Title :

Isoprene-Styrene Chain Shuttling Copolymerization Mediated by a Lanthanide Half-Sandwich Complex and a Lanthanidocene: Straightforward Access to a New Type of Thermoplastic Elastomers

Author(s) :

Valente, Andreia [Auteur]
Stoclet, Grégory [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Bonnet, Fanny [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Mortreux, Andre [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Visseaux, Marc [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Zinck, Philippe [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Journal title :

Angewandte Chemie International Edition

Volume number :

53

Pages :

4638-4641

Publication date :

2014

English keyword(s) :

Chain Shuttling
Coordinative Chain Transfer Polymerization
Block Copolymers
Copolymerization

HAL domain(s) :

Sciences de l'ingénieur [physics]/Matériaux
Sciences de l'ingénieur [physics]/Génie des procédés
Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

A lanthanide half-sandwich complex and a ansa lanthanidocene have been assessed for isoprene–styrene chain shuttling copolymerization with n-butylethylmagnesium (BEM). In the presence of 1 equiv BEM, a fully amorphous ...
Show more >A lanthanide half-sandwich complex and a ansa lanthanidocene have been assessed for isoprene–styrene chain shuttling copolymerization with n-butylethylmagnesium (BEM). In the presence of 1 equiv BEM, a fully amorphous multiblock microstructure of soft and hard segments is achieved. The microstructure consists of poly(isoprene-co-styrene) blocks, with hard blocks rich in styrene and soft blocks rich in isoprene. The composition of the blocks and the resulting glass transition temperatures (Tg) can be easily modified by changing the feed and/or the relative amount of the catalysts, highlighting a new class of thermoplastic elastomers (TPEs) with tunable transition temperatures. The materials self-organize into nanostructures in the solid state.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA
Centrale Lille
Univ. Artois

Collections :

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

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2019-05-16T16:01:18Z
2021-06-17T14:57:35Z
2021-10-15T08:36:27Z