Published on July 10, 2025 Updated on July 10, 2025
ANR PhD Position– ICCF (Photochemistry Team – POPPI Group, Université
Clermont Auvergne) in collaboration with LPIM (P2M Group, Université de
Haute Alsace)
Context
When subjected to environmental factors (heat, light, oxygen, etc.), polymers age, resulting in an irreversible modification of their functional properties (mechanical, optical, barrier, etc.). This is caused by changes in their chemical structure (particularly through oxidation reactions) and their macromolecular architecture (chain scission, crosslinking, chemi-crystallization). The (photo)ageing of polymers is traditionally studied through a multi-scale analysis, correlating changes in chemical structure (IR and UV-visible spectroscopies), macromolecular architecture (gel fraction, thermoporosimetry, DMA, etc.), and properties (thermal, mechanical, and permeability analyses, etc.).

Thesis supervisors :
Dr. Julien CHRISTMANN (As. Prof. UCA) – julien.christmann@uca.fr (ICCF)
Dr. Sandrine THERIAS (DR CNRS) – sandrine.therias@uca.fr (ICCF)
Pr. Christian LEY (Prof. UHA) – christian.ley@uha.fr (LPIM)

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