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

Yukio Fujimori, Takashi Kaneko, Hiroyuki Nishide, Eishun Tsuchida

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)485-488
Number of pages4
JournalKobunshi Ronbunshu
Volume50
Issue number6
Publication statusPublished - 1993

Fingerprint

Dental composites
polymerization
resin
Resins
Polymerization
irradiation
Irradiation
Methacrylates
Reducing agents
absorption spectrum
electron spin resonance
Paramagnetic resonance
anion
Absorption spectra
Negative ions
hydrogen
Reducing Agents
Hydrogen
oxygen
Oxygen

ASJC Scopus subject areas

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

Cite this

Photoreaction and photoinitiation behavior in the light-cured dental composite resins. / Fujimori, Yukio; Kaneko, Takashi; Nishide, Hiroyuki; Tsuchida, Eishun.

In: Kobunshi Ronbunshu, Vol. 50, No. 6, 1993, p. 485-488.

Research output: Contribution to journalArticle

Fujimori, Y, Kaneko, T, Nishide, H & Tsuchida, E 1993, 'Photoreaction and photoinitiation behavior in the light-cured dental composite resins', Kobunshi Ronbunshu, vol. 50, no. 6, pp. 485-488.
Fujimori, Yukio ; Kaneko, Takashi ; Nishide, Hiroyuki ; Tsuchida, Eishun. / Photoreaction and photoinitiation behavior in the light-cured dental composite resins. In: Kobunshi Ronbunshu. 1993 ; Vol. 50, No. 6. pp. 485-488.
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