Polydomain–Monodomain Orientational Process in Smectic-C Main-Chain Liquid-Crystalline Elastomers

Authors

  • Antoni Sánchez-Ferrer,

    Corresponding author
    1. Food & Soft Materials Science Group, Institute of Food, Nutrition & Health, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland
    2. Albert Ludwigs University, Institute for Macromolecular Chemistry, Stefan-Meier-Str. 31, 79104 Freiburg, Germany
    • Food & Soft Materials Science Group, Institute of Food, Nutrition & Health, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland, Fax: +41 44 632 1603.
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  • Heino Finkelmann

    1. Albert Ludwigs University, Institute for Macromolecular Chemistry, Stefan-Meier-Str. 31, 79104 Freiburg, Germany
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Abstract

The polydomain–monodomain (PM) transformation takes place when a polydomain of a smectic-C main-chain liquid-crystalline elastomer (SmC MCLCE) is uniaxially stretched. We present results based on a combination of mechanical and X-ray experiments which show how the domains initially rearrange to finally form a perfect conical layer distribution (monodomain) when the sample is fully stretched. The rearrangement and orientational process of the domains is quantified and compared to the parallel and perpendicular uniaxial stress–strain deformations of a monodomain sample. The stress–strain behaviour of the polydomain lays between the uniaxial deformations, parallel and perpendicular to the director, of the monodomain sample.

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