Oxidative aging of natural rubber vulcanizates. Part I. The scission of peroxide vulcanizates
Article first published online: 9 MAR 2003
Copyright © 1967 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 11, Issue 7, pages 1289–1297, July 1967
How to Cite
Bell, C. L. M. and Tiller, R. (1967), Oxidative aging of natural rubber vulcanizates. Part I. The scission of peroxide vulcanizates. J. Appl. Polym. Sci., 11: 1289–1297. doi: 10.1002/app.1967.070110725
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Received: 21 DEC 1966
A new method has been developed for measuring the number of molecules of oxygen required (ϵ) to cause a main chain scission in peroxide vulcanizates of natural rubber. This method is based on experimentally derived relationships and is not dependent on statistical theories of rubber elasticity. The value ϵ is only slightly temperature dependent, ranging from 28 at 65°C. to 22 at 100°C. The effects of several types of antioxidant have been examined, in all cases ϵ was greatly reduced. The effect of antioxidant 2246 has been studied in more detail and the results indicate that there is a high probability of scission occurring at the termination step in the oxidation chain.