Photochemically bifunctional epoxy compound containing a chalcone moiety

Dong Hoon Choi, Sang Joon Oh, Hyo Bok Cha, Joon Youl Lee

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

A new bifunctional epoxy compound was synthesized by the reaction of 4,4′-dihydroxychalcone and epichlorohydrin. Photosensitivity of the synthesized chalcone-epoxy compound was investigated by using UV-visible and Fourier transform infrared spectroscopies. The result of spectroscopic analysis substantiated that the chalcone-epoxy compound has functions of both crosslinking and cationic polymerization by UV exposure (λ = 300-360 nm). Photodimerization of the chalcone-epoxy compound was confirmed by UV-visible and IR absorbance changes of the C=C double bond of the chalcone unit. A small amount of onium salt as a photoinitiator could facilitate the cationic photopolymerization of the chalcone-epoxy compound by UV exposure. The UV-cured chalcone-epoxy compound showed an excellent thermal stability as compared to the conventional UV-cured bisphenol A type epoxy resin.

Original languageEnglish
Pages (from-to)1951-1959
Number of pages9
JournalEuropean Polymer Journal
Volume37
Issue number10
DOIs
Publication statusPublished - 2001 Oct

Keywords

  • Bifunctional epoxy
  • Cationic photopolymerization
  • Chalcone-epoxy
  • Photodimerization
  • Photosensitivity
  • Thermal stability

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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