Functional Polymers Engineering
- Development of new photoinitiating systems
- Development of processes and innovative techniques in photopolymerization
- Development of new synthetic methodologies combining photopolymerizations and controlled radical polymerizations
- Control of growth, chemistry and morphogenesis of thin films fabricated by plasma-assisted polymerization
- Design of surfaces and interfaces with controlled chemical and physico-chemical properties, towards fabrication of stimuli-responsive surfaces
Design of new photoinitiating systems as well as photosensitive resins for specific applications.
J.M.Becht, C. Dietlin, B. Graff, J. Lalevée*, F. Morlet-Savary
*Contact : email@example.com
The development of photosensitive resins for radical or cationic polymerizations or of the preparation of interpenetrated polymer networks require high-level, fundamental investigation of both the photoinitiating systems (e.g. under mild conditions of light irradiation) and each component of the photosensitive resin (e.g. new monomers, hybrid polymerization, stabilizers…).
In fact, it is through a complete optimisation of the photosensitive resin (i.e. photoinitiating system with monomers and other additives) that the final properties of the material created through light irradiation are then enhanced for its use in several fields such as dental materials, surgical glues, functional coatings, building and industrial materials.
The most significant point relies upon the fundamental knowledge of the chemical processes governing the reactivity of these photosensitive resins.
Lalevée, J., Telitel, S., Tehfe, M. A., Fouassier, J. P., Curran, D. P. and Lacôte, E. Angew. Chem. Int. Ed., 2012 51 : 5958–5961. DOI : 10.1002/anie.201200975
Dietlin, C., Schweizer, S., Xiao, P., Zhang, J., Morlet-Savary, F., Graff, B., Fouassier, J.-P. and Lalevée, J. Polym. Chem. 2015, 21, 3895 DOI : 10.1039/C5PY00258C
Xiao, P., Zhang, J., Dumur, F., Tehfe, M.A., Morlet-Savary, F., Graff, B., Gigmes, D., Fouassier, J.P. and Lalevée, J. Prog. Polym. Sci. 2015, 41, 32 DOI : 10.1016/j.progpolymsci.2014.09.001
Le Quéméner, F., Subervie, D., Morlet-Savary, F., Lalevée, J., Lansalot, M., Bourgeat-Lami, E., Lacôte, E. Angew. Chem. Int. Ed., in Press
Bouzrati, M., Kirschner, J., Fik, C.P., Maier, M., Dietlin, C., Morlet-Savary, F., Fouassier, J.P., Becht, J.M., Klee, J.E., Lalevée, J. Macromolecules, 2017, 50, 6911-6923 DOI : 10.1021/acs.macromol.7b01370
Photopolymerization in dispersed systems
*Contact : firstname.lastname@example.org
The polymer industry is going through one of the most significant periods of change in its history. Driven by new environmental regulations, the development of eco-efficient processes and zero-VOC products has become an absolute necessity. In this field, 2 technologies stand out : Polymerization in dispersed media and Photopolymerization. By combining these two main processes, we aim to develop a “hybrid” next-generation technology based on thiol-ene photopolymerization in dispersed media. Advanced manufacturing based on photoreactor promises a wave of high sulphur content dispersed products (films, nanoparticles, porous network). Their outstanding properties open the door to applications responding to current industrial needs such as non-leaching materials, O2 barrier and biobased waterborne coatings, biologically-active particles, hybrid nanosensors and monolithic chromatography column.
PHOTO-EMULSION is a EU-funded Innovative Training Network (ITN) project of the H2020 programme. Led by IS2M (Dr. Abraham Chemtob), it involves a high-quality research network including 8 internationally reputed academic institutions, 4 leading companies and 2 non-profit organizations. Balanced & EU-wide, its diversity expresses through the participation of 8 countries (Austria, France, Germany, Ireland, Poland, Slovenia, Sweden & Spain), 50 % female scientists-in-charge, and structures supporting gender equality.
