The objective of this Master 2 project is to prepare and characterize polymeric Janus nanocylinders (JNC) and to evaluate their performance in stabilizing water-in-oil emulsions. Amphiphilic JNC will be synthesized via supramolecular assembly of functional polymeric building blocks using strong and cooperative hydrogen bonding, following established procedures. The synthesis of these polymers—already achieved by our collaborators in Paris (L. Bouteiller, S. Pensec, J. Rieger)— is not part of the present internship. The nanocylinders will be characterized in aqueous and/or organic phases using light and neutron scattering and transmission electron microscopy. Their efficiency in stabilizing emulsions will be assessed through macroscopic observation, turbidimetry (under normal and accelerated gravity), and confocal microscopy.
The study will focus on understanding how various parameters — such as the oil phase composition, polymer structure, nanocylinder concentration, water/oil ratio, temperature, ionic strength, and emulsification method — influence droplet size distribution, emulsion stability, and coalescence behavior. Results will be interpreted in relation to the structure of the JNC, the affinity of the polymer arms towards each phase, as well as measurements of interfacial tension with and without JNC. This internship will serve as a gateway to a PhD thesis continuing the CASCADUS project. A motivated and high-performing M2 student will have an excellent opportunity to be selected for the subsequent PhD position.
Publié le 11/11/2025