Journal of Radiation Research and Radiation Processing ›› 2020, Vol. 38 ›› Issue (1): 10-14.doi: 10.11889/j.1000-3436.2020.rrj.38.010202

• RADIATION CHEMISTRY • Previous Articles     Next Articles

Visible-light photopolymerization of epoxy resin photosensitized by a conjugated phenothiazine ketene dye

ZHAO Xijuan1,FU Hongyuan2,MA Xiaoyu2,ZHANG Jian1,WANG Tao2()   

  1. 1. China Jingye Engineering Technology Co. , Ltd. , Beijing 100088, China
    2. College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2019-10-30 Revised:2019-12-13 Accepted:2019-12-13 Online:2020-02-20 Published:2020-02-25
  • Contact: WANG Tao
  • About author:ZHAO Xijuan (female) was born in July 1980, and obtained her doctoral degree in Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, majoring in organic chemistry, engaging in polymer materials research, professor-level senior engineer
  • Supported by:
    the Open Fund of China Jingye Engineering Technology Co.,Ltd. National-recognized Enterprise Technology Center(JZA2017Kj03)


A conjugated phenothiazine ketene dye (Phz-KT) with D?π?A?π?D structure was synthesized by the reaction between N-ethylphenothiazine and acetone. UV-vis spectroscopic studies showed that Phz-KT has strong absorption at 380~550 nm. A steady photolysis experiment showed that the dye has photobleaching properties under light irradiation. Considering Phz-KT dye as a photosensitive sensitizer and diaryl iodonium salt as an initiator, the epoxy ring-opening polymerization of bisphenol A epoxy resin E51 was investigated under irradiation from 460 nm and 520 nm LED light sources. It was found that the Phz-KT dye initiated epoxy resin polymerization via charge-transfer-sensitized diaryliodonium salt.

Key words: Ketene, Dye, Epoxy resin, Photopolymerization, Light emission diode, Light source

CLC Number: 

  • TL13