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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2013, 3, 53—62.
Polymer-Dispersed Liquid Crystals Doped with Carbon Nanofibers
G. M. Zharkova1, S. A. Strel'tsov1, O. Yu. Podyacheva2, R. I. Kvon2, Z. R. Ismagilov3
Author affiliations 1Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Institutskaya str., 4/1, Novosibirsk, 630090, Russia. E-mail: Zharkova@itam.nsc.ru 2Boreskov Institute of Catalysis SB RAS
pr. Lavrentieva 5, Novosibirsk, Russia, 630090. E-mail : firstname.lastname@example.org 3Institute of Coal Chemistry and Material SB RAS
Russia, 650000, Kemerovo, Sovetskiy Pr., 18. E-mail : email@example.com
Abstract Properties of polymer-dispersed liquid crystals doped with carbon nanofibers and formed by the method of phase separation during solvent evaporation are studied. The initial mixture consisted of polyvinyl acetate, nematic liquid crystal (5[CB]) and carbon nanofibers. Different methods of carbon nanofiber modification (mechanical and physicochemical) are examined. It was found that the combination of different modification methods enables to increase the content of carbon nanoparticles in polymer-dispersed liquid crystals up to 0,1 wt. %. Introduction of carbon nanoparticles in an amount up to 0,1 wt. % does not affect the droplet size of liquid crystal but leads to a small increase of the liquid crystal – isotropic liquid phase transition temperature. Carbon nanofibers modified by acid treatment reduce the critical field of reorientation and the optical response time of polymer-dispersed liquid crystals.