Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (11): 2326.

• Articles • Previous Articles    

Photochromic Properties of Spirooxazine Compound in Acrylic Polyurethane Lacquer Film

WANG Li-Yan1,2, ZHANG Guo1*, LIU Xiu-Qi1, ZHANG Hai-Quan3, XIAO Li-Guang2, YU Huan-Yang2, ZHANG Chun-Yu2, LIU Na4   

  1. 1. Key Laboratory of Automobile Materials of Ministry of Education, Jilin University, Changchun 130012, China;
    2. College of Material Science and Engineering, Jilin Architectural and Civil Engineering Institute, Changchun 130021, China;
    3. Metastable Materials Science & Technology State Key Laboratory of Yanshan University, Qinhuanydao 066004, China;
    4. College of Environment and Resources, Jilin University, Changchun 130026, China
  • Received:2009-01-09 Online:2009-11-10 Published:2009-11-10
  • Contact: ZHANG Guo. E-mail: jlu_zhangguo@yahoo.com.cn
  • Supported by:

    建设部研究开发项目(批准号: 2004-2-116)、国家自然科学基金(批准号: 40702039)和吉林大学“大学生创新性实验计划”项目(批准号: 2009C43068)资助.

Abstract:

A UV-curable acrylic polyurethane (UV-PUA) lacquer film containing spirooxazine(SO) compound was prepared. Photochromic properties of the spirooxazine in the lacquer film and polymethyl methacrylate (PMMA) film were studied in details. It was found that the acrylic polyurethane lacquer film containing SO turned to blue, purple from colorless during the UV curing process. After removing UV light source, the film discolored to pink gradually and could change reversibly between pink and purple; while SO-PMMA film could change reversibly between colorless and blue. Ultraviolet irradiation of the UV-SO-PUA film led to double absorption peaks (520 nm and 600 nm) in the visible region of UV-Vis absorption spectra, while ultraviolet irradiation only led to single peak (605 nm) for the SO-PMMA film. The stability of open form of SO in UV-PUA film was better than in SO-PMMA film at room temperature. The fatigue resistance of SO in UV-PUA film was much better than those of it in PMMA film. UV-SO-PUA film didn't appear the fatigue phenomenon after ultraviolet irradiation of 16 h. The SO in UV-PUA film show excellent photochromic properties and this character is not reported.

Key words: Spirooxazine; UV-curable acrylic polyurethane lacquer; Photochromic; Stability; Fatigue resis-tance

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