Journal article
Phase behaviour and electro-optic characteristics of a polymer stabilized ferroelectric liquid crystal
Liquid crystals, Vol.19(6), pp.719-727
12/01/1995
DOI: 10.1080/02678299508031091
Abstract
The effects of adding a diacrylate monomer or its polymerized network to a ferroelectric liquid crystal have been characterized. The monomer lowers the temperatures of transition to the more ordered phases, whereas the polymer network phase separates into polymer rich and LC rich phases and has little effect on the LC phase behaviour. Ferroelectric polarization decreases comparably in both monomer and networked systems. As the network concentration increases, the size of LC domains decreases considerably. With low concentrations of polymer and, thus large LC domains, optical response and tilt angle remain fairly independent of polymer concentration, but as the polymer concentration increases, switching speed and tilt angle decrease dramatically. Polymerization rate maxima increase with monomer concentration until saturation of monomer in the liquid crystal is reached. The rate maxima then decrease as monomer must diffuse from monomer rich droplets. Double bond conversion during the polymerization is comparable for all monomer concentrations below 50 per cent.
Details
- Title: Subtitle
- Phase behaviour and electro-optic characteristics of a polymer stabilized ferroelectric liquid crystal
- Creators
- C. Allan Guymon - Department of Chemical Engineering , University of ColoradoErik N Hogga - Department of Chemical Engineering , University of ColoradoDavid M Walba - Department of Chemistry , University of ColoradoNoel A Clark - Department of Physics , University of ColoradoChristopher N Bowman - Department of Chemical Engineering , University of Colorado
- Resource Type
- Journal article
- Publication Details
- Liquid crystals, Vol.19(6), pp.719-727
- Publisher
- Taylor & Francis Group
- DOI
- 10.1080/02678299508031091
- ISSN
- 0267-8292
- eISSN
- 1366-5855
- Language
- English
- Date published
- 12/01/1995
- Academic Unit
- Chemical and Biochemical Engineering
- Record Identifier
- 9984004082102771
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