PhD Defense of Pauline HARDY
Soutenance de thèseDear All,
It is my pleasure to invite you to the defense of my PhD thesis entitled :
« Synthesis and Characterization of Composite Textiles Based on Metal-Organic Frameworks for the Capture and Decomposition of Organophosphorus Nerve Agents »
The defense will take place on Tuesday, the 17th of December, at 9.30 am in the amphitheater of Michel Delhaye (Institut Chevreul, ground floor) - Av. Paul Langevin, 59650 Villeneuve-d'Ascq.
The jury of my defense is composed of:
| Dr. SURBLE Suzy | Reporter | EC, NIMBE – LEDNA, CEA – CNRS/Université Paris-Saclay/UMR 3685 |
| Pr. FLOQUET Sébastien | Reporteur | PR, MIM, Université de Versailles/Institut Lavoisier de Versailles/UMR 8180 |
| Dr. COFFINIER Yannick | Examiner | DR, IEMN, Université de Lille/UMR 8520 |
| Dr. LOUIS Benoît | Examiner | DR, ICPEES, Université de Strasbourg/ UMR 7515 |
| Dr. SALLES Fabrice | Examiner | CR, ICGM, Université de Montpellier/UMR 5253 |
| MOREAU Emilie | Invited member | Direction Générale de l’Armement |
| Pr. VOLKRINGER Christophe | Thesis director | PR, UCCS, Centrale Lille Institut/UMR 8181 |
| Dr. POURPOINT Frédérique | Thesis co-director | EC, UCCS, Centrale Lille Institut/UMR 8181 |
| Dr. DHAINAUT Jérémy | Thesis co-supervisor | CR, UCCS, Université de Lille/UMR 8181 |
Key words
| textile, porous materials, MOF, degradation, warfare agents |
Summary
| Toxic warfare agents remain a persistent threat to military forces and civilians. Porous materials are an effective response to capture and immobilize this kind of molecules. In the case of chemical weapons, research has been conducted in recent years on Metal-Organic Framework (MOF) solids. Indeed, these microporous materials have high porosity, usually combined with catalytic properties. Thus, some MOFs, particularly those based on zirconium, allow effective capture and degradation of warfare toxic molecules, including organophosphorus nerve agents. As part of this thesis work, a study on the functionalization of textile fibers by MOFs will be carried out, to propose effective composites protecting organophosphorus nerve agents. For the fabrication of these MOF/textile composites, two different supports were chosen, a resistant polyester fiber and a high adsorption fiber based on activated carbon. However, despite the advantages of these two textile fibers, they show a chemical inertness that makes it difficult to graft MOFs to the surface of the support. To overcome this, the fibers were pretreated using different physical or chemical techniques to create hydrophilic anchoring sites, thus facilitating the grafting of the MOF to the surface of the support. These composite fibers were then studied for the decomposition of dimethyl 4-nitrophenyl phosphate (DMNP) and the VX agent (in the case of the polyester-based composite only). Finally, a solid-state Nuclear Magnetic Resonance (31P NMR) analysis also made it possible to propose decomposition mechanisms of DMNP, depending in particular on humidity and the presence of a basic co-catalyst. |
After the defense, a get-together party will follow.
I hope to see you there!
Kind regards,
Pauline HARDY