| Issue |
Europhys. Lett.
Volume 76, Number 2, October 2006
|
|
|---|---|---|
| Page(s) | 278 - 284 | |
| Section | Condensed matter: structural, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2006-10256-8 | |
| Published online | 08 September 2006 | |
Spectral hole burning to probe the nature of unjamming (Payne effect) in particle-filled elastomers
Applied Physics Research Group, Bridgestone Americas, Center for Research and Technology - 1200 Firestone Parkway, Akron, OH 44317-0001, USA
Received:
6
June
2006
Accepted:
21
August
2006
The Payne effect is a low-strain hysteretic softening in particle-filled elastomers which we recognize as part of jamming physics. We find that aging at a fixed oscillatory strain produces a hole in the unjamming loss modulus spectrum which is localized near the aging strain for a silica-filled elastomer. This cannot be predicted by any existing Payne effect model. By applying the Einstein fluctuation-dissipation relation and comparing our findings to nonequilibrium glassy behavior, we show that oscillatory strain amplitude in particle-filled elastomers can be interpreted as an effective temperature.
PACS: 64.70.Dv – Solid-liquid transitions / 81.05.Qk – Reinforced polymers and polymer-based composites / 83.80.Hj – Suspensions, dispersions, pastes, slurries, colloids
© EDP Sciences, 2006
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