Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (7): 1473.

• Articles • Previous Articles    

Investigation on the Photo-polymerization of PDLC

WANG Hao-Ming1, RUAN Sheng-Ping1, PENG Zeng-Hui3, WU Feng-Qing2, DONG Wei1, ZHANG Xin-Dong1, XUAN Li3, LIU Cai-Xia1*   

  1. 1. College of Electronic Science and Engineering,
    2. College of Chemistry, Jilin University, Changchun 130012, China;
    3. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • Received:2008-09-28 Online:2009-07-10 Published:2009-07-10
  • Contact: LIU Cai-Xia. E-mail: liucaixia@email.jlu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 60877041, 60374048)和吉林省科技发展计划项目资助.

Abstract:

Polymer dispersed liquid crystal(PDLC) has extensive applications in non-linear optical material, displays and optical attenuation devices. In this paper, Ar+ laser was used as radiation source and Rose Bengal, N-phenyl glycine(NPG), dipentaerythrol hydrixy penta actylate, 1-viny-2-pyrrolidone were applied as photoinitiator, coinitiator, pre-polymer, thinner respectively to prepare PDLC with liquid crystal TEB30A. Ultraviolet spectra and spectrofluorimetry were applied to analyze the mechanism of the photo-polymerization reaction. The result indicates that by absorbing the photo energy, the initiator interacts with NPG to produce free radical, which induces the polymerization to produce the phase separation between the pre-polymer and the liquid crystal.

Key words: Liquid crystal; Photo-polymerization; Polymer dispersed liquid crystal

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