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HIGH TEMPERATURE FORMATION OF POLYMER – DISPERSED HYDROGEN BONDED LIQUID CRYSTALS

T. Angelov1,* , B. Katranchev2, M. Petrov2

Affiliation

  1. Laboratory “Biomolecular Layers”, Institute of Solid State Physics, Bulgarian Academy of Sciences, 72, Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
  2. Laboratory “Optics and Spectroscopy”, Institute of Solid State Physics, Bulgarian Academy of Sciences, 72, Tzarigradsko Chaussee Blvd, 1784 Sofia, Bulgaria

Abstract

High temperature formation of polymer-dispersed liquid crystals using the mixture, photo- pre-polymer NOA65/ 4-(octyloxy)benzoic acid/surfactant, was used. By polarization micro textural analysis, we have observed, in the pre-polymer/liquid crystal mixture, droplets, which seems to be bifocal. These bifocal droplets indicate a twist of the optical axis as a result of temperature variation, and are fixed by photo-polymerization. A mechanism for the possible chiralization in the bifocal drops is suggested..

Keywords

Polymers, Liquid crystals, Hydrogen bond.

Submitted at: Dec. 9, 2004
Accepted at: Jan. 26, 2005

Citation

T. Angelov, B. Katranchev, M. Petrov, HIGH TEMPERATURE FORMATION OF POLYMER – DISPERSED HYDROGEN BONDED LIQUID CRYSTALS, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 1, pp. 281-284 (2005)