Anionic polymerization of butadiene by dialkylmagnesium / alkali metal alkoxide systems in apolar medium: Polybutadiene microstructure and polymerization control - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Polymer Année : 2020

Anionic polymerization of butadiene by dialkylmagnesium / alkali metal alkoxide systems in apolar medium: Polybutadiene microstructure and polymerization control

Résumé

Lithium based anionic polymerization of butadiene in apolar media allows the obtention of polybutadiene with a high vinyl content by using polar modifier or alkali metal alkoxide. For instance, butadiene polymerization with alkyllithium and potassium tert-pentoxide produces polybutadiene with 50% of vinyl content. The aim of this paper is to develop an approach without any alkyllithium moieties in order to synthesize polybutadiene with a high vinyl content (50%–70%) in a controlled way. To do so bi-metallic systems based on di-n-butylmagnesium in association with potassium or sodium tert-pentoxide were studied in apolar medium. The influence of parameters such as the initiator preformation time and the [Mt]/[Mg] ratio were assessed (Mt = K, Na). The potassium tert-pentoxide-based system was found to produce polybutadienes in a controlled way with 50% of vinyl content, while polybutadienes with up to 70% of vinyl content were obtained in a controlled way with Na based systems.

Domaines

Chimie Polymères
Fichier principal
Vignette du fichier
S0032386120306911.pdf (382.68 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03491334 , version 1 (22-08-2022)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Antoine Forens, Kevin Roos, Benoit Gadenne, Stéphane Carlotti. Anionic polymerization of butadiene by dialkylmagnesium / alkali metal alkoxide systems in apolar medium: Polybutadiene microstructure and polymerization control. Polymer, 2020, 205, pp.122864. ⟨10.1016/j.polymer.2020.122864⟩. ⟨hal-03491334⟩

Collections

CNRS INC-CNRS LCPO
30 Consultations
74 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More