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Phys. Rev. Lett. 98, 075502 (2007) [4 pages]

Thermal Fluctuations and Rubber Elasticity

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Xiangjun Xing1,*, Paul M. Goldbart2, and Leo Radzihovsky3
1Department of Physics, Syracuse University, Syracuse, New York 13244, USA
2Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080, USA
3Department of Physics, University of Colorado, Boulder, Colorado 80309, USA

See Also: Publisher's Note

Received 21 September 2006; published 13 February 2007; publisher error corrected 13 February 2007

See accompanying Physics Focus

The effects of thermal elastic fluctuations in rubbery materials are examined. It is shown that, due to their interplay with the incompressibility constraint, these fluctuations qualitatively modify the large-deformation stress-strain relation, compared to that of classical rubber elasticity. To leading order, this mechanism provides a simple and generic explanation for the peak structure of Mooney-Rivlin stress-strain relation and shows good agreement with experiments. It also leads to the prediction of a phonon correlation function that depends on the external deformation.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.075502
DOI:
10.1103/PhysRevLett.98.075502
PACS:
62.20.Dc, 61.41.+e

*Electronic address: xxing@physics.syr.edu

See Also

Publisher's Note: Xiangjun Xing, Paul M. Goldbart, and Leo Radzihovsky, Publisher’s Note: Thermal Fluctuations and Rubber Elasticity [Phys. Rev. Lett. 98, 075502 (2007)], Phys. Rev. Lett. 98, 089903 (2007).

 
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