Synthesis and Comparison of the Flame-Retardant Properties of Phosphorylated-Coumarins and Phosphorylated-Isophosphinolines
Year: 2025
Type: article
Abstract: This study focuses on the synthesis, properties, and comparative analysis of new flame-retardant compounds: coumarins and isophosphinolines. These compounds feature a diarylphosphine oxide (DAPO) substituent at the β-position relative to both the carbonyl and the phosphoryl groups. Various derivatives with halogens, phosphorus, and/or aromatics substituents were synthetized and their thermal stability and flammability were evaluated at the microscale by thermogravimetric analysis (TGA) and pyrolysis-combustion flow calorimetry (PCFC) in order to identify the most promising molecules for use as flame-retardant (FR) additives or comonomers. FTIR-coupled PCFC analysis was also carried out to study the combustion profiles of the molecules. Beyond the confirmation of some expected trends, such as the char promotion of phosphorus and flame inhibition of halogens, the study revealed some unexpected findings that warrant further investigation. These include the prominent role of the chlorine substitution position on the aromatic ring, as well as significant differences in FR performance between diastereoisomers.
Source: Molecules
Authors: Issaka Ibrahim Abdou Rachid, Karen-Pacelye Mengue Me Ndong, Abdoul Razak Halidou Dougourikoye, Mina Hariri, Gabin Mwande-Maguene, Jacques Lebibi, Fatemeh Darvish, Ilagouma Amadou Tidjani, David Virieux, Jean-Luc Pirat, Tahar Ayad, Loic Dumazert, Arie van der Lee, Claire Negrell, Rodolphe Sonnier
Institutions: École Nationale Supérieure de Chimie de Montpellier, Centre National de la Recherche Scientifique, Université Abdou Moumouni, Université de Montpellier, Institut Charles Gerhardt Montpellier, Université des Sciences et Techniques de Masuku, K. N. Toosi University of Technology, IMT Mines Alès, Institut Européen des Membranes
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,258
OpenAlex ID: W4414207529