高等学校化学学报

高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (7): 639.

• 研究论文 • 上一篇    下一篇

硫杂蒽酮衍生物对聚乙烯醇肉桂酸酯光增感作用的研究

余尚先1, 山冈亚夫2   

  1. 1. 北京师范大学化学系;
    2. 日本千葉大学工学部
  • 收稿日期:1985-02-16 出版日期:1986-07-24 发布日期:1986-07-24

Studies on the Photosensitization of Gelation of Polyvinyl Cinnamate by Thioxanthone Derivatives

Yu Shangxian1, Tsuguo Yamaoka2   

  1. 1. Department of Chemistry, Beijing Normal University, Beijing;
    2. Department of Image Science and Technology, Chiba University, Ohiba, Japan
  • Received:1985-02-16 Online:1986-07-24 Published:1986-07-24

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摘要： 用12种硫杂蒽酮衍生物对聚乙烯醇肉桂酸酯的增感作用进行了研究,发现2,4-二异丙基硫杂蒽酮(DITX)等具有良好的增感效果,其相对感度与5-硝基苊同水平,当用化学荧光灯(黑光灯)曝光时,最低固化光量约为5mj/cm2。对其增感固化机理也进行了研究,初步推证其属于三线态DITX向基志聚乙烯醇肉桂酸酯传递能量进行增感所导致的光二聚化交联过程。

Abstract: Twelve thioxanthone derivatives were used for photosensitizing the gelation of poly vinyl cinnamate.It was shown that 2,4-Diisopropyl thioxanthone (DITX) and several others possess excellent photosensitizing power,the relative sensitivities being on the same level as 5-nitroacenaphthene.when the system of polyvinyl cinnamate-DITX (100:5) were exposed to the chemical fluorescent lamp (black lamp 360),the minimum quantity of exposure energy required for gelation of the polymer is about 5mj/cm2.The mechanism of photosensitization and photogelation was also studied.It is likely that the mechanism is of the class of photocrosslinking process of dipolyme-rization due to energy-transfer from triplet state-DITXto ground state-polyvinyl cinnamate.

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