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Abstract <p>As people’s living standards continue to improve, the harassment of humans by microorganisms, such as diseases caused by bacteria, fungi, and other microorganisms, has increasingly come into public view. Therefore, the development of coatings with antibacterial properties is necessary. In this paper, fluorine-containing resins were synthesized using isophorone diisocyanate (IPDI), polyethylene glycol-1000 (PEG-1000), pentaerythritol triacrylate (PETA), and 1H,1H,2H,2H-perfluoro-1-octanol as raw materials. The fluorine-containing resin was combined with different proportions of <i>p</i>-anisaldehyde and D-(+)− 3-phenyllactic acid to prepare various UV-curable formulations. The study investigated the double-bond conversion rate during the resin curing process, the glass transition temperature, and the antibacterial and hydrophobic properties of the cured resin. The results indicate that through testing of different UV-curable hydrophobic resin formulations, the optimal comprehensive performance of the coating was achieved with a fluorine-containing hydrophobic resin mass fraction of 35%, a modified bisphenol A epoxy diacrylate (6215-100) mass fraction of 40%, a trimethylolpropane triacrylate (TMPTA) mass fraction of 10%, an tripropylene glycoldiacrylate (EM-223) mass fraction of 10%, and a photoinitiator mass fraction of 5%. Finally, by blending various types and contents of mold inhibitors with the matrix resin, UV-curable mold-resistant hydrophobic coatings were prepared and subjected to antibacterial and mold resistance tests, hydrophobic angle measurements, real-time infrared analysis, and DSC testing. In this study, the diameter of the inhibition zone of coatings containing different antibacterial agents against three types of microorganisms was measured. The results showed that the blank formulation exhibited no antibacterial activity. Among the tested antibacterial agents,&#xa0;<i>p</i>-anisaldehyde (with a maximum addition amount of 15 wt%) and D-(+)− 3-phenyllactic acid (with a maximum addition amount of 8 wt%) showed the best antibacterial effects; the former had better activity due to its good compatibility with the coating matrix. The antifungal activity of the coatings against&#xa0;<i>Aspergillus flavus</i>&#xa0;was much higher than their antibacterial activity against bacteria. Specifically, the optimal antibacterial activity against bacteria was achieved when the addition amount of&#xa0;<i>p</i>-anisaldehyde was 15 wt%, while the optimal antifungal activity was obtained when the addition amount of&#xa0;<i>p</i>-anisaldehyde was 10 wt%.</p> Graphical abstract <p></p>

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Study on the antibacterial properties of UV-cured multifunctional fluorinated acrylic resin

  • 期刊论文

  • 发表日期：

    2026年2月20日

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  • Xiwen Cui,
  • Zhengtao Wu,
  • Changzheng Chen,
  • Bingbin Zhang,
  • Shupeng Wu,
  • Haitao Wu,
  • Li Jiang,
  • Susu Cui,
  • Yan Yuan

摘要

Abstract

As people’s living standards continue to improve, the harassment of humans by microorganisms, such as diseases caused by bacteria, fungi, and other microorganisms, has increasingly come into public view. Therefore, the development of coatings with antibacterial properties is necessary. In this paper, fluorine-containing resins were synthesized using isophorone diisocyanate (IPDI), polyethylene glycol-1000 (PEG-1000), pentaerythritol triacrylate (PETA), and 1H,1H,2H,2H-perfluoro-1-octanol as raw materials. The fluorine-containing resin was combined with different proportions of p-anisaldehyde and D-(+)− 3-phenyllactic acid to prepare various UV-curable formulations. The study investigated the double-bond conversion rate during the resin curing process, the glass transition temperature, and the antibacterial and hydrophobic properties of the cured resin. The results indicate that through testing of different UV-curable hydrophobic resin formulations, the optimal comprehensive performance of the coating was achieved with a fluorine-containing hydrophobic resin mass fraction of 35%, a modified bisphenol A epoxy diacrylate (6215-100) mass fraction of 40%, a trimethylolpropane triacrylate (TMPTA) mass fraction of 10%, an tripropylene glycoldiacrylate (EM-223) mass fraction of 10%, and a photoinitiator mass fraction of 5%. Finally, by blending various types and contents of mold inhibitors with the matrix resin, UV-curable mold-resistant hydrophobic coatings were prepared and subjected to antibacterial and mold resistance tests, hydrophobic angle measurements, real-time infrared analysis, and DSC testing. In this study, the diameter of the inhibition zone of coatings containing different antibacterial agents against three types of microorganisms was measured. The results showed that the blank formulation exhibited no antibacterial activity. Among the tested antibacterial agents, p-anisaldehyde (with a maximum addition amount of 15 wt%) and D-(+)− 3-phenyllactic acid (with a maximum addition amount of 8 wt%) showed the best antibacterial effects; the former had better activity due to its good compatibility with the coating matrix. The antifungal activity of the coatings against Aspergillus flavus was much higher than their antibacterial activity against bacteria. Specifically, the optimal antibacterial activity against bacteria was achieved when the addition amount of p-anisaldehyde was 15 wt%, while the optimal antifungal activity was obtained when the addition amount of p-anisaldehyde was 10 wt%.

Graphical abstract