Dynamic soft elasticity in monodomain nematic elastomers

A. Hotta, E. M. Terentjev

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Abstract

We study the linear dynamic-mechanical response of monodomain nematic liquid crystalline elastomers under shear in the geometry that allows the director rotation. The aspects of time-temperature superposition are discussed at some length and Master Curves are obtained between the glassy state and the nematic transition temperature Tni. However, the time-temperature superposition did not work through the clearing point Tni, due to the transition from the "soft-elasticity" nematic regime to the ordinary isotropie rubber response. We focus on the low-frequency region of the Master Curves and establish the power law dependence of the modulus G′ wa. This law agrees very well with the results of static stress relaxation, where each relaxation curve obeys the analogous power law G′ t-a in the corresponding region of long times and temperatures.

Original languageEnglish
Pages (from-to)291-301
Number of pages11
JournalEuropean Physical Journal E
Volume10
Issue number4
DOIs
Publication statusPublished - 2003 Apr 1

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ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Chemistry(all)
  • Materials Science(all)
  • Surfaces and Interfaces

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