Lactide Lactone Chain Shuttling Copolymerization Mediated by an Aminobisphenolate Supported Aluminum Complex and Al(OiPr)3: Access to New Polylactide Based Block Copolymers - Université de Lille Accéder directement au contenu
Article Dans Une Revue Journal of the American Chemical Society Année : 2021

Lactide Lactone Chain Shuttling Copolymerization Mediated by an Aminobisphenolate Supported Aluminum Complex and Al(OiPr)3: Access to New Polylactide Based Block Copolymers

Résumé

The chain shuttling ring-opening copolymerization of L-lactide with epsilon-caprolactone has been achieved using two aluminum catalysts presenting different selectivities and benzyl alcohol as chain transfer agent. A newly synthesized aminobispheno-late supported aluminum complex affords the synthesis of lactone rich poly(L-lactide-co-lactone) statistical copolymeric blocks, while Al(OiPr)3 produces semi-crystalline poly(L-lactide) rich blocks. Transalkoxylation is shown to operate efficient-ly. The crystalline ratio and glass transition temperatures of these new class of polylactide based block copolymers can be tuned by adjusting the catalysts and the comonomers ratio.
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Dates et versions

hal-03474097 , version 1 (13-11-2023)

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Julie Meimoun, Choltirosn Sutapin, Gregory Stoclet, Audrey Huret, Pascal Roussel, et al.. Lactide Lactone Chain Shuttling Copolymerization Mediated by an Aminobisphenolate Supported Aluminum Complex and Al(OiPr)3: Access to New Polylactide Based Block Copolymers. Journal of the American Chemical Society, 2021, Journal of the American Chemical Society, 143 (50), pp.21206-21210. ⟨10.1021/jacs.1c09744⟩. ⟨hal-03474097⟩
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