Titre :

“One-pot” aminolysis/thia-Michael addition preparation of well-defined amphiphilic PVDF- b -PEG- b -PVDF triblock copolymers: self-assembly behaviour in mixed solvents

Auteur(s) :

Folgado, Enrique [Auteur]
Guerre, Marc [Auteur]
Da Costa, Antonio [Auteur]
Ferri, Anthony [Auteur]
UCCS Équipe Couches Minces & Nanomatériaux
Addad, Ahmed [Auteur]
Ladmiral, Vincent [Auteur]
Semsarilar, M. [Auteur]

Titre de la revue :

Polymer Chemistry

Numéro :

11

Pagination :

401-410

Éditeur :

Royal Society of Chemistry - RSC

Date de publication :

2020-01-02

ISSN :

1759-9954

Discipline(s) HAL :

Chimie

Résumé en anglais : [en]

Polyvinylidene fluoride-(PVDF) containing block copolymers are scarce and difficult to prepare. Amphiphilic block copolymers containing PVDF have been rarely reported. In consequence, few studies of the self-assembly of ...
Lire la suite >Polyvinylidene fluoride-(PVDF) containing block copolymers are scarce and difficult to prepare. Amphiphilic block copolymers containing PVDF have been rarely reported. In consequence, few studies of the self-assembly of PVDF-based block copolymers exist. Here a new synthetic route to prepare poly(vinylidene fluoride)-block-poly(ethylene glycol)-block-poly(vinylidene fluoride) (PVDF-b-PEG-b-PVDF) ABA triblock copolymer is presented. The synthesis relies on the efficient coupling of a PVDF prepared by RAFT and a PEG diacrylate in one pot via aminolysis of the xanthate moiety and subsequent thia-Michael addition. The novel amphiphilic triblock copolymer was fully characterized by 1 H and 19 F NMR spectroscopies, GPC, TGA, DSC and XRD; and its self-assembly in water and ethanol was studied. Micellization (addition of a selective solvent for PVDF to a solution of the triblock) and nanoprecipitation (addition of a solution of the triblock into a non solvent of PVDF) protocols led to the formation of micelles and vesicles. Surprisingly, under nanoprecipitation conditions (in THF\/ ethanol), well-defined crystalline micrometric structures were obtained.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CNRS
Centrale Lille
ENSCL
INRA
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Couches minces & nanomatériaux (CMNM)

Date de dépôt :

2022-03-08T13:50:53Z