Thermal Stability and Decolorization Property of Cationic Photoinitiated Color Forming Microcapsule Material

DOI Web Site Web Site 参考文献8件
  • Lai Weidong
    Department of Physics Science and Technology, Hebei University
  • Li Winzheng
    Department of Sciences, Hebei University of Science and Technology
  • An Wen
    Department of Physics Science and Technology, Hebei University
  • Chen Yingjuan
    Department of Physics Science and Technology, Hebei University
  • Li Xianowei
    Department of Physics Science and Technology, Hebei University

この論文をさがす

抄録

Core-shell structured microcapsule with 0.44 μm diameter had been prepared by encapsulating the cationic photoinitiator and fluorane dye as photo-sensitive color-forming ingredients. The encapsulation ratio was detected as about 61.6%. The shell was thermal stable below 270 °C. After UV exposure for 20 s, the color-forming image density had been increased from 0.1 to 0.75. Decolorization property had been observed that the higher the temperature was, the more decrement the image density decolorized. The density decayed from 0.74 to 0.23 in just 5 min at 180 °C. It was proposed that the higher temperature influenced the decolorization process through competitive procedures. One procedure was the thermal decomposition of cationic photoinitiator to heighten color image density, and the other was to destroy the carboxy bonds in the color-formed fluorane dyes after thermal energy transmitted through phase-changed microcapsule shell. It was concluded that the latter one played a more significant role under higher temperature above 140 °C, and performed the decolorization property.

収録刊行物

参考文献 (8)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