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Jadhav T, Dhokale B, Saeed ZM, Hadjichristidis N, Mohamed S. Dynamic Covalent Chemistry of Enamine-Ones: Exploring Tunable Reactivity in Vitrimeric Polymers and Covalent Organic Frameworks. CHEMSUSCHEM 2024:e202400356. [PMID: 38842466 DOI: 10.1002/cssc.202400356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 06/05/2024] [Accepted: 06/05/2024] [Indexed: 06/07/2024]
Abstract
Dynamic covalent chemistry (DCC) has revolutionized the field of polymer science by offering new opportunities for the synthesis, processability, and recyclability of polymers as well as in the development of new materials with interesting properties such as vitrimers and covalent organic frameworks (COFs). Many DCC linkages have been explored for this purpose, but recently, enamine-ones have proven to be promising dynamic linkages because of their facile reversible transamination reactions under thermodynamic control. Their high stability, stimuli-responsive properties, and tunable kinetics make them promising dynamic cross-linkers in network polymers. Given the rapid developments in the field in recent years, this review provides a critical and up-to-date overview of recent developments in enamine-one chemistry, including factors that control their dynamics. The focus of the review will be on the utility of enamine-ones in designing a variety of processable and self-healable polymers with important applications in vitrimers and recyclable closed-loop polymers. The use of enamine-one linkages in crystalline polymers, known as COFs and their applications are also summarized. Finally, we provide an outlook for future developments in this field.
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Affiliation(s)
- Thaksen Jadhav
- Department of Chemistry, Green Chemistry & Materials Modelling Laboratory, Khalifa University of Science and Technology, PO Box, Abu Dhabi, 127788, United Arab Emirates
- Center for Catalysis and Separations, Khalifa University of Science and Technology, PO Box, Abu Dhabi, 127788, United Arab Emirates
| | - Bhausaheb Dhokale
- Department of Chemistry, Green Chemistry & Materials Modelling Laboratory, Khalifa University of Science and Technology, PO Box, Abu Dhabi, 127788, United Arab Emirates
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, United States of America
| | - Zeinab M Saeed
- Department of Chemistry, Green Chemistry & Materials Modelling Laboratory, Khalifa University of Science and Technology, PO Box, Abu Dhabi, 127788, United Arab Emirates
- Center for Catalysis and Separations, Khalifa University of Science and Technology, PO Box, Abu Dhabi, 127788, United Arab Emirates
| | - Nikos Hadjichristidis
- Chemistry Program, KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Sharmarke Mohamed
- Department of Chemistry, Green Chemistry & Materials Modelling Laboratory, Khalifa University of Science and Technology, PO Box, Abu Dhabi, 127788, United Arab Emirates
- Center for Catalysis and Separations, Khalifa University of Science and Technology, PO Box, Abu Dhabi, 127788, United Arab Emirates
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2
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Engelen S, Dolinski ND, Chen C, Ghimire E, Lindberg CA, Crolais AE, Nitta N, Winne JM, Rowan SJ, Du Prez FE. Vinylogous Urea-Urethane Vitrimers: Accelerating and Inhibiting Network Dynamics through Hydrogen Bonding. Angew Chem Int Ed Engl 2024; 63:e202318412. [PMID: 38198567 DOI: 10.1002/anie.202318412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 01/12/2024]
Abstract
Vinylogous urethane (VUO ) based polymer networks are widely used as catalyst-free vitrimers that show rapid covalent bond exchange at elevated temperatures. In solution, vinylogous ureas (VUN ) undergo much faster bond exchange than VUO and are highly dynamic at room temperature. However, this difference in reactivity is not observed in their respective dynamic polymer networks, as VUO and VUN vitrimers prepared herein with very similar macromolecular architectures show comparable stress relaxation and creep behavior. However, by using mixtures of VUO and VUN linkages within the same network, the dynamic reactions can be accelerated by an order of magnitude. The results can be rationalized by the effect of intermolecular hydrogen bonding, which is absent in VUO vitrimers, but is very pronounced for vinylogous urea moieties. At low concentrations of VUN , these hydrogen bonds act as catalysts for covalent bond exchange, while at high concentration, they provide a pervasive vinylogous urea - urethane (VU) network of strong non-covalent interactions, giving rise to phase separation and inhibiting polymer chain dynamics. This offers a straightforward design principle for dynamic polymer materials, showing at the same time the possible additive and synergistic effects of supramolecular and dynamic covalent polymer networks.
