Dielectric properties of side chain liquid crystalline elastomers: influence of crosslinking on side chain dynamics |
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| Authors: | J.J. Zanna H.T. Nguyen J.P. Parneix G. Ruffié M. Mauzac |
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| Affiliation: | (1) CRPP, CNRS, Université Bordeaux 1, avenue du Dr. Schweitzer, 33600 Pessac, France, FR;(2) PIOM (CNRS UMR 5501), ENSCPB, avenue Pey Berland, 33405 Talence Cedex, France, FR;(3) IMRCP (CNRS UMR 5623), Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 4, France, FR |
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| Abstract: | Dielectric response, from 1 Hz to 10 MHz, of liquid crystalline side chain elastomers has been compared to the one of analogous uncrosslinked materials. Results are discussed in terms of mobility of the mesogens. Two different systems have been investigated: smectic A elastomers allow to determine the influence of crosslinking on the relaxation (i.e. the reorientation of the whole mesogen around the chain), a S C * elastomer shows the drastic influence of the polymer network on the Goldstone mode. Received 12 October 1998 |
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| Keywords: | PACS. 61.30.v Liquid crystals - 61.41.+e Polymers, elastomers, and plastics - 77.84.Nh Liquids, emulsions, and suspensions liquid crystals |
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