ESR02 - University Claude Bernard Lyon 1, Lyon, France
Title: Processing and chemical modification of polyolefin vitrimers by reactive extrusion
Objective:
Develop the synthesis of polyolefin vitrimers by reactive extrusion. Study processing conditions and characterize network structure (crosslink density, solvent resistance, swelling and extractibles) as well as their viscoelastic, reprocessing/recycling and thermomechanical properties. Investigate the multiscale structuration and exchange dynamics in line with phase separation. Quantify and compare properties and performances of the obtained materials with benchmark polyolefin-based materials widely used in multiple segments such as automotive, packaging and transportation industries.
Expected results:
Synthesis and characterization of new polyolefin vitrimers carrying a variety of functional groups amenable to dynamic crosslinking. Several macromolecular strategies relying on the synthesis or commercial sourcing of a library of crosslinkers containing exchangeable groups will be carried out. A first screening of these innovative approaches will involve solvent-based reactions. Scale-up of best systems will be carried out in twin-screw extruders and recirculating microcompounders. The viscoelastic behaviour and exchange dynamics of these materials will be investigated with regard to their possible phase-separation. Their melt strength, creep and solvent resistance performances will be compared to polyolefin grades typically used a wide range of industrial applications.
Supervisors
 |
 |
| Pr. Eric Drockenmuller |
Dr. Damien Montarnal |
Secondments
 |
 |
| ESPCI - Paris, France |
SABIC - Geleen, The Netherlands |
Location
 |
|
Laboratory of Chemistry, Catalysis, Polymers and Processes (C2P2)
4, rue Victor Grignard - 69616 Villeurbanne - France
|
|
