| Title | Double UV polymerisation with variable temperature-controllable selective reflection of polymer-stabilised liquid crystal (PSLC) composites |
| Authors | Xiao, Ling Cao, Hui Sun, Jian Wang, Huihui Wang, Dong Yang, Zhou He, Wanli Xiao, Jiumei Ding, Hangjun Yang, Huai |
| Affiliation | Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing Key Lab Funct Mat Mol & Struct Construct, Beijing, Peoples R China. Univ Sci & Technol Beijing, Sch Math & Phys, Beijing, Peoples R China. Peking Univ, Coll Engn, Beijing, Peoples R China. Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing Key Lab Funct Mat Mol & Struct Construct, Beijing, Peoples R China. Yang, H (reprint author), Peking Univ, Coll Engn, Beijing, Peoples R China. |
| Keywords | Liquid crystal selective reflection UV-radical polymerisation UV-cationic polymerisation non-uniform pitch distribution ELECTROOPTICAL PROPERTIES CHOLESTERIC TEXTURE LIGHT-REFLECTION BAND REFLECTION FILMS POLARIZERS PERFORMANCE DIFFUSION COATINGS |
| Issue Date | 2016 |
| Publisher | LIQUID CRYSTALS |
| Citation | LIQUID CRYSTALS.2016,43(10),1299-1306. |
| Abstract | In this study, a method of preparing wide-band reflection cholesteric liquid crystals (CLCs) films by UV-radical polymerisation in combination with UV-cationic polymerisation is proposed. Because the helical twisting power (HTP) of the chiral dopant decreases with increasing temperature and the polymerisation rate of UV-initiated free radical polymerisation is faster than UV-initiated cationic polymerisation, by adjusting the temperature, broadband reflective films with non-uniform pitch distribution are obtained. The fractured surface of the polymer network of the broadband reflective films is observed by scanning electron microscopy (SEM), which reveals the presence of non-uniform pitch distribution. In addition, the influences of monomer concentration, UV light intensity and UV curing time on the consequent non-uniform pitch distribution have been studied. [GRAPHICS] |
| URI | http://hdl.handle.net/20.500.11897/492486 |
| ISSN | 0267-8292 |
| DOI | 10.1080/02678292.2016.1172351 |
| Indexed | SCI(E) |
| Appears in Collections: | 工学院 |
