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<p>The development of paper materials with advanced functionalities offers new opportunities for applications beyond traditional uses. In this study, a fluorine-free and environmentally friendly superhydrophobic coating was fabricated via a simple spray coating method. VTMS-modified SiO<sub>2</sub> nanoparticles (VTMS/SiO<sub>2</sub>) were applied to atmospheric plasma-treated paper using polydimethylsiloxane (PDMS) and KH550 as crosslinking and coupling agents, respectively. The chemical functionalities of the surface and the morphology of the coated samples were characterized by FTIR and SEM. Among the different formulations, the optimum condition, i.e., 15&#xa0;s plasma treatment followed by coating with 7.5VTMS/SiO<sub>2</sub>/0.75KH550, resulted in excellent superhydrophobicity with a water contact angle (WCA) of 160.4 ± 0.5° and a sliding angle (WSA) of 4.5 ± 1.1°. In addition, the coating exhibited excellent mechanical resistance and retained its properties after 20 Taber abrasion cycles. Chemical stability under acidic and alkaline conditions was also maintained. Compared to coatings without plasma treatment, the plasma-enhanced surface exhibited significantly improved adhesion and robustness. These results illustrate a scalable, fluorine-free strategy for producing durable, multifunctional paper surfaces suitable for advanced packaging and protective applications.</p>

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Optimal formulation and plasma-assisted deposition of a fluorine-free coating for highly durable superhydrophobic paper

  • 期刊论文

  • 发表日期：

    2026年5月13日

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  • Paveena Laokul,
  • Punakit Tipparak,
  • Porntipa Phuengyen,
  • Nattakan Kanjana,
  • Kattiya Srakaew,
  • Artit Chingsungnoen,
  • Phitsanu Poolcharuansin

摘要

The development of paper materials with advanced functionalities offers new opportunities for applications beyond traditional uses. In this study, a fluorine-free and environmentally friendly superhydrophobic coating was fabricated via a simple spray coating method. VTMS-modified SiO2 nanoparticles (VTMS/SiO2) were applied to atmospheric plasma-treated paper using polydimethylsiloxane (PDMS) and KH550 as crosslinking and coupling agents, respectively. The chemical functionalities of the surface and the morphology of the coated samples were characterized by FTIR and SEM. Among the different formulations, the optimum condition, i.e., 15 s plasma treatment followed by coating with 7.5VTMS/SiO2/0.75KH550, resulted in excellent superhydrophobicity with a water contact angle (WCA) of 160.4 ± 0.5° and a sliding angle (WSA) of 4.5 ± 1.1°. In addition, the coating exhibited excellent mechanical resistance and retained its properties after 20 Taber abrasion cycles. Chemical stability under acidic and alkaline conditions was also maintained. Compared to coatings without plasma treatment, the plasma-enhanced surface exhibited significantly improved adhesion and robustness. These results illustrate a scalable, fluorine-free strategy for producing durable, multifunctional paper surfaces suitable for advanced packaging and protective applications.