parameters after addition to polypropylene (0.1 wt%). Results were compared to those obtained for a commercial synthetic phenolic antioxidant and for a natural compound widely used in polymer stabilization (tocopherol). The main conclusion of this work is the good performance of hydroxytyrosol in polypropylene stabilization during processing and consequently the possibility of its use in formulations with improved resistance to oxidative degradation.
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Key Words
OXIDATION INDUCTION PARAMETERSPOLYPROPYLENEVISCOSITYHYDROXYTYROSOL