Dye fading of dyed rayon fibers containing titanium oxide-silica complex photocatalyst

Tetsuya Takahashi, Wakako Kasai, Tetsuo Kondo

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

Excellent antibacterial properties and self cleaning performance have been reported for rayon fibers containing titanium oxide silica complex photocatalyst. However, when these fibers are dyed, photocatalysis may also decompose the dye. In this study, a direct dye and a reactive dye were used to dye these fibers in order to examine the dye fading of the dyed these fibers. First, the dyed these fibers were subjected to UV irradiation in air. Neither the direct dye nor the reactive dye faded at all and the color hue of the dyed these fibers was very stable to ultraviolet light. Subsequently, the dyed these fibers were subjected to UV irradiation in water. Although both dyes were found to fade, the direct dye faded more readily than the reactive dye. The difference was more pronounced when these fibers were dyed in light colors. The difference was believed to show up because cellulose molecules making up rayon fibers bond with direct dye molecules through hydrogen bonds whereas cellulose molecules bond with reactive dye molecules through covalent bonds. Finally, to examine the photocatalytic function of the dyed rayon fibers containing titanium oxide silica complex photocatalyst, the dyed these fibers were subjected to UV irradiation while immersed in an methylene blue aqueous solution. Methylene blue underwent dye decomposition, showing that the dyed these fibers maintained an dequate photocatalytic function.

元の言語英語
ページ(範囲)176-183
ページ数8
ジャーナルJournal of Fiber Science and Technology
65
発行部数7
DOI
出版物ステータス出版済み - 1 1 2009

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Rayon
Titanium oxides
Photocatalysts
Silicon Dioxide
Coloring Agents
Dyes
Silica
Fibers
Molecules
Methylene Blue
Chemical bonds
Irradiation
Cellulose
rayon
titanium dioxide
Color
Covalent bonds
Photocatalysis
Cleaning
Hydrogen bonds

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Materials Science (miscellaneous)
  • Polymers and Plastics
  • Industrial and Manufacturing Engineering

これを引用

Dye fading of dyed rayon fibers containing titanium oxide-silica complex photocatalyst. / Takahashi, Tetsuya; Kasai, Wakako; Kondo, Tetsuo.

:: Journal of Fiber Science and Technology, 巻 65, 番号 7, 01.01.2009, p. 176-183.

研究成果: ジャーナルへの寄稿記事

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