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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., 2018, 18 (1), 47—54.
DOI: 10.18083/LCAppl.2018.1.47

Influence of Pulsed Electromagnetic Fields on Positional and Orientational Ordering in Aqueous Solutions of Cetyltrimethylammonium Bromide (CTAB)

М. N. Shipko1,2, N. V. Usol'tseva1, А. L. Sibirev2, О. М. Мaslennikova2, А. I. Smirnova1, М. А. Stepovich4, G. F. Gabdulsadykova5

Author affiliations
1Nanomaterials Research Institute, Ivanovo State University,
39 Ermak St., Ivanovo, 153025, Russia
2Ivanovo State Power Engineering University,
34 Rabfakovskaya St., Ivanovo, 153003, Russia
3Central State Medical Academy by the Administration of the President of the Russian Federation,
19 Marshal Timoshenko St., bld. 1, Moscow, 121359, Russia
4Kaluga State University,
26 Stepan Razin St., Kaluga, 248023, Russia
5Ivanovo State Medical Academy,
8 Sheremetevsky Ave, Ivanovo, 153012, Russia

The influence of electromagnetic field pulses on the positional order of associates (micelles) in aqueous solutions of cetyltrimethylammonium bromide (CTAB) with a concentration of 0,14 ÷ 54,88 × 10–3 M was investigated. The method of gas-discharge visualization (GDV) has been used to study their positional order for the first time. The method provides obtaining of stereographic projections of electron emission patterns from solution. The obtained pictures of gas-discharge glow of solutions allowed to establish the existence of planes with the closest packing of micelles, their spatial orientation, and as a consequence, a symmetry class of the structure formed in solution was also determined. The sequence of structural transformations in solution after exposure to magnetic field pulses at various CTAB concentrations was studied.

Keywords: cetyltrimethylammonium bromide, gas-discharge glow, electron emission, positional order, micelles

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