高等学校化学学报

高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (03): 640.doi: 10.3969/j.issn.0251-0790.2012.03.039

• 高分子化学 • 上一篇    下一篇

KCD/MDEA/TA三元引发剂引发丙烯酸酯/液晶复合体系光聚合动力学

彭海炎1, 毕曙光1, 廖永贵1, 周兴平1, 解孝林1,2   

  1. 1. 华中科技大学化学与化工学院, 武汉 430074;
    2. 华中科技大学国家防伪工程技术研究中心, 武汉 430074
  • 收稿日期:2011-03-28 出版日期:2012-03-10 发布日期:2012-03-10
  • 通讯作者: 解孝林, 男, 博士, 教授, 主要从事高分子功能材料研究. E-mail:xlxie@mail.hust.edu.cn
  • 基金资助:

    国家杰出青年基金(批准号: 50825301)资助.

Photopolymerization Kinetics of Acrylate/Liquid Crystal Mixtures Initiated by Ketocoumarin/Amine/Triazine Ternary Photoinitiator

PENG Hai-Yan1, BI Shu-Guang1, LIAO Yong-Gui1, ZHOU Xing-Ping1, XIE Xiao-Lin1,2   

  1. 1. School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
    2. National Anti-counterfeit Engineering Research Center, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2011-03-28 Online:2012-03-10 Published:2012-03-10

PDF (PC)

被引次数

3

摘要：

采用配有441.6 nm滤光片的光差示扫描量热仪研究了3,3'-羰基双(7-二乙胺香豆素)(KCD)/N-甲基二乙醇胺(MDEA)/2-(4-甲氧苯基)-4,6-双(三氯甲基)-1,3,5-三嗪(TA)三元引发剂引发丙烯酸酯/液晶复合体系光聚合动力学行为. 结果表明, 在KCD/MDEA复合引发剂中添加TA, 显著提高了丙烯酸酯/液晶复合体系的最大光聚合速率[Rp(max)]和单体转化率, 当TA质量分数为0.5%时, 体系的Rp(max)和单体转化率分别提高了100%和69%. 同时, 随着光照强度的增加, 该体系的Rp(max)和单体转化率呈增大的趋势, 当光强从1.5 mW/cm+2提高到35.2 mW/cm+2时, 其Rp(max)和最终单体转化率分别提高了2.5和2.8倍.

关键词: 聚合物分散液晶, 可见光引发剂, 光聚合动力学

Abstract:

The photopolymerization kinetics of acrylate/liquid crystal(LC) mixtures photoinitiated by 3,3'-carbonyl bis(7-diethylaminocoumarin)(KCD)/N-methyl-N,N-diethanolamine(MDEA)/2-(4-methoxy-phe-nyl)-4,6-bis(trichloromethyl)-1,3,5-triazine(TA) was studied by photo-differential scanning calorimetry equipped with 441.6 nm filters. The results indicate that adding TA into KCD/MDEA binary photoinitiator greatly increases the maximum rate of photopolymerization Rp(max) and monomer conversion. Rp(max) and the total monomer conversion increase respectively by 100% and 69% as the content of TA is 0.5%(mass fraction). Moreover, both Rp(max) and total monomer conversion increase by 2.5 and 2.8 times separately when the light intensity rises from 1.5 mW/cm+2 to 35.2 mW/cm+2.

Key words: Polymer dispersed liquid crystals, Visible light initiator, Photopolymerization kinetics

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