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This work investigates the photopolymerization behavior of acrylated epoxidized soybean oil (AESO) and vanillin dimethacrylate (VDM) with and without a photoinitiator (2,2-dimethoxy-2-phenylacetophenone) (DMPA). A combination of complex network methods, positron annihilation lifetime spectroscopy (PALS), attenuated total reflectance Fourier transform infrared (ATR-FTIR) and electron paramagnetic resonance (EPR) spectroscopy was used to obtain information on the network properties of polymer matrix according to the proposed light on/off protocol. The results indicated significant photo-structural changes, especially for prolonged exposure times, highlighting the importance of understanding the photostability of these biobased materials for their potential applications in biosensors and 3D printing.

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Complex Network Methods, PALS, ATR-FTIR and EPR Study of Photopolymerization

  • 会议论文

  • 发表日期：

    2025年

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  • Taras Kavetskyy,
  • Oksana Zubrytska,
  • Martin Stievenard,
  • Ondrej Šauša,
  • Helena Švajdlenková,
  • Volodymyr Soloviev,
  • Andrii Bielinskyi,
  • Jolita Ostrauskaite,
  • Arnold Kiv

摘要

This work investigates the photopolymerization behavior of acrylated epoxidized soybean oil (AESO) and vanillin dimethacrylate (VDM) with and without a photoinitiator (2,2-dimethoxy-2-phenylacetophenone) (DMPA). A combination of complex network methods, positron annihilation lifetime spectroscopy (PALS), attenuated total reflectance Fourier transform infrared (ATR-FTIR) and electron paramagnetic resonance (EPR) spectroscopy was used to obtain information on the network properties of polymer matrix according to the proposed light on/off protocol. The results indicated significant photo-structural changes, especially for prolonged exposure times, highlighting the importance of understanding the photostability of these biobased materials for their potential applications in biosensors and 3D printing.