Thermal stability of additivated isotactic polypropylene

SummaryIsotactic polypropylene stabilised with fullerene [C60], its adduct with methyl levopimarate, carbon black, p-t-butylcalix[4]arene, p-t-butylcalix[6]arene, Irganox 1076 or Topanol OC was investigated by means of oxygen uptake method under isothermal (165°C) and isobaric (normal pressure) cond...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2002-12, Vol.49 (4), p.289-296
Main Authors: ZAHARESCU, Traian, JIPA, Silviu, SETNESCU, Radu, SANTOS, Célia, GIGANTE, Barbara, MIHALCEA, Ion, PODINA, Cornel, GORGHIU, Laura-Monica
Format: Article
Language:English
Subjects:
Applied sciences
Carbon black
Compounding ingredients
Exact sciences and technology
Fillers and reinforcing agents
Fullerenes
Gamma irradiation
Isotacticity
Oxidation rate
Oxygen consumption
Polymer industry, paints, wood
Polypropylene
Technology of polymers
Thermal stability
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Summary:SummaryIsotactic polypropylene stabilised with fullerene [C60], its adduct with methyl levopimarate, carbon black, p-t-butylcalix[4]arene, p-t-butylcalix[6]arene, Irganox 1076 or Topanol OC was investigated by means of oxygen uptake method under isothermal (165°C) and isobaric (normal pressure) conditions. Oxidation investigations were performed in air as degradation environment. Additive concentration was 0.25 % (w/w). Kinetic parameters, oxidation induction and oxidation rate are compared with similar characteristics of additive-free i-PP. Effect of γ-irradiation on thermal oxidation is also presented. Three γ-exposure doses (50, 100 and 150 kGy) were selected. The influence of radiation treatment on the efficiency of studied compounds and some mechanistic aspects are also presented.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-002-0098-8