Stress softening in natural rubber vulcanizates. Part II. Stress softening effects in pure gum and filler loaded rubbers
Article first published online: 9 MAR 2003
Copyright © 1965 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 9, Issue 9, pages 3011–3021, September 1965
How to Cite
Harwood, J. A. C., Mullins, L. and Payne, A. R. (1965), Stress softening in natural rubber vulcanizates. Part II. Stress softening effects in pure gum and filler loaded rubbers. J. Appl. Polym. Sci., 9: 3011–3021. doi: 10.1002/app.1965.070090907
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Received: 9 APR 1965
Considerable stress softening (Mullins effect) occurs in both gum and filler loaded vulcanizates of natural rubber and SBR. When compared at the same stress, the extent of softening is similar in both gum and filled vulcanizates. The stress softening is shown to be mainly due to changes in the rubber phase in the filled vulcanizate, and related to that of the gum vulcanizate by the use of the strain-amplification factor discussed in Part I of this series.