The effect of IR radiation on structurization of butadiene-nitrile rubber

The accelerated aging of butadiene-nitrile rubber (NBR) induced by IR radiation is studied. At 100°C, intensive aging (the formation of imide and anhydride crosslinks) of NBR is observed in air and argon. The activity of aging under IR radiation is significantly higher than the heat aging. The IR ra...

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Bibliographic Details
Published in:Polymer science. Series A, Chemistry, physics Chemistry, physics, 2010-08, Vol.52 (8), p.787-793
Main Authors: Karpacheva, G. P., Litmanovich, A. D., Bondarenko, G. N., Zemtsov, L. M., Krentsel’, L. B.
Format: Article
Language:English
Subjects:
Aging (artificial)
Aging (natural)
Anhydrides
Chemistry
Chemistry and Materials Science
Fluctuation
Imides
Infrared radiation
Polymer Sciences
Rubber
Structure and Properties
Transformations
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Summary:The accelerated aging of butadiene-nitrile rubber (NBR) induced by IR radiation is studied. At 100°C, intensive aging (the formation of imide and anhydride crosslinks) of NBR is observed in air and argon. The activity of aging under IR radiation is significantly higher than the heat aging. The IR radiation selectively activates nitrile groups without any chemical transformation in butadiene units of the rubber. On the basis of the data obtained, it is suggested that the use of IR radiation makes it possible to model processes occurring as a result of local temperature fluctuations during prolonged natural aging of NBR. Thus, the accelerated aging induced by IR irradiation at 100°C can be recommended as an effective method for estimating structural instability of NBR during storage.
ISSN:0965-545X
1555-6107
DOI:10.1134/S0965545X10080031