Influence of SMA content on the electro-optical properties of polymer-dispersed liquid crystal prepared by monodisperse poly(MMA-co-SMA)/LC microcapsules
| Autor: | Jee-Hyun Ryu, Sung-Guk Lee, Jeong-Beom Nam, Kyung-Do Suh |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Dispersion polymerization
chemistry.chemical_classification Materials science genetic structures Polymers and Plastics Organic Chemistry Dispersity General Physics and Astronomy Polymer Methacrylate eye diseases Contact angle chemistry.chemical_compound chemistry Chemical engineering Liquid crystal Polymer chemistry Materials Chemistry sense organs Methyl methacrylate Alkyl |
| Zdroj: | European Polymer Journal. 43:2127-2134 |
| ISSN: | 0014-3057 |
| Popis: | Monodisperse poly(methyl methacrylate) (PMMA) particles containing various concentrations of stearyl methacrylate (SMA) were prepared, and a liquid crystal (LC) was swollen into the particles using a solute co-diffusion method (SCM). Phase separation behaviors between the polymer and LC were monitored by utilizing an optical and a polarized microscope (OM/POM). The monodisperse LC microcapsules were then applied to a polymer-dispersed liquid crystal (PDLC), and the electro-optical properties were investigated. As a result, the threshold and driving voltages were improved when the SMA content increased. The long alkyl chains of SMA in the capsules should exist at the interface of the LC and polymer resulting in an enhancement of phase separation between the polymer and LC, which largely influences the electro-optical properties of PDLC. |
| Databáze: | OpenAIRE |
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