Photoreaction and photoinitiation behavior in the light-cured dental composite resins

Yukio Fujimori, Takashi Kaneko, Hiroyuki Nishide, Eishun Tsuchida

研究成果: Article

4 被引用数 (Scopus)

抄録

Photoreaction of camphorquinone (CQ) and dimethylaminoethyl methacrylate (DMAEMA) and its initiation capability of MMA polymerization was studied as a model system for visible light-cured dental composite resins. The photo-sensitizer (CQ) produced CQ radical anion by irradiation in the presence of the reducing agent (DMAEMA) under N2. ESR signal intensity and the IR and UV-Vis absorption spectra of CQ carbonyl group decreased during irradiation, and the polymerization rate of MMA depended on the decrease in the CQ carbonyl group. The hydrogen abstraction reaction by CQ radical seemed to promote the polymerization of MMA. Atmospheric oxygen inactivated the CQ radical and reduced the polymerization.

本文言語English
ページ(範囲)485-488
ページ数4
ジャーナルKobunshi Ronbunshu
50
6
出版ステータスPublished - 1993

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Environmental Science(all)
  • Materials Science (miscellaneous)
  • Ceramics and Composites
  • Polymers and Plastics

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