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Affiliation(s)
- Stéphanie Engelen
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000, Ghent, Belgium
| | - Neil D Dolinski
- Prtizker School of Molecular Engineering at, University of Chicago, IL 60637, Chicago, USA
| | - Chuqiao Chen
- Prtizker School of Molecular Engineering at, University of Chicago, IL 60637, Chicago, USA
| | - Elina Ghimire
- Prtizker School of Molecular Engineering at, University of Chicago, IL 60637, Chicago, USA
| | - Charlie A Lindberg
- Prtizker School of Molecular Engineering at, University of Chicago, IL 60637, Chicago, USA
| | - Alex E Crolais
- Department of Chemistry, University of Chicago, Chicago, IL 60637, USA
| | - Natsumi Nitta
- Prtizker School of Molecular Engineering at, University of Chicago, IL 60637, Chicago, USA
| | - Johan M Winne
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000, Ghent, Belgium
| | - Stuart J Rowan
- Prtizker School of Molecular Engineering at, University of Chicago, IL 60637, Chicago, USA
- Department of Chemistry, University of Chicago, Chicago, IL 60637, USA
| | - Filip E Du Prez
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000, Ghent, Belgium
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3
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Dolinski ND, Tao R, Boynton NR, Kotula AP, Lindberg CA, Petersen KJ, Forster AM, Rowan SJ. Connecting Molecular Exchange Dynamics to Stress Relaxation in Phase-Separated Dynamic Covalent Networks. ACS Macro Lett 2024:174-180. [PMID: 38251912 DOI: 10.1021/acsmacrolett.3c00717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
A suite of phase separated dynamic covalent networks based on highly tunable dynamic benzalcyanoacetate (BCA) thia-Michael acceptors are investigated. In situ kinetic studies on small molecule model systems are used in conjunction with macroscopic characterization of phase stability and stress relaxation to understand how the molecular dynamics relate to relaxation modes. Electronic modification of the BCA unit strongly impacts the exchange dynamics (particularly the rate of dissociation) and the overall equilibrium constant (Keq) of the system, with electron-withdrawing groups leading to decreased dissociation rate and increased Keq. Critically, below a chemistry-defined temperature cutoff (related to the stability of the hard phase domains), the stress relaxation behavior of these phase separated materials is dominated by the molecular exchange dynamics, allowing for networks with a tailored thermomechanical response.
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Affiliation(s)
- Neil D Dolinski
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Ran Tao
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Nicholas R Boynton
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Anthony P Kotula
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Charlie A Lindberg
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Kyle J Petersen
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Aaron M Forster
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Stuart J Rowan
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
- Chemical Science and Engineering Division and Center for Molecular Engineering, Argonne National Laboratory, Lemont, Illinois 60434, United States
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Lan X, Boetje L, Pelras T, Ye C, Silvianti F, Loos K. Lipoic acid-based vitrimer-like elastomer. Polym Chem 2023; 14:5014-5020. [PMID: 38013676 PMCID: PMC10644234 DOI: 10.1039/d3py00883e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 10/19/2023] [Indexed: 11/29/2023]
Abstract
Dynamic covalent networks (DCNs) are materials that feature reversible bond formation and breaking, allowing for self-healing and recyclability. To speed up the bond exchange, significant amounts of catalyst are used, which creates safety concerns. To tackle this issue, we report the synthesis of a lipoic acid-based vitrimer-like elastomer (LAVE) by combining (i) ring-opening polymerization (ROP) of lactones, (ii) lipoic acid modification of polylactones, and (iii) UV crosslinking. The melting temperature (Tm) of LAVE is below room temperature, which ensures the elastic properties of LAVE at service temperature. By carefully altering the network, it is possible to tune the Tm, as well as the mechanical strength and stretchability of the material. An increase in polylactone chain length in LAVE was found to increase strain at break from 25% to 180% and stress at break from 0.34 to 1.41 MPa. The material showed excellent network stability under cyclic strain loading, with no apparent hysteresis. The introduction of disulfide bonds allows the material to self-heal under UV exposure, extending its shelf life. Overall, this work presents an environmentally friendly approach for producing a sustainable elastomer that has potential for use in applications such as intelligent robots, smart wearable technology, and human-machine interfaces.
