Academic Journal
Carbonatation of [ethylene–glycidyl methacrylate]-based copolymers with carbon dioxide as a reagent: from batch to solvent-free reactive extrusion
| العنوان: | Carbonatation of [ethylene–glycidyl methacrylate]-based copolymers with carbon dioxide as a reagent: from batch to solvent-free reactive extrusion |
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| المؤلفون: | Guerdener, Bruno, Ayzac, Virgile, Norsic, Sébastien, Besognet, Paul, Bounor-Legaré, Véronique, Monteil, Vincent, Dufaud, Véronique, Raynaud, Jean, Chalamet, Yvan |
| المساهمون: | Catalyse, Polymérisation, Procédés et Matériaux (CP2M), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 1463-9262. |
| بيانات النشر: | HAL CCSD Royal Society of Chemistry |
| سنة النشر: | 2023 |
| المجموعة: | HAL Lyon 1 (University Claude Bernard Lyon 1) |
| مصطلحات موضوعية: | [CHIM]Chemical Sciences |
| الوصف: | International audience ; The carbonatation of semi-crystalline [ethylene-glycidyl methacrylate]-based polymers (Lotader® grades) was achieved using carbon dioxide as a reagent and quaternary ammonium salts as organocatalysts to transform the polymers' epoxide pendant groups into cyclic carbonate moieties. A batch reactor allowed us to assess the kinetics, dependence on a catalyst and overall potential of this carbonatation. The influence of the ammonium salt composition (anion/cation) was studied in toluene at 110 °C to circumvent the high melting temperatures of these ethylene unit-rich copolymers and obtain a homogeneous medium. The amount of catalyst, CO 2 pressure and temperature were also optimized (TBAB, 5 mol% vs. epoxy content, 4.0 MPa, 110 °C) to allow for quantitative conversion of epoxides into cyclic carbonates. Subsequently, the reaction was transposed, for the 1 st time, to reactive extrusion under CO 2 using a dedicated co-rotating twin-screw extruder to allow for CO 2 containment within the polymer melt. This solvent-free reactive process is perfectly adapted to semi-crystalline and/or high-T g polymers. After optimization, a yield of up to 78% of cyclic carbonate, in addition to orthogonal epoxide, could be obtained with THAB (7.5 mol% vs. epoxy content, ∼30 g h −1 of cat.) at 150 °C with an industry-compliant polymer flow rate of 2 kg h −1. The respective reactivities of Lotader® grades were compared in batch and in an extruder, unveiling this trend towards carbonatation: AX8840 < AX8700 < AX8900. Sustainability and enhanced productivity of the carbonatation methodology developed herein relies on the use of CO 2 as a C1 reagent for the functionalization of epoxide-bearing polymers harnessing a continuous and clean reactive extrusion process allowing, in a single operation and a few minutes, the production of functional polymers at the kilogram scale under solvent-free conditions. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | hal-04251828; https://hal.science/hal-04251828; https://hal.science/hal-04251828/document; https://hal.science/hal-04251828/file/Green%20Chemistry%202023.pdf |
| DOI: | 10.1039/d3gc01127e |
| الاتاحة: | https://hal.science/hal-04251828 https://hal.science/hal-04251828/document https://hal.science/hal-04251828/file/Green%20Chemistry%202023.pdf https://doi.org/10.1039/d3gc01127e |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.610DE01E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1039/d3gc01127e |
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