Synthesis of non-phosphorylated epoxidised corn oil as a novel green flame retardant thermoset resin

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Abstract
This study aimed to produce a new potential flame retardant thermoset resin from epoxidised corn oil through a one-pot method using liquid inorganic catalysed with hydrogen peroxide. Using a gas chromatography–mass selective detector, attenuated total reflectance-fourier transform infrared spectroscopy, proton nuclear magnetic resonance imaging, optical microscopy, and scanning emission microscopy, we synthesised a bio-based resin based on newly designed parameters. The flame retardant capacity was fully established using thermogravimetric analysis and a micro calorimeter. The produced epoxidised corn oil had a relative percentage conversion of oxirane of approximately 91.70%, wherein the amount of double bonds converted into epoxides was calculated. A significant reduction from 17 to 40% in peak heat rate release (pHRR) and 26–30% in total heat release was observed, confirming its flame retardant property. Thus, the potential of epoxidised corn oil was demonstrated.
Funding Information
  • National Research Foundation of Korea (2019R1A2B5B03004980 and 2018R1A6A1A03024509, 2019R1A2B5B03004980 and 2018R1A6A1A03024509, 2019R1A2B5B03004980 and 2018R1A6A1A03024509)

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