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Macromolecular Research

, Volume 13, Issue 4, pp 362–365 | Cite as

The effects of silica nanoparticles on the photocuring behaviors of UV-curable polyester acrylate-based coating systems

  • Jung-Dae Cho
  • Yang-Bae Kim
  • Hyoung-Tae Ju
  • Jin-Who Hong
Notes

Conclusions

The photocuring behaviors of UV-curable PEA-based coating systems with and without silica nanoparticles have been studied by photo-DSC, UV-visible spectroscopy, and FTIR spectroscopy. Photo-DSC analysis revealed that as the concentration of silica nanoparticles was increased up to 5 wt%, the exotherm, ultimate percentage conversion, and cure rate increased gradually, whereas they decreased above 10 wt%. This result was confirmed by FTIR spectroscopy analysis and indicated that the presence of silica nanoparticles at below 10 wt% accelerated the cure reaction and cure rate of the UV-curable PEA-based systems due to the synergistic effect of silica nanoparticles as an effective flow or diffusion-aid agent during the photopolymerization process and by lengthening the path of the UV light by partial scattering or reflection. However, a decrease in photopolymerization reactivity occurred when the silica content was increased above 10 wt%, which is attributable to aggregation of silica nanoparticles due to their high surface energy.

Keywords

Silica Nanoparticles Fumed Silica Photopolymerization Silica Nanospheres Transmission FTIR Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The Polymer Society of Korea and Springer 2005

Authors and Affiliations

  • Jung-Dae Cho
    • 1
  • Yang-Bae Kim
    • 1
  • Hyoung-Tae Ju
    • 2
  • Jin-Who Hong
    • 2
  1. 1.Institute of Photonics & Surface TreatmentQ-Sys Co. Ltd.GwangjuKorea
  2. 2.Department of Polymer Science & EngineeringChosun UniversityGwangjuKorea

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