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Polystyrene Hybrid-Vitrimer Based on the Hemiacetal Ester Exchange Reaction

Boucher, David and Madsen, Jeppe and Yu, Liyun and Huang, Qian and Caussé, Nicolas and Pébère, Nadine and Ladmiral, Vincent and Negrell, Claire Polystyrene Hybrid-Vitrimer Based on the Hemiacetal Ester Exchange Reaction. (2021) Macromolecules, 54 (14). 6772-6779. ISSN 0024-9297

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Official URL: https://doi.org/10.1021/acs.macromol.1c00948

Abstract

Vitrimer materials, which are permanently cross-linked but reshapable polymers, are a class of materials of growing interest due to their potential in recycling and sustainable development. More precisely, vitrimers derived from commodity polymers could have a drastic impact on plastic consumption in the upcoming years. Here, the development of a polystyrene-based vitrimer harnessing the recently discovered hemiacetal ester exchange reaction of carboxylic acid is presented. 1,4-Cyclohexanedimethanol divinyl ether was reacted with 4-vinylbenzoic acid (VBA) to form a divinyl species containing two hemiacetal ester functions. This dimer was then copolymerized with styrene, butyl acrylate, and VBA to form a cross-linked material presenting pendent acid groups. This material exhibited three distinct behaviors at different temperature regimes: below 80 °C, despite the exchange reactions able to occur at this temperature, the cross-linked material behaved as a frozen material due to the hydrogen bonding formed by the carboxylic acid pendent groups. Between 80 and 130 °C, the vitrimer behavior was demonstrated by rheological creep experiments. At higher temperatures, the dissociation of the hemiacetal ester groups led to the loss of the covalent cross-linking.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Technical University of Denmark (DENMARK)
Other partners > Université de Montpellier (FRANCE)
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Deposited On:03 Nov 2021 08:15

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