Metal-containing phenolic antioxidants—Physical behaviour and efficiency of stabilisation in polypropylene

Efficiencies of stabilisation of ten metal-containing phenolic antioxidants were measured in isotactic polypropylene. The influence of physical behaviour (mobility, volatility, solubility) on the efficiency of stabilisation was investigated. All the antioxidants examined contained the same hindered...

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Bibliographic Details
Published in:Polymer degradation and stability 1990, Vol.27 (3), p.297-307
Main Authors: TOCHACEK, J, SEDLAR, J
Format: Article
Language:English
Subjects:
Applied sciences
Compounding ingredients
Exact sciences and technology
Polymer industry, paints, wood
Stabilizers (antioxydants, antiozonants, etc.)
Technology of polymers
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Summary:Efficiencies of stabilisation of ten metal-containing phenolic antioxidants were measured in isotactic polypropylene. The influence of physical behaviour (mobility, volatility, solubility) on the efficiency of stabilisation was investigated. All the antioxidants examined contained the same hindered phenol moiety but the type of aliphatic chain in the para position and the type of metal ion present in the molecule were different. Efficiency of stabilisation, diffusion coefficients, solubility in polymer and resistance to extraction liquids such as aqueous solution of detergent, ethanol, acetic acid and n-heptane were investigated as a function of the molecular structure and the type of metal ion (Ca, Ni, Zn, Sn).
ISSN:0141-3910
1873-2321
DOI:10.1016/0141-3910(90)90013-W