معرفی
Jean-Marc LEFEBVRE is a Research Professor at the French National Centre for Scientific Research (CNRS) and Director of the Institut Chevreul, affiliated with the Materials and Transformations Unit (UMET, CNRS UMR 8207) at the University of Lille. Based in Building C6 at the Scientific City campus in Villeneuve d'Ascq, France, he leads research within the Polymer Systems Engineering team, focusing on structure-property relationships in advanced polymeric materials. His role integrates high-pressure experimental expertise via the Institut Chevreul facilities and collaboration across UMET's multi-thematic structure.
LEFEBVRE's research centers on plasticity of polymer systems, examining structural evolution during mechanical deformation in semicrystalline polymers (e.g., PVDF, polyamides), bio-based materials (e.g., poly(lactic acid)), and functional nanocomposites. Key methodologies include in-situ Small Angle/Wide Angle X-ray Scattering (SAXS/WAXS) to track real-time phase transitions, crystal polymorphism, and macromolecular reorganization. His work bridges fundamental polymer physics with applications in energy harvesting, sustainable materials, and biomedical engineering, emphasizing nanoscale characterization of piezoelectric responses and biomass-derived additives.
His recent publications (2016-2023) reveal consistent focus on deformation mechanisms in polyamides and PVDF, with emerging work on banana pseudo-stem biomass for polylactic acid functionalization. Trends include atomic force microscopy for nanoscale piezoelectric mapping, SAXS/WAXS for strain-induced structural analysis, and sustainable material design using agricultural waste. Key journals span ACS Applied Materials & Interfaces, Polymer, and Carbohydrate Polymers, highlighting cross-disciplinary impact in advanced materials.
LEFEBVRE has co-advised ten PhD students on critical topics including piezoelectric hybrid materials (Defebvin, 2015), plasticity mechanisms in amorphous polymers (Laquièvre, 2012), and strain-induced transitions in polyamides (Pepin, 2014). Notable trajectories include industrial positions at Solvay and Macopharma, academic roles at Ecole des mines de Douai and Université Catholique de Louvain, and R&D careers in Belgium. Current grants are not detailed, though UMET participates in ANR, ERC, and Interreg projects in materials engineering.
He directs the Institut Chevreul High Pressure Lab within UMET, which provides specialized equipment for advanced materials testing. UMET's infrastructure includes the PMEL Electron Microscopy Platform, FireResist platform for fire safety testing, and dedicated resources for polymer processing and characterization. These facilities enable his team's work on nanocomposites, biopolymers, and deformation studies, supporting collaborations across Earth and Planetary Materials, Physical Metallurgy, and Recycling research groups.