We investigate the rheological properties of polydomain smectic A Side-Chain Liquid Crystalline Elastomers (SCLCE) by dynamic shear and compression measurements and find a very similar behavior for both experiments. We show that the dynamic shear modulus G ′ is independent of a precompression applied to the sample. In addition, we present the first dynamic measurements of the anisotropy of G ′ observed for the corresponding Liquid Single Crystal Elastomers (LSCE). We find that these monodomains show dynamically a dramatic difference depending on whether the shear is in a plane parallel or perpendicular to the layer normal, demonstrating the in-plane fluidity of the smectic layering.
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Weilepp et al. (1999) studied this question.
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