Oxidative aging of natural rubber vulcanizates. Part II. Effect of vulcanizate structure
Article first published online: 9 MAR 2003
Copyright © 1967 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 11, Issue 11, pages 2201–2214, November 1967
How to Cite
Bell, C. L. M. and Cunneen, J. I. (1967), Oxidative aging of natural rubber vulcanizates. Part II. Effect of vulcanizate structure. J. Appl. Polym. Sci., 11: 2201–2214. doi: 10.1002/app.1967.070111110
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Received: 10 MAR 1967
The oxidation characteristics of protected and unprotected vulcanizates from natural rubber have been examined. With unpurified rubber (RSS1) in the presence or absence of added antioxidants the rate of oxidation of the vulcanizates is: unaccelerated sulfur > accelerated sulfur > TMTD sulfurless or EV > peroxide. This order is obtained because the sulfur compounds present in the sulfurated vulcanizates are antagonistic towards both natural and added antioxidants. The antagonism is greatest with polysulfides, and when they are present they dominate the aging behavior of vulcanizates.