制備條件對反式聚合物穩定膽甾相織構膜電光性能的影響

Effects of preparing conditions on the electro-optical properties of reverse-mode polymer-stabilized cholesteric texture films

摘要: 選用1,4-雙4-(6-丙烯酰氧基己氧基)苯甲酰氧基-2-甲苯(C6M)/(S)-4'-(2-甲基丁基)-4-聯苯腈(CB15)/安息香二甲醚(IRG651)/SLC1717復合體系,通過紫外光聚合誘導相分離法制備了反式聚合物穩定膽甾相織構(R-PSCT)膜.研究了聚合溫度和紫外光輻照度對所制備的R-PSCT膜電光性能的影響.隨著聚合溫度的升高或紫外光輻照度的減小,R-PSCT膜的驅動電壓、對比度和開態響應時間減小,而關態響應時間增大.在聚合溫度為293 K和紫外光輻照度為0.75 m W·cm^-2時,所制備的R-PSCT膜具有較佳的電光性能.

Abstract: Reverse-mode polymer-stabilized cholesteric texture (R-PSCT) films were prepared from ultraviolet polymerization-induced phase separation in a mixture of 1,4-di4-(6-acryloyloxyhexyloxy) benzoyloxy -2-methylbenzene (C6M)/(S)-4'-(2-methyl-butyl) biphenyl-4-earbonitrile (CB15)/2,2-dimethopxy-1,2-diphenyl-ethanone (IRC,651)/SLC 1717. The effects of curing temperature and ultraviolet (UV) irradiance on the electro-optical properties of R-PSCT films were studied. When the curing temperature increases or the ultraviolet irradianee decreases, the driving voltage, the contrast ratio and the on-state response time decrease, but the off-state response time increases. The R-PSCT film prepared at a curing temperature of 293 K and an ultraviolet irradiance of 0.75 mW·cm^-2 has better electro-optical properties.