YAO, Shenghong; BETHANI, Aikaterini; ZIANE, Nadia; BROCHON, Cyril; FLEURY, Guillaume; HADZIIOANNOU, Georges; POULIN, Philippe; SALMON, Jean-Baptiste; CLOUTET, Eric

doi:10.1021/acs.macromol.5b01632

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YAO, Shenghong
Laboratoire de Chimie des polymères organiques [LCPO]
Laboratoire du Futur [LOF]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

BETHANI, Aikaterini
Laboratoire de Chimie des polymères organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

ZIANE, Nadia
Laboratoire du Futur [LOF]

Langue

Article de revue

Ce document a été publié dans

Macromolecules. 2015, vol. 48, p. pp. 7473-7480

American Chemical Society

Résumé en anglais

Amphiphilic block copolymers composed of a poly(3-hexylthiophene) (P3HT) segment and a sulfonated polystyrene (PS-stat-PSS) sequence with well-defined and easily tunable structure were synthesized through Grignard metathesispolymerization (GRIM), RAFT polymerization and sulfonation of PS. Because of the hydrophilic nature and ionic conductivityof the PSS segment, such copolymer shows good solubility in water and high conductivity ∼1 S/m in form of dry film.Conductivity can be further enhanced with the addition of single-walled nanotubes (SWNTs). The present amphiphilic blockcopolymer enables efficient unbundling and stabilization of SWNTs in water. With the help of an original microfluidic techniquereferred to as microf luidic pervaporation, we investigated the concentration process of SWNT/copolymer suspensions up to dry films and obtained a complete phase diagram which reveals the aggregation of SWNTs during the concentration process in a given concentration range. High conductivity of about 370 S/m is achieved for SWNT/copolymer nanocomposites at highconcentration of SWNTs. The microfluidic pervaporation method is also shown to provide a direct determination of the CNT percolation threshold.< Réduire

Mots clés en anglais

Microfluidique

Diagramme de phases

Nanotube

Polymères conducteurs

URI

https://oskar-bordeaux.fr/handle/20.500.12278/20292

DOI

http://dx.doi.org/10.1021/acs.macromol.5b01632

Project ANR

ANR-10-LABX-0042-AMADEUS - null
IdEx Bordeaux - ANR-10-IDEX-0003-02/10-IDEX-0003

Origine

Importé de hal

Unités de recherche

Laboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629