Photopolymerization of Triazine Dithiol Cast Films

Kunio Mori, Seichi Sai, Akira Watanabe, Tokuji Miyashita, Minoru Matsuda

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Cast thin films of 6-substituted groups-1,3,5-triazine-2,4-dithiols (RTD) were prepared on quartz plates by the spin coating method and were polymerized under the irradiation of UV light with the wave length of 250 to 400 nm. The conversion of monomer cast films was determined by measuring the changes of the absorbance in the UV spectra of irradiated films. To identify the further formation of polymer after irradiation, FT-IR spectra and GPC were measured. The photopolymerization of RTD cast films with alkyl groups was expressed by the pseudo first order and explained by the oxidation of the mercapto group with photo-induced oxygen in air, giving a RTD disulfide polymer. The photopolymerization of cast films with an unsaturated group obeyed a parabolic law. In this reaction the products after UV light irradiation contained THF insoluble polymer because the addition of the mercapto groups to the unsaturated groups and the oxidation of mercapto groups simultaneously occurred.

Original languageEnglish
Pages (from-to)819-827
Number of pages9
Issue number12
Publication statusPublished - 1989 Dec
Externally publishedYes


  • Addition
  • Cast Thin Film
  • Oxidation
  • Photopolymerization
  • Spin Coating Method
  • Triazine Thiols
  • UV Light

ASJC Scopus subject areas

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


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