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<p>A biobased polyurethane/montmorillonite (MMT) nanocomposite is synthesized from epoxidized palm oil (EPO) to evaluate its thermal and anticorrosive performance at different MMT loadings. The EPO undergoes acrylation to form acrylated epoxidized palm oil (AEPO), followed by a reaction with isophorone diisocyanate (IPDI) to produce palm oil–based polyurethane (PU). Montmorillonite is incorporated at 1–9 parts per hundred resin (phr) using phenalkamine as a bio-based crosslinking agent. The PU/MMT mixtures are cured through a three-stage gradient heating process at 60, 80, and 120&#xa0;°C. Characterization includes Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), moisture permeability, and corrosion rate testing. FTIR analysis confirms complete PU formation and uniform MMT dispersion. The incorporation of MMT enhances material performance, resulting in a 21.25% increase in thermal stability at 7 phr and a 50% reduction in aluminium corrosion rate at 9 phr. Water vapour permeability decreases by 91.77%, corresponding to an 8.23% increase in permeability resistance, indicating strong barrier protection. Overall, the PU/MMT nanocomposite with 9 phr MMT exhibits superior thermal and anticorrosive properties, demonstrating its potential as a sustainable and durable coating for thermal and corrosion protection applications.</p>

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Thermal and anti-corrosion study of bio-based palm oil-phenalkamine polyurethane/montmorillonite nanocomposite

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月25日

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  • Mohamad Ismail Mohamad Isa,
  • Rabiatuladawiyah Abd Rahim,
  • Rohani Mustapha,
  • Mohd Jumain Jalil,
  • Siti Noor Hidayah Mustapha

摘要

A biobased polyurethane/montmorillonite (MMT) nanocomposite is synthesized from epoxidized palm oil (EPO) to evaluate its thermal and anticorrosive performance at different MMT loadings. The EPO undergoes acrylation to form acrylated epoxidized palm oil (AEPO), followed by a reaction with isophorone diisocyanate (IPDI) to produce palm oil–based polyurethane (PU). Montmorillonite is incorporated at 1–9 parts per hundred resin (phr) using phenalkamine as a bio-based crosslinking agent. The PU/MMT mixtures are cured through a three-stage gradient heating process at 60, 80, and 120 °C. Characterization includes Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), moisture permeability, and corrosion rate testing. FTIR analysis confirms complete PU formation and uniform MMT dispersion. The incorporation of MMT enhances material performance, resulting in a 21.25% increase in thermal stability at 7 phr and a 50% reduction in aluminium corrosion rate at 9 phr. Water vapour permeability decreases by 91.77%, corresponding to an 8.23% increase in permeability resistance, indicating strong barrier protection. Overall, the PU/MMT nanocomposite with 9 phr MMT exhibits superior thermal and anticorrosive properties, demonstrating its potential as a sustainable and durable coating for thermal and corrosion protection applications.