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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., 2012, 4, 81—85.

Structural Transition in Isotropic Phase of Smectic Polyacrylate

S. G. Polushin1, V. B. Rogozhin1, A. V. Zakhryapa1, 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) in the melt of a comb-like polymer with acrylate main chain and mesogenic cyanobiphenyl side groups was investigated above smectic – isotropic phase transition temperature. It was revealed that the Kerr constant temperature dependence changes abruptly owing to changes in short-range orientation order at isotropic – isotropic phase transitions.

Keywords: Kerr effect, isotropic phase, comb-like polymer, smectic

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