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Affiliation(s)
- Xiaohong Lan
- Macromolecular Chemistry & New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Laura Boetje
- Macromolecular Chemistry & New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Théophile Pelras
- Macromolecular Chemistry & New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Chongnan Ye
- Macromolecular Chemistry & New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Fitrilia Silvianti
- Macromolecular Chemistry & New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Katja Loos
- Macromolecular Chemistry & New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
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5
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Kassem H, Imbernon L, Stricker L, Jonckheere L, Du Prez FE. Reprocessable Polyurethane Foams Using Acetoacetyl-Formed Amides. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37917002 DOI: 10.1021/acsami.3c12132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Like any other thermosetting material, polyurethane foams (PUFs) contain permanent cross-links that hinder their reprocessability and make their recyclability a tedious and environmentally unfriendly process. Herein, we introduce acetoacetyl-formed amides, formed by the reaction of isocyanates with acetoacetate groups, as dynamic units in the backbone of PUFs. By extensive variation of the foam composition, optimum parameters have been found to produce malleable foams above temperatures of 130 °C, without the requirement of any solvent during the foaming process. The PU cross-linked material can be compression-molded at least three times, giving rise to PU elastomers and thus maintaining a cross-linked network structure. Characterization of the original foams shows comparable properties to standard PUFs, for example, having a density of 32 kg/m3, while they show similar chemical and thermal properties upon reprocessing to strong PU elastomers, exhibiting Tg ranging from -42 to -48 °C. This research provides a straightforward method to produce thermally reprocessable PUFs as a promising pathway to address the recycling issues of end-of-life foams.
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Affiliation(s)
- Hiba Kassem
- Polymer Chemistry Research Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4-bis, 9000 Ghent, Belgium
- Recticel NV, Damstraat 2, Industriezone 7, 9230 Wetteren, Belgium
| | - Lucie Imbernon
- Recticel NV, Damstraat 2, Industriezone 7, 9230 Wetteren, Belgium
| | - Lucas Stricker
- Polymer Chemistry Research Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4-bis, 9000 Ghent, Belgium
| | - Laura Jonckheere
- Recticel NV, Damstraat 2, Industriezone 7, 9230 Wetteren, Belgium
| | - Filip E Du Prez
- Polymer Chemistry Research Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4-bis, 9000 Ghent, Belgium
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6
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Ma X, Wang X, Zhao H, Xu X, Cui M, Stott NE, Chen P, Zhu J, Yan N, Chen J. High-Performance, Light-Stimulation Healable, and Closed-Loop Recyclable Lignin-Based Covalent Adaptable Networks. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303215. [PMID: 37269200 DOI: 10.1002/smll.202303215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/20/2023] [Indexed: 06/04/2023]
Abstract
In this work, high-performance, light-stimulation healable, and closed-loop recyclable covalent adaptable networks are successfully synthesized from natural lignin-based polyurethane (LPU) Zn2+ coordination structures (LPUxZy). Using an optimized LPU (LPU-20 with a tensile strength of 28.4 ± 3.5 MPa) as the matrix for Zn2+ coordination, LPUs with covalent adaptable coordination networks are obtained that have different amounts of Zn. When the feed amount of ZnCl2 is 9 wt%, the strength of LPU-20Z9 reaches 37.3 ± 3.1 MPa with a toughness of 175.4 ± 4.6 MJ m-3 , which is 1.7 times of that of LPU-20. In addition, Zn2+ has a crucial catalytic effect on "dissociation mechanism" in the exchange reaction of LPU. Moreover, the Zn2+ -based coordination bonds significantly enhance the photothermal conversion capability of lignin. The maximum surface temperature of LPU-20Z9 reaches 118 °C under the near-infrared illumination of 0.8 W m-2 . This allows the LPU-20Z9 to self-heal within 10 min. Due to the catalytic effect of Zn2+ , LPU-20Z9 can be degraded and recovered in ethanol completely. Through the investigation of the mechanisms for exchange reaction and the design of the closed-loop recycling method, this work is expected to provide insight into the development of novel LPUs with high-performance, light-stimulated heal ability, and closed-loop recyclability; which can be applied toward the expanded development of intelligent elastomers.
