Precision Synthesis of Poly(Ionic Liquid)-Based Block Copolymers by Cobalt-Mediated Radical Polymerization and Preliminary Study of Their Self-Assembling Properties
COUPILLAUD, Paul
Laboratoire de Chimie des Polymères Organiques [LCPO]
Univ Basque Country UPV EHU, Joxe Mari Korta Ctr, POLYMAT
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Laboratoire de Chimie des Polymères Organiques [LCPO]
Univ Basque Country UPV EHU, Joxe Mari Korta Ctr, POLYMAT
COUPILLAUD, Paul
Laboratoire de Chimie des Polymères Organiques [LCPO]
Univ Basque Country UPV EHU, Joxe Mari Korta Ctr, POLYMAT
Laboratoire de Chimie des Polymères Organiques [LCPO]
Univ Basque Country UPV EHU, Joxe Mari Korta Ctr, POLYMAT
AISSOU, Karim
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
FLEURY, Guillaume
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
VIGNOLLE, Joan
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
TATON, Daniel
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Réduire
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Langue
en
Article de revue
Ce document a été publié dans
Macromolecular Rapid Communications. 2014, vol. 35, n° 4, p. 422-430
Wiley-VCH Verlag
Résumé en anglais
A poly(ionic liquid)-based block copolymer (PIL BCP), namely, poly(vinyl acetate)-b-poly(N-vinyl-3-butylimidazolium bromide), PVAc-b-PVBuImBr, is synthesized by sequential cobalt-mediated radical polymerization (CMRP). A ...Lire la suite >
A poly(ionic liquid)-based block copolymer (PIL BCP), namely, poly(vinyl acetate)-b-poly(N-vinyl-3-butylimidazolium bromide), PVAc-b-PVBuImBr, is synthesized by sequential cobalt-mediated radical polymerization (CMRP). A PVAc precursor is first prepared at 30 degrees C in bulk by CMRP of VAc, using bis(acetylacetonato)cobalt(II), Co(acac)(2), and a radical source (V-70). Growth of PVBuImBr from PVAc-Co(acac)(2) is accomplished by CMRP in DMF/MeOH (2:1, v/v). This PIL BCP self-assembles in the sub-micron size range into aggregated core-shell micelles in THF, whereas polymeric vesicles are observed in water, as evidenced by dynamic light scattering (DLS) and transmission electron microscopy (TEM). Thin-solid sample cut from raw materials analyzed by TEM shows an ordered lamellar organization by temperature-dependent synchrotron small-angle X-ray scattering (SAXS). Anion exchange can be accomplished to achieve the corresponding PIL BCP with bis(trifluorosulfonyl)imide (Tf2N-) anions, which also gives rise to an ordered lamellar phase in bulk samples. A complete suppression of SAXS second-order reflection suggests that this compound has a symmetric volume fraction (f approximate to 0.5). SAXS characterization of both di- and triblock PIL BCP analogues previously reported also shows a lamellar phase of very similar behavior, with only an increase of the period by about 8% at 60 degrees C.< Réduire
Mots clés en anglais
THERMAL-PROPERTIES
TRIBLOCK COPOLYMERS
CONDUCTIVITY
ANION-EXCHANGE
DIFFUSION
MICELLES
SCATTERING
block copolymer
CMRP
mesostructure
poly(ionic liquid)
self-assembly
ORDERED PHASE-SEPARATION
IONIC LIQUID
DIBLOCK COPOLYMERS
Origine
Importé de halUnités de recherche