Titre :

Novel hybrid poly(l-lactic acid) from titanium oxo-cluster via reactive extrusion polymerization

Auteur(s) :

Louisy, Elodie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Bellayer, Séverine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Fontaine, Gaelle [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Rozes, Laurence [Auteur]
Bonnet, Fanny [Auteur correspondant]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

European Polymer Journal

Numéro :

122

Pagination :

109238

Éditeur :

Elsevier BV

Date de publication :

2020-01

ISSN :

0014-3057

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

This paper reports the synthesis of novel hybrid poly(lactic acid) by use of a titanium oxo-cluster, acting both as a catalyst and crosslinking agent of the polymer matrix. The already reported oxo-cluster Ti16O16(OEt)32 ...
Lire la suite >This paper reports the synthesis of novel hybrid poly(lactic acid) by use of a titanium oxo-cluster, acting both as a catalyst and crosslinking agent of the polymer matrix. The already reported oxo-cluster Ti16O16(OEt)32 ([Ti]16) was synthesized and screened at the lab-scale as catalyst for the bulk polymerization of L-lactide (L-LA). [Ti]16 was found to be highly active for this reaction as up to 90% conversion in 30 min was obtained, affording PLLAs with Mn up to 65 000 g·mol−1 and relatively narrow dispersities (1.2–1.6). These polymerization reactions were further transposed to reactive extrusion process in which [Ti]16 oxo-cluster kept its high activity, affording hybrid-PLLA materials with Mn close to 58 000 g·mol−1 (some PLLAs could not be dissolved). Electronic microprobe analysis of the resulting hybrid materials confirmed that the titanium oxo-cluster was well dispersed all over the PLLA matrix. Finally, it was shown that the hybrid PLLA containing [Ti]16 display superior dimensional stability under heat than commercial PLLA of same molar mass.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Ingénierie des Systèmes Polymères

Date de dépôt :

2019-11-07T09:12:07Z
2019-11-07T09:17:48Z
2019-11-12T11:57:56Z
2020-01-14T16:32:33Z
2020-11-13T14:24:13Z