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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., 2017, 17 (4), 97—105.
DOI: 10.18083/LCAppl.2017.4.97

Properties of Nanocrystalline Cellulose Obtained From Celluloses of Annual Plants

M. I. Voronova1, O. V. Surov1, N. V. Rubleva1, N. E. Kochkina1, S. M. Prusova1, Yu. A. Gismatulina2, V. V. Budaeva2, A. G. Zakharov1

Author affiliations
1G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences,
1 Akademicheskaya St., Ivanovo, 153045, Russia
2Institute for Problems of Chemical and Energetic Technologies of the Siberian Branch of the RAS,
1 Socialisticheskaya St., Biysk, 659322, Russia

Nanocrystalline cellulose (CNC) was obtained by sulfuric acid hydrolysis from celluloses of annual plants: miscanthus, flax straw, hemp, Jerusalem artichoke, jute and flax. Properties of CNC suspensions and films were studied using transmission electron microscopy, polarizing optical microscopy, IR spectroscopy, dynamic light scattering, X-ray diffraction and elemental analysis. Nanoscale CNC particles have a pronounced anisotropic rod-like shape. High colloidal stability of CNC aqueous suspensions is determined by a high negative surface charge of CNC particles. CNC films exhibit birefringence and display "fingerprints" textures, which are characteristic of chiral nematic structures.

Keywords: nanocrystalline cellulose, chiral nematic structure

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