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Liquid Crystals and their Application
Russian Journal

Zhidkie kristally i ikh prakticheskoe ispol'zovanie

Жидкие кристаллы и их практическое использование

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Rus Eng


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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2013, 1, 36—42.

Orientational Dynamics of Isotropic Melt of Smectic Comb-Like Polymer

S. G. Polushin1, V. B. Rogozhin1, A. V. Zakhryapa1, T. S. Fiskevich1, E. I. Rjumtsev1, N. I. Boiko2

Author affiliations
1Saint Petersburg State University, Physical Faculty
198504 St. Petersburg, Petrodvorets, Ul’yanovskaya str., 1. 
2Lomonosov Moscow State University, Chemical Faculty
119991 Moscow, Leninskie Gory, 1

The electric birefringence (Kerr effect) dynamics in the melt of a comb-like polymer with an acrylate main chain and mesogenic cyanobiphenyl side groups was investigated above smectic – isotropic phase transition temperature. For the first time it was found that in smectic phase the temperature dependence of relaxation times had no classic character and the presence of the of relaxation times spectrum was established.

Keywords: Kerr effect, relaxation time, comb-like polymer

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