Effect of the metal atom on the antioxidative activity of metal-containing dialkyldithiophosphates

The oxidation of ethylbenzene in air at 333 K in a chemiluminescent apparatus and in the presence of metal-containing diisopropyldithiophosphates (MeDPD), AIBN and 9,10-dibromanthracene has been carried out. The possibility that some of the MeDPDs might be quenchers of excited states and thus influe...

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Bibliographic Details
Published in:Polymer degradation and stability 1989, Vol.24 (4), p.381-387
Main Authors: Ivanov, Sl.K., Kateva, J.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Model compounds
Organic polymers
Physicochemistry of polymers
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Summary:The oxidation of ethylbenzene in air at 333 K in a chemiluminescent apparatus and in the presence of metal-containing diisopropyldithiophosphates (MeDPD), AIBN and 9,10-dibromanthracene has been carried out. The possibility that some of the MeDPDs might be quenchers of excited states and thus influence the rate of initiation of the oxidation was investigated. A considerable effect of the metal atom (Zn, Cu, Ni, Co, Fe, Mn) on the rate constant of interaction between MeDPD (inhibitor) and the peroxy radicals was observed.
ISSN:0141-3910
1873-2321
DOI:10.1016/0141-3910(89)90049-9