Retardation of polymer oxidation by natural antioxidant gossypol. II: Abnormal effects of sulphide and other additives

The effects of dilauryl thiodipropionate, heptadecane, and phenyl benzoate on polypropylene oxidation in the presence of gossypol have been studied. It has been demonstrated that dilauryl thiodipropionate increases the antioxidant effectiveness of gossypol, provided the latter is used in small conce...

Full description

Saved in:
Bibliographic Details
Published in:Polymer degradation and stability 1992, Vol.35 (3), p.229-233
Main Authors: MAR'IN, A. P, SHLYAPNIKOV, Y. A, MAMETOV, E. S, DZHALILOV, A. T
Format: Article
Language:English
Subjects:
Applied sciences
Chemical reactions and properties
Degradation
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effects of dilauryl thiodipropionate, heptadecane, and phenyl benzoate on polypropylene oxidation in the presence of gossypol have been studied. It has been demonstrated that dilauryl thiodipropionate increases the antioxidant effectiveness of gossypol, provided the latter is used in small concentrations. If gossypol is used in high concentrations, its effectiveness is reduced by sulphide. In this case the curves of the dependence of induction period or of oxygen consumption rate on sulphide concentration will show both maxima and minima. It is supposed that these additives exert similar effects on the polymer structure and on the antioxidant distribution in the polymer.
ISSN:0141-3910
1873-2321