Flame Retardant Performance of Phosphatized Starch in Epoxy Resins : A Sustainable Approach to Enhancing Fire Safety

Titelangaben

Rothenhäusler, Florian ; Ludik, Felix ; Geiling, Lena ; Ruckdäschel, Holger:
Flame Retardant Performance of Phosphatized Starch in Epoxy Resins : A Sustainable Approach to Enhancing Fire Safety.
In: Journal of Applied Polymer Science. Bd. 142 (2025) Heft 32 . - e57273.
ISSN 1097-4628
DOI: https://doi.org/10.1002/app.57273

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Abstract

The imperative to protect human life and property from the threat of fires underscores the need for effective flame retardants (FRs). In response to growing calls for sustainability, bio-based FR options have emerged, among which phosphatized starch (PS) has shown considerable promise. This study investigates the FR mechanisms and FR performance of thermally stabilized PS in epoxy resin-based thermosets through thermo-gravimetric analysis, thermo-gravimetric Fourier-transform infrared spectroscopy mass spectrometry, and cone calorimetry. PS primarily acts in the condensed phase by promoting the formation of char and an intumescent layer. Incorporating 25% of PS into the thermoset significantly reduces the peak heat release rate, total heat release, and total smoke release by 70%, 52%, and 53%, respectively. As the global pursuit of responsible and environmentally conscious fire safety solutions intensifies, exploring PS as a bio-based FR represents a promising step toward a safer and more sustainable future.