Raymond Hajj

ORCID: 0000-0001-5961-8401
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About
Contact & Profiles
Research Areas
  • Flame retardant materials and properties
  • Fire dynamics and safety research
  • Natural Fiber Reinforced Composites
  • Lignin and Wood Chemistry
  • Polymer composites and self-healing
  • Combustion and Detonation Processes
  • Synthetic Organic Chemistry Methods
  • Polymer Nanocomposites and Properties
  • Silicone and Siloxane Chemistry

Ingenierie des Materiaux polymeres
2022

IMT Mines Alès
2017-2021

Lebanese University
2017-2021

Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé
2020

Centre National de la Recherche Scientifique
2020

Université de Strasbourg
2020

Institut Mines-Télécom
2017

A family of biobased polyimine elastomeric vitrimers was synthesized by reactions between di- and trifunctional polyetheramines a furan-based dialdehyde. By varying the triamine to diamine ratio molar mass diamine, set cross-linked networks with similar chemical structures but different cross-link densities obtained. All these materials exhibit vitrimeric behavior because dynamic nature imine bonds. This fundamental study clearly reveals that density has drastic effect on relaxation...

10.1021/acs.macromol.0c00453 article EN Macromolecules 2020-05-13

In this study, a representative set of thermally thin materials including various lignocellulosic and synthetic fabrics, dense wood, polypropylene sheets were tested using cone calorimeter at different heat fluxes. Time-to-ignition, critical flux, peak release rate (pHRR) the main parameters considered. It appears that flammability is firstly monitored by sample weight. Especially, while burning thermally-thin does never reach steady state in calorimeter, their pHRR to be mainly driven fire...

10.3390/polym13081297 article EN Polymers 2021-04-15
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