中国物理B ›› 2008, Vol. 17 ›› Issue (9): 3227-3235.doi: 10.1088/1674-1056/17/9/014
宋静1, 刘永刚2, 宣丽2, 郑致刚3, 张伶莉3, 郭福忠3, 李文萃3, 邓舒鹏3, 马骥4
Zheng Zhi-Gang(郑致刚)a)b), Song Jing(宋静)c), Zhang Ling-Li(张伶莉)a)b), Liu Yong-Gang(刘永刚)a), Guo Fu-Zhong(郭福忠)a)b), Ma Ji(马骥)d), Li Wen-Cui(李文萃)a)b), Deng Shu-Peng(邓舒鹏)a)b), and Xuan Li(宣丽)a)†
摘要: This paper investigates the monomer kinetics of polymer dispersed liquid crystal (PDLC) grating. Fourier transform infrared (FTIR) spectra are used in the studies of photoreaction kinetics. The results indicate that there is a relative stable stage arises after a very short initial stage. Based on FTIR studies, the monomer diffusion equation is deduced and necessary numerical simulations are carried out to analyse the monomer conversion which is an important point to improve phase separation structure of PDLC grating. Some simulation results have a good agreement with experimental data. In addition, the effects induced by monomer diffusion constant $D$ and diffusion--polymerization-ratio rate $R$ are discussed. Results show that monomer conversion can be improved by increasing value of $D$. Besides, a good equilibrium state ($R=1$) is more beneficial to the diffusion of monomer which is important in the process of phase separation.
中图分类号: (Holographic optical elements; holographic gratings)