Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique
UMR 5623

Séminaire par Vincent LADMIRAL

Lundi 2 Décembre 2019 - 14h00 - Salle Maroni / MHT

Vincent LADMIRAL, Chargé de Recherches CNRS à l'ICGM , fera une présentation intitulée: "Synthesis and self-assembly of PVDF-based block copolymers"

Polyfluoroolefins such as polyvinylidene fluoride (PVDF) and its copolymers are an important class of semi-crystalline high added-value polymers, owing to their uncommon properties of chemical and ageing resistance as well as their superior electroactivity.1 The preparation of well-defined polyfluoroolefin-based architectures such as block copolymers is not easy due to the peculiar reactivity of the fluorinated monomers. Recent studies of the RAFT polymerization of VDF showed how this chemistry could be harnessed to synthesize a large range of original block copolymers (BCP).2,3 However, amphiphilic PVDF-based block copolymers are still very rare.4 This communication will present recent advances in the macromolecular engineering of VDF-based materials allowing the preparation of amphiphilic di- and triblock copolymers. It will also show how these semicrystalline BCP can self-assemble in solution to form unprecedented higher-order morphologies via crystallization-driven self-assembly (Figure 1).

Figure 1. TEM images of the P(VDF-co-HFP)-b-PEG-b-P(VDF-co-HFP) triblock copolymer self-assembled structures in DMF (a and b) and in acetone (c)

 

2019 IMRCP