Ab Initio Batch Emulsion Thiol–Ene Photopolymerization, Cuong Minh Quoc Le, Marc Schmutz, and Abraham Chemtob, Macromolecules 2020, 53, 2369-2379. DOI : 10.1021/acs.macromol.0c00265
Photo-induced macromolecular engineering
*Contact : email@example.com
The introduction of external stimuli in synthetic methodologies has become a very active research axis in the field of macromolecular engineering. In this context, we are developing photo-mediated controlled radical polymerization mechanisms using LEDs as light sources emitting in the visible domain. We have focused on photopolymerization-induced self-assembly (photoPISA) based on photomediated RAFT polymerization mechanism, which has emerged as a major method for the visible light-driven synthesis of amphiphilic block copolymer nanoparticles. Photochemically initiated PISA opens avenues for improved process conditions in regards to reaction efficiency, energy consumption and safety. the potential of PISA-derived nano-objects in two emerging fields : templated synthesis of mesoporous carbon materials and optical imaging of cells using fluorescent nanoparticles.
Tkachenko, V. ; Vidal, L. ; Josien, L ; Schmutz, M. ; Poly, J. ; Chemtob, A. Characterizing the Core-Shell Architecture of Block Copolymer Nanoparticles with Electron Microscopy : A Multi-Technique Approach. Polymers 2020, 12, 1656. DOI : 10.3390/polym12081656
Tkachenko, V. ; Josien, L. ; Schrodj, G. ; Hajjar-Garreau, S. ; Urbaniak, S. ; Poly, J. ; Chemtob, A. A DSC and XPS characterization of core–shell morphology of block copolymer nanoparticles. Colloid Polymer Science 2020, 298, 1095. DOI : 10.1007/s00396-020-04676-7
Tkachenko, V. ; Matei Ghimbeu, C. ; Vaulot, C. ; Josien, L. ; Vidal, L. ; Poly, J. ; Chemtob, A. Diblock Copolymer Core–Shell Nanoparticles as Template for Mesoporous Carbons : Independent Tuning of Pore Size and Pore Wall Thickness. Langmuir 2019, 35, 16324. 10.1021/acs.langmuir.9b02994
Tkachenko, V. ; Ghimbeu, C. M. ; Vaulot, C. ; Vidal, L. ; Poly, J. ; Chemtob, A. RAFT-Photomediated PISA in Dispersion : Mechanism, Optical Properties and Application in Templated Synthesis. Polym. Chem. 2019, 10, 2316. 10.1039/C9PY00209J
A. Airoudj, F. Bally-Le Gall, P.Kunemann, V. Roucoules*
*Contact : firstname.lastname@example.org
A plasma produces a wide range of species (molecules, atoms, radicals) in many energetic states (ionized, excited, metastable and fundamental states). These precursors can react or self-assemble to form solid polymeric objects with specific properties. Our aim is to understand and control the mechanisms related to the morphogenesis of complex structures induced during plasma polymerization. The challenge comes from the difficulty in identifying the predominant species leading to the formation of organised units and from multi-scale dimensions of these systems for which chemical and physical phenomena can occur at different spatial and temporal scales.
Reprinted with permission from Brioude, M. M., Laborie, M.-P., Airoudj, A., Haidara, H. and Roucoules, V. (2014), Controlling the Morphogenesis of Needle-Like and Multibranched Structures in Maleic Anhydride Plasma Polymer Thin Films. Plasma Process. Polym., 11 : 943–951. doi:10.1002/ppap.201400057.
Reprinted with permission from P. Samyn, M.-P. Laborie, A. P. Mathew, A. Airoudj, H. Haidara, and V. Roucoules, Metastable Patterning of Plasma Nanocomposite Films by Incorporating Cellulose Nanowhiskers, Langmuir 2012 28 (2), 1427-1438, DOI : 10.1021/la202503h. Copyright 2012 American Chemical Society.
