Effects of crosslinking agent/diluents/thiol on morphology of the polymer matrix and electro-optical properties of polymer-dispersed liquid crystal |
| |
| Authors: | Yi Zhang Le Zhou Jie Yang Jiazhen Zhang Mingtan Hai Lanying Zhang |
| |
| Affiliation: | 1. Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of China;2. Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, People’s Republic of China;3. The Experimental High School Attached To Beijing Normal University, Beijing, People’s Republic of China |
| |
| Abstract: | To study effects of the crosslinking agent/diluents/thiol on morphology of the polymer matrix and the electro-optical properties of polymer-dispersed liquid crystal (PDLC) films, samples were prepared by ultraviolet (UV)-initiated polymerisation. Due to the interaction between thiol–acrylate reaction and acrylate monomers polymerisation, the sample compositions were the foremost determinant to the microstructures which in turn played an essential role on the electro-optical properties of the PDLC films. With the increasing content of the crosslinking agent, the LC droplet size decreased, while the thiol had a contrary effect on the LC droplet size. It was demonstrated that the superior properties of the low-driven voltage (37.2 V), the high contrast ratio (148.2), the short response time (14.9 ms) and the high saturation transmittance (86.6%) could benefit from a novel microstructure which had a dense surface and meshes with microspheres attached. It was of great significance for the optimisation and the potential applications of the PDLC films. |
| |
| Keywords: | Polymer-dispersed liquid crystal ultraviolet-initiated polymerisation thiol–acrylate electro-optical properties |
|
|
