One-pot syntheses of heterotelechelic α-vinyl,ω-methoxysilane polyethylenes and condensation into comb-like and star-like polymers with high chain end functionality - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Polymer Chemistry Année : 2020

One-pot syntheses of heterotelechelic α-vinyl,ω-methoxysilane polyethylenes and condensation into comb-like and star-like polymers with high chain end functionality

Douriya Khedaioui
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Benjamin Burcher
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David Gajan
Damien Montarnal
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Christophe Boisson
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Résumé

A one-pot synthesis method for various α-vinyl,ω-methoxysilyl polyethylene oligomers with well-defined lengths and high end-group functionalities and crystallinities is presented. This method relies on the combination of catalyzed chain growth of ethylene in the presence of a di(alkenyl)magnesium chain transfer agent and a neodymocene complex, followed by efficient deactivation using a variety of silane reagents: trimethoxymethylsilane, trimethoxyvinylsilane and tetramethoxysilane. Further condensation of the ω-methoxysilyl groups of these polymers in active medium (toluene/acetic acid mixture) leads to complex architectures such as comb-like structures or star-like structures that combine high vinyl functionality at extremities with a high crystallinity.

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Chimie Matériaux
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Dates et versions

hal-02972738 , version 1 (12-11-2020)

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Douriya Khedaioui, Benjamin Burcher, David Gajan, Damien Montarnal, Franck d'Agosto, et al.. One-pot syntheses of heterotelechelic α-vinyl,ω-methoxysilane polyethylenes and condensation into comb-like and star-like polymers with high chain end functionality. Polymer Chemistry, 2020, 11 (23), pp.3884-3891. ⟨10.1039/d0py00638f⟩. ⟨hal-02972738⟩

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