From Molecule to Material: How Support Changes Heterobimetallic Catalysts in Lactide Polymerization

Sustainable production of polylactide demands catalysts that are both recoverable and capable of delivering precise molar mass and stereocontrol. A series of heterobimetallic complexes [(THF)NaFe(OtBu)<sub>3</sub>]<sub>2</sub>, [(THF)<sub>2</sub>KFe(OtBu)<sub>3</sub>]<sub>2</sub>, [KZn(OtBu)<sub>3</sub>]<sub>2</sub>, [(THF)KCu(OtBu)<sub>3</sub>]<sub>∞</sub> and [(THF)KCo(OtBu)<sub>3</sub>]<sub>2</sub> was evaluated as precursors for heterogeneous catalysts by grafting onto dehydroxylated silica. All complexes demonstrated activity in the ring-opening polymerization of lactide. Notably, the silica-supported [(THF)KFe(OtBu)<sub>2</sub>]<sub>/</sub>SiO<sub>2-700</sub> and [(THF)NaFe(OtBu)<sub>2</sub>]<sub>/</sub>SiO<sub>2-700</sub> systems exhibited high efficiency, promising recyclability, and afforded predictable molar masses (M<sub>n,exp</sub> close to M<sub>n,th</sub>) with narrow dispersities. These findings highlight new opportunities for designing recyclable catalysts for sustainable PLA synthesis.

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Publication Details

Journal
Macromolecular Rapid Communications
Published
2025-12-05
DOI
https://doi.org/10.1002/marc.202500805
Primary Topic
biodegradable polymer synthesis and properties
Type
article
Field-Weighted Citation Impact
0.00

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article

From Molecule to Material: How Support Changes Heterobimetallic Catalysts in Lactide Polymerization

Y. Nasiru, Aimery De Mallmann, Mostafa Taoufik, A Isah et al.
Macromolecular Rapid Communications
biodegradable polymer synthesis and properties
article

From Molecule to Material: How Support Changes Heterobimetallic Catalysts in Lactide Polymerization

Y. Nasiru, Aimery De Mallmann, Mostafa Taoufik, A Isah, Régis Michaël Gauvin, C.M. Thomas, Fan Yang
article en

Abstract

Sustainable production of polylactide demands catalysts that are both recoverable and capable of delivering precise molar mass and stereocontrol. A series of heterobimetallic complexes [(THF)NaFe(OtBu)<sub>3</sub>]<sub>2</sub>, [(THF)<sub>2</sub>KFe(OtBu)<sub>3</sub>]<sub>2</sub>, [KZn(OtBu)<sub>3</sub>]<sub>2</sub>, [(THF)KCu(OtBu)<sub>3</sub>]<sub>∞</sub> and [(THF)KCo(OtBu)<sub>3</sub>]<sub>2</sub> was evaluated as precursors for heterogeneous catalysts by grafting onto dehydroxylated silica. All complexes demonstrated activity in the ring-opening polymerization of lactide. Notably, the silica-supported [(THF)KFe(OtBu)<sub>2</sub>]<sub>/</sub>SiO<sub>2-700</sub> and [(THF)NaFe(OtBu)<sub>2</sub>]<sub>/</sub>SiO<sub>2-700</sub> systems exhibited high efficiency, promising recyclability, and afforded predictable molar masses (M<sub>n,exp</sub> close to M<sub>n,th</sub>) with narrow dispersities. These findings highlight new opportunities for designing recyclable catalysts for sustainable PLA synthesis.

Macromolecular Rapid CommunicationsVol. 47(4)
Université Claude Bernard Lyon 1 (FR), Centre National de la Recherche Scientifique (FR), Chimie ParisTech - PSL (FR), Université Paris Sciences et Lettres (FR), Institut de Recherche de Chimie Paris (FR), École d'Ingénieurs en Chimie et Sciences du Numérique (FR)
European Synchrotron Radiation Facility, China Scholarship Council, Centre National de la Recherche Scientifique
Openalex Percentile: Top 73%
biodegradable polymer synthesis and properties
DOIOpen Access PDFOpenAlex
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