Scholarlink

<p>Mild steel corrosion under saline conditions poses a significant industrial challenge, necessitating sustainable and high-performance protective coatings. This study reports the development of a bio-based anticorrosive nanocomposite coating derived from a vanillin-based Schiff base poly(benzoxazine–polyurethane–TiO₂) system, which integrates the rigidity of polybenzoxazine, the flexibility of polyurethane, and the reinforcement of TiO₂ nanoparticles. The vanillin-based benzoxazine monomer was synthesized via the Mannich condensation reaction and characterized using NMR and ESI-MS (m/z = 313 [M + 1]). TiO₂ nanoparticles were prepared hydrothermally and incorporated into the polymer matrix with varying polyurethane concentrations. The hybrid coatings were fabricated through thermal curing and systematically characterized using FT-IR, UV–VIS, XRD, SEM, electrochemical techniques (Tafel polarization and EIS), water absorption, gel content, and Density Functional Theory (DFT/MEP) analyses.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Vanillin-derived schiff base poly (benzoxazine-PU-nano TiO₂) anticorrosive coating for mild steel

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月5日

查看全文
  • M. Meera,
  • V. Arivalagan,
  • L. Devaraj Stephen,
  • S. G. Gunasekaran

摘要

Mild steel corrosion under saline conditions poses a significant industrial challenge, necessitating sustainable and high-performance protective coatings. This study reports the development of a bio-based anticorrosive nanocomposite coating derived from a vanillin-based Schiff base poly(benzoxazine–polyurethane–TiO₂) system, which integrates the rigidity of polybenzoxazine, the flexibility of polyurethane, and the reinforcement of TiO₂ nanoparticles. The vanillin-based benzoxazine monomer was synthesized via the Mannich condensation reaction and characterized using NMR and ESI-MS (m/z = 313 [M + 1]). TiO₂ nanoparticles were prepared hydrothermally and incorporated into the polymer matrix with varying polyurethane concentrations. The hybrid coatings were fabricated through thermal curing and systematically characterized using FT-IR, UV–VIS, XRD, SEM, electrochemical techniques (Tafel polarization and EIS), water absorption, gel content, and Density Functional Theory (DFT/MEP) analyses.

Graphical Abstract