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Structural transitions in liquid crystalline solutions of some cellulose derivatives

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Fibre Chemistry Aims and scope

Abstract

It was found that the domains of the mesophase of the investigated systems have cylindrical symmetry and a different direction of the maximum polarizability: for ethylcellulose and cellulose diacetate, the polarizability is directed along the axis of the cylinder, while it is at an angle of 45‡ for hydroxypropylcellulose. Formation of liquid-crystalline spherulites in the thermotropic transition of isotropic solutions of ethylcellulose in formic acid to the mesophase was demonstrated. In the liquid crystal—isotropic liquid phase transition, a characteristic extreme of the intensity of light scattering is observed near the region of melting of the liquid crystalline matrix, so that this method can be used for identifying the region of the existence of a two-phase “corridor”.

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Authors and Affiliations

  1. International Scientific Center for Evaluation of Effects on the Environment, Moscow State University of Applied Biotechnology, Russia

    N. A. Savchenko, O. A. Khanchich, A. K. Dibrova & V. E. Gul'

Authors
  1. N. A. Savchenko
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  2. O. A. Khanchich
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  3. A. K. Dibrova
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  4. V. E. Gul'
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Additional information

Translated from Khimicheskie Volokna, No. 5, pp. 25–27, September–October, 1997.

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Savchenko, N.A., Khanchich, O.A., Dibrova, A.K. et al. Structural transitions in liquid crystalline solutions of some cellulose derivatives. Fibre Chem 29, 298–301 (1997). https://doi.org/10.1007/BF02408152

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  • DOI: https://doi.org/10.1007/BF02408152

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