Effects of the fluorinated liquid crystal molecules on the electro-optical properties of polymer dispersed liquid crystal films |
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| Authors: | Huimin Zhang Hui Cao Mei Chen Lanying Zhang Tianmeng Jiang Haiguang Chen |
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| Affiliation: | 1. Department of materials, University of Science and Technology Beijing, Beijing, P. R. China;2. Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. China;3. Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, P.R. China;4. Beijing Key Laboratory of Liquid Crystal Materials Analysis and Application Technology, Beijing Bayi Space Liquid Crystal Material Technology Company, Beijing, P. R. China |
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| Abstract: | The different fluorinated liquid crystal (LC) molecules doped to E8 were used as LC component to prepare polymer dispersed liquid crystal (PDLC) films. The mass fraction of the LC mixture is fixed 50.0 wt%. Results indicate that doping 8.0 wt% fluorinated LC molecule ME3CP to E8 significantly reduced the driving voltage of the PDLC films, and the driving voltage reduced with the rise of mass fraction of ME3CP. Besides, the terminal flexible chain length of the fluorinated LC molecule influenced the LC mixture properties based on E8, such as the dielectric anisotropy, birefringence and viscosity of the LC mixture, and the morphology and the electro-optical properties of PDLC films were controlled not only by the physical properties of the LC mixture, but also by the terminal flexible chain length of the fluorinated LC molecule . |
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| Keywords: | Fluorinated liquid crystal molecule physical properties polymer dispersed liquid crystal polymer network electro-optical properties |
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