ESPCI web site
PMMH’s weekly seminar is held every Friday at 11 am (map)
Stéphane Perrard
Etienne Reyssat
Virgile Thiévenaz
PMMH
BARRE CASSAN
BAT A 1ER ETAGE CASE 18
7 QUAI SAINT BERNARD
75005 PARIS
France
Tel : (33) 1 40 79 45 22
Séminaire PMMH, Joshua Dijksman (UVA)
Covalent adaptable polymer networks provide mechanical tunability via molecular and mesoscopic lengthscales
Polymeric materials are ubiquitous in society but also present a large source of waste. There is an ongoing search for polymeric materials that can be better tuned and recycled. One class of polymers that came into the spotlight for this purpose are so-called covalent adaptable polymer networks. Such polymer networks are dynamic due to the reversible nature of some of the bonds. We demonstrate that fine-grained, quantitative control over macroscopic dynamic material properties can be achieved in such materials using the Hammett equation that controls the strength of the dynamic bonds. Moreover, we reveal with Raman spectroscopy that mesoscopic phase separation occurs in these materials. The phase separation can be controlled via concentration and molecular design. The mechanisms of phase separation in dynamic polymer networks are particularly interesting as the reversible nature of the network participates in the structuring of the micro- and macromolecular domains, for which theoretical development is still largely incomplete.
The audience is composed of people with rather heterogeneous backgrounds including specialists in solids, fluids, granular flows, statistical physics... so the idea is to keep your talk understandable by people not necessarily working in your field... The seminar time slot runs from 11am to noon so the best is to make the talk last around 45 minutes to leave some time for discussion.
- Séminaires ESPCI-ENS de biophysique
- Séminaires du Département de Physique de l’ENS
- Séminaires du Laboratoire d’Hydrodynamique de l’X
- Séminaire de Mécanique d’Orsay (page web FAST)
- Séminaire de Mécanique d’Orsay (page web LIMSI)
- Séminaire de Mécanique des Fluides de l’Institut Jean le Rond d’Alembert
- Séminaires du laboratoire MSC, Paris VII
- Séminaires Gulliver
Link to cofee seminar (internal, every Thursday)
