Polysaccharide-based microgels by reactive extrusion: Synthesis, structure, and properties

Welcome to the Latest Job Vacancies Site 2025 and at this time we would like to inform you of the Latest Job Vacancies from the UMR CNRS 5223 Ingénierie des matériaux Polymères with the position of Polysaccharide-based microgels by reactive extrusion: Synthesis, structure, and properties - UMR CNRS 5223 Ingénierie des matériaux Polymères which was opened this.

If this job matches your qualifications, please send your application directly through our latest Job site. Indeed, every job is not easy to apply because it must meet several qualifications and requirements that we must meet in accordance with the standard criteria of the Company who are looking for potential candidates to work. Good job information Polysaccharide-based microgels by reactive extrusion: Synthesis, structure, and properties - UMR CNRS 5223 Ingénierie des matériaux Polymères below matches your qualifications. Good Luck: D

Polysaccharide-based microgels by reactive extrusion: Synthesis, structure, and properties Réf ABG-128297 Sujet de Thèse 02/02/2025 Contrat doctoral UMR CNRS 5223 Ingénierie des matériaux Polymères Lieu de travail Saint Etienne - Auvergne-Rhône-Alpes - France Intitulé du sujet Polysaccharide-based microgels by reactive extrusion: Synthesis, structure, and properties Champs scientifiques

• Chimie
• Sciences de lingénieur

Mots clés Polymer, microgel, colloids, rheology, chitosan, extrusion, Description du sujet

In cosmetic formulations, the use of bio-based and biodegradable components has become a major challenge, with ambitious goals such as 98% biodegradability set by industry players. However, natural polymers currently present limitations in terms of molar mass and macromolecular architecture, requiring high mass fractions to achieve texturizing properties comparable to fossil-based microgels such as Carbomers. Polysaccharide-based microgels, while promising due to their biodegradability and rheological properties, are currently produced through multi-step and complex processes, which is unsuitable for large-scale production.

In this context, this thesis project aims to explore several macromolecular engineering strategies to develop bio-based and biodegradable microgels using an innovative process, reactive extrusion, and to characterize their rheological and structural properties. To increase the molar mass by branching polysaccharides (alginate, chitosan, hyaluronic acid), a straightforward, efficient, and by-product-free chemistry will be implemented, coupled with controlled flows. Specifically, two complementary strategies, called “Bottom-up” and “Top-down”, will address several fundamental questions. This experimental work will focus on understanding the effect of these strategies on the structure, rheological properties, biodegradability of the microgels, and the underlying physics. In fine, these results will open new perspectives for producing polysaccharide-based microgels via a robust and sustainable process.

This project will be integrated within the laboratory IMP (Université Jean Monnet). The IMP team is renowned for his research activities in polymer science, with important facilities. Its main research aim is to establish and to control relationships between chemistry, structure, rheology, and processing.

Prise de fonction : 01/09/2025 Nature du financement Contrat doctoral Précisions sur le financement Présentation établissement et labo daccueil UMR CNRS 5223 Ingénierie des matériaux Polymères

The Polymer Materials Engineering Laboratory (Ingénierie des Matériaux Polymères, IMP, UMR CNRS 5223) is a mixed research unit involving the CNRS and three higher education and research institutions: the Lyon INSA, Claude Bernard Lyon 1 University and Jean Monnet Saint-Etienne University. The IMP laboratory brings together nearly 200 people, including 83 permanent staff and more than 110 doctoral and post-doctoral students. The Laboratory has a unique set of skills covering the entire value chain in the field of polymer materials. The strength of the IMP lies in its ability to coordinate scientific knowledge and the means to implement a multi-scale and multi-disciplinary engineering approach by assembling fundamental building blocks from the chemistry and physics of polymers involved in implementation processes in the laboratory, but also at the pilot scale to design polymer materials with a controlled architecture, respectful of the environment and with functionalities.

Site web : https://imp-umr5223.cnrs.fr/ Intitulé du doctorat Chimie et Science des Matériaux Pays dobtention du doctorat France Etablissement délivrant le doctorat UNIVERSITE JEAN MONNET SAINT-ETIENNE Ecole doctorale Sciences, ingénierie, santé Profil du candidat

Highly motivated students with a Master/Ingénieur degree, or equivalent, in the field of polymer or colloids science (physical-chemistry) are encouraged to apply. A prior knowledge on polysaccharides, rheology or extrusion will be also appreciated. Excellent writing and oral communication skills.

Date limite de candidature 15/03/2025

Information :

• Company : UMR CNRS 5223 Ingénierie des matériaux Polymères
• Position : Polysaccharide-based microgels by reactive extrusion: Synthesis, structure, and properties
• Location : Saint-Étienne ()
• Country : FR

How to Submit an Application:

After reading and knowing the criteria and minimum requirements for qualifications that have been explained from the Polysaccharide-based microgels by reactive extrusion: Synthesis, structure, and properties job info - UMR CNRS 5223 Ingénierie des matériaux Polymères Saint-Étienne () above, thus jobseekers who feel they have not met the requirements including education, age, etc. and really feel interested in the latest job vacancies Polysaccharide-based microgels by reactive extrusion: Synthesis, structure, and properties job info - UMR CNRS 5223 Ingénierie des matériaux Polymères Saint-Étienne () in 2025-02-03 above, should as soon as possible complete and compile a job application file such as a job application letter, CV or curriculum vitae, FC diploma and transcripts and other supplements as described above, in order to register and take part in the admission selection for new employees in the company referred to, sent via the Next Page link below.