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Affiliation(s)
- Xiaozhen Ma
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Xiaolin Wang
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Honglong Zhao
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Xiaobo Xu
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Minghui Cui
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- School of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning, 110142, China
| | - Nathan E Stott
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Peng Chen
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Jin Zhu
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Ning Yan
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, M5S 3E5, Canada
| | - Jing Chen
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
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7
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Guggari S, Magliozzi F, Malburet S, Graillot A, Destarac M, Guerre M. Vanillin-Based Epoxy Vitrimers: Looking at the Cystamine Hardener from a Different Perspective. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2023; 11:6021-6031. [PMID: 37091125 PMCID: PMC10114092 DOI: 10.1021/acssuschemeng.3c00379] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/16/2023] [Indexed: 05/03/2023]
Abstract
Epoxy vitrimers encompass many advantages compared to traditional epoxy materials such as recyclability, repairability, and reprocessability. These properties are induced by the incorporation of dynamic reversible covalent bonds. Recently, the incorporation of aromatic disulfide bridges that are dynamic has expanded the development of new eco-friendly epoxy materials. Herein, we studied a bio-based aliphatic disulfide based on cystamine as a hardener with a vanillin-derived bio-sourced epoxy to prepare fully bio-based epoxy vitrimers. This article provides a comparative study between cystamine and an aromatic disulfide benchmark hardener issued from petrol resources. This work demonstrated that the presence of this aliphatic hardener has a significant influence not only on the reactivity, but most importantly on the resulting dynamic properties. An interesting yet counterintuitive accelerating effect of the dynamic exchanges was clearly demonstrated with only 2 to 20% of molar fraction of cystamine added to the aromatic disulfide formulation. A similar glass transition was obtained compared to the purely aromatic analogue, but relaxation times were decreased by an order of magnitude.
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Affiliation(s)
- Solène Guggari
- Laboratoire
des IMRCP, CNRS UMR 5623, Université de Toulouse, Université
Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
- SPECIFIC
POLYMERS, Zac Via Domita,
150 Avenue des Cocardières, 34160 Castries, France
| | - Fiona Magliozzi
- SPECIFIC
POLYMERS, Zac Via Domita,
150 Avenue des Cocardières, 34160 Castries, France
| | - Samuel Malburet
- SPECIFIC
POLYMERS, Zac Via Domita,
150 Avenue des Cocardières, 34160 Castries, France
| | - Alain Graillot
- SPECIFIC
POLYMERS, Zac Via Domita,
150 Avenue des Cocardières, 34160 Castries, France
| | - Mathias Destarac
- Laboratoire
des IMRCP, CNRS UMR 5623, Université de Toulouse, Université
Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Marc Guerre
- Laboratoire
des IMRCP, CNRS UMR 5623, Université de Toulouse, Université
Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
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Subramaniyan S, Bergoglio M, Sangermano M, Hakkarainen M. Vanillin-Derived Thermally Reprocessable and Chemically Recyclable Schiff-Base Epoxy Thermosets. GLOBAL CHALLENGES (HOBOKEN, NJ) 2023; 7:2200234. [PMID: 37020622 PMCID: PMC10069320 DOI: 10.1002/gch2.202200234] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/20/2023] [Indexed: 06/19/2023]
Abstract
The paradigm shift from traditional petroleum-based non-recyclable thermosets to biobased repeatedly recyclable materials is required to move toward circular bioeconomy. Here, two mechanically and chemically recyclable extended vanillin-derived epoxy thermosets are successfully fabricated by introduction of Schiff-base/imine covalent dynamic bonds. Thermoset 1 (T1) is based on linear monomer 1 (M1) with two alcohol end groups and one imine bond, while thermoset 2 (T2) is based on branched monomer 2 (M2) with three alcohol end-groups and three imine-groups. Thermosets are obtained by reaction of monomer 1 (M1) and monomer 2 (M2) with trimethylolpropane triglycidyl ether. The structure of the monomers and thermosets is confirmed by nuclear magnetic resonance and Fourier transform infrared spectroscopic techniques. Both thermosets exhibit good thermal and mechanical properties and they are stable in common organic solvents. Furthermore, they can be thermally reprocessed through compression molding with good recovery of the mechanical properties. Last but not least, the fabricated thermosets can be rapidly and completely chemically recycled to water-soluble aldehydes and amines by imine hydrolysis at room temperature in 0.1 m HCl solution. This is promising for development of future materials with multiple circularity by different routes.