Brioude, M.D., Laborie, M.P., Airoudj, A., Haidara, H. and Roucoules, V., Plasma processes and polymers 2014, 11, 943 DOI : 10.1002/ppap.201400057
Brioude, M.M., Laborie, M.P., Haidara, H. and Roucoules, V., Plasma Processes and Polymers 2015, 12, 1220 DOI : 10.1002/ppap.201400224
Brioude, M.M., Roucoules, V., Haidara, H., Vonna, L. and Laborie, M.-P., ACS Appl. Mater. Interfaces 2015, 7, 14079. DOI : 10.1021/acsami.5b03302
Fabrication of smart interfaces
A. Airoudj, K. Anselme, F. Bally-Le Gall*, T. Petithory, V. Roucoules
*Contact : email@example.com
The fabrication of functional coatings responding to a (thermal or mechanical) stimulus provides smart properties to the surface of the material. Therefore, the interactions of the latter with its environment can be controlled without changing its formulation. The design of such smart interfaces can be assisted by plasma polymerization and post-modification of functional polymer coatings. For instance, the control of interfacial reactivity has enabled the production of reversible covalent adhesion between two substrates. A simple temperature change enables to assemble or disassemble materials via a plasma polymer functionalized with Diels-Alder reactive groups.
ANR JCJC INTHERMO (smart INterfaces with THERMO-reversible properties) 2016-2019
Projet Idex avec l’Université de Strasbourg (collaboration avec Pr. Pierre Schaaf) 2015-2017
Bacharouche, J., Badique, F., Fahs, A., Spanedda, M.V., Geissler, A., Malval, J.-P., Vallat, M.-F., Anselme, K., Francius, G., Frisch, B., Hemmerlé, J., Schaaf, P. and Roucoules, V. ACS Nano 2013, 7, 3457 DOI : 10.1021/nn400356p
Design of antibacterial surfaces
A. Airoudj, P. Kunemann, V. Roucoules
*Contact : firstname.lastname@example.org
Our research activities for the development of new antibacterial surfaces rely on both preventive and bactericidal approaches. We aim to achieve high performances in terms of durability of the properties (resistance to ageing, long-term delivery of an active substance) and health and environmental risks (control of the nano-objects, of the delivered doses). What makes our materials and coatings unique is that we favour new antibacterial preventive strategies (e.g. specific mechanical properties) and bactericidal, stimuli-responsive strategies to avoid or restrict delivery of antibacterial but toxic molecules to necessary doses. Both approaches can also be coupled for improved antibacterial performances.
N. Cottenye, K. Anselme, L. Ploux, C. Vebert‐Nardin, Adv. Funct. Mater., 22 : 4891–4898 (2012) DOI :10.1002/adfm.201200988
E. Kulaga, L. Ploux, L. Balan, G. Schrodj, V. Roucoules, Plasma Process. Polym. Vol. 11, pp. 63-79 (2014) DOI :10.1002/ppap.201300091
E. Kulaga, L. Ploux, V. Roucoules, Polymer Degradation and Stability Vol. 116(0), pp. 1-13 (2015) DOI :10.1016/j.polymdegradstab.2015.02.011
(low pressure and atmospheric pressure)
Irradiation sources(UV, LED…)
UV-visible absorption spectrophotometers
Setup for laser flash photolysis (LFP)
Spectrometer for electron paramagnetic resonance (EPR)
Size exclusion chromatographs
Equipments for microbiological culture
Automatic applicator bar coaters and flexo
Leica JungLN20 Microtome
Optical emission spectrometer
Horizontal low pressure plasma reactor
Horizontal low pressure plasma reactor
Rotative low pressure plasma reactor
Atmospheric pressure plasma reactor
Low pressure plasma reactor for surface activation
Institut Charles Sadron (Strasbourg, France)
Institut Jean-Lamour (Nancy, France)
Institut de Chimie Radicalaire (Marseille, France)
University of Pittsburgh (Etats-Unis)
Albert-Ludwigs-Universität Freiburg (Allemagne)
Luxembourg Institute of Science and Technology (Luxembourg)
Huaiyin Institute of Technology (Chine)
Quantapplic CEO (Germany)
Carmegie Mellon University (Etats-Unis)