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Affiliation(s)
- Sathiyaraj Subramaniyan
- KTH Royal Institute of TechnologyDepartment of Fibre and Polymer TechnologyTeknikringen 58Stockholm100 44Sweden
- KTH Royal Institute of TechnologyWallenberg Wood Science Center (WWSC)Teknikringen 58Stockholm100 44Sweden
| | - Matteo Bergoglio
- KTH Royal Institute of TechnologyDepartment of Fibre and Polymer TechnologyTeknikringen 58Stockholm100 44Sweden
- Politecnico di TorinoDepartment of Applied Science and TechnologyC.so Duca degli Abruzzi 24Torino10129Italy
| | - Marco Sangermano
- Politecnico di TorinoDepartment of Applied Science and TechnologyC.so Duca degli Abruzzi 24Torino10129Italy
| | - Minna Hakkarainen
- KTH Royal Institute of TechnologyDepartment of Fibre and Polymer TechnologyTeknikringen 58Stockholm100 44Sweden
- KTH Royal Institute of TechnologyWallenberg Wood Science Center (WWSC)Teknikringen 58Stockholm100 44Sweden
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9
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Recyclable, malleable, tunable cross-linked elastomers based on boroxines and acetoacetyl. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2022.111736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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10
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Engelen S, Droesbeke M, Aksakal R, Du Prez FE. Ring-Opening Metathesis Polymerization for the Synthesis of Terpenoid-Based Pressure-Sensitive Adhesives. ACS Macro Lett 2022; 11:1378-1383. [PMID: 36454687 DOI: 10.1021/acsmacrolett.2c00618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Pressure-sensitive adhesives (PSAs) made from norbornene-functionalized terpenoid-based monomers are reported as a possible alternative to the conventional petrochemically based PSAs. For this, tetrahydrogeranyl, menthyl, and isobornyl norbornenate monomers, with a renewable carbon content up to 72%, are synthesized and copolymerized via ring-opening metathesis polymerization (ROMP) with cyclooctadiene and 5-norbornene-2-carboxylic acid. ROMP enables a much faster and controlled polymerization process in comparison to free radical polymerization techniques when targeting high molecular weights and therefore unlocks a potential to design a unique class of PSA materials. The moduli at bonding and debonding frequencies of the obtained PSAs are plotted in the Chang classification system and are used to predict their adhesive performance. Tack and peel measurements indicate that the terpenoid-based norbornenate formulations show similar adhesive properties in comparison to the previously investigated acrylic counterparts.
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Affiliation(s)
- Stéphanie Engelen
- Polymer Chemistry Research group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Martijn Droesbeke
- Polymer Chemistry Research group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Resat Aksakal
- Polymer Chemistry Research group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Filip E Du Prez
- Polymer Chemistry Research group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
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11
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Reprocessable and degradable bio-based polyurethane by molecular design engineering with extraordinary mechanical properties for recycling carbon fiber. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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