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Timilsina MP, Stanfield MK, Smith JA, Thickett SC. Synthesis and Characterization of Thiol-Ene Networks Derived from Levoglucosenone. Chempluschem 2024:e202400383. [PMID: 39190021 DOI: 10.1002/cplu.202400383] [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: 06/26/2024] [Revised: 07/03/2024] [Indexed: 08/28/2024]
Abstract
Levoglucosenone (LGO), a renewable compound obtained from cellulose biomass, has been utilized to prepare novel monomers bearing alkene functional groups. These monomer derivatives of LGO were subsequently cured via ultraviolet (UV)-initiated radical thiol-ene "click" chemistry with commercially available multifunctional thiols to obtain colourless, optically transparent cross-linked thermosets. The monomers prepared in this work are unique due to utilising the internal double bond of the LGO ring during polymerization as part of the cross-linked network. The thermal and mechanical properties along with the degradation of thermosets containing both ether and ester linkages within the LGO monomers were studied. These thermosets had tensile strengths of 1.3-3.3 MPa, glass transition temperatures between 23.2 and 27.2 °C, and good thermal stability of up to 300 °C.
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Affiliation(s)
- Mahesh Prasad Timilsina
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania, 7005, Australia
| | - Melissa K Stanfield
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania, 7005, Australia
| | - Jason A Smith
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania, 7005, Australia
| | - Stuart C Thickett
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania, 7005, Australia
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Pezzana L, Fadlallah S, Giri G, Archimbaud C, Roppolo I, Allais F, Sangermano M. DLP 3D Printing of Levoglucosenone-Based Monomers: Exploiting Thiol-ene Chemistry for Bio-Based Polymeric Resins. CHEMSUSCHEM 2024:e202301828. [PMID: 38837600 DOI: 10.1002/cssc.202301828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/31/2024] [Accepted: 06/04/2024] [Indexed: 06/07/2024]
Abstract
Additive manufacturing (AM) is a well-established technique that allows for the development of complex geometries and structures with multiple applications. While considered a more environmentally-friendly method than traditional manufacturing, a significant challenge lies in the availability and ease of synthesis of bio-based alternative resins. In our endeavor to valorize biomass, this work proposes the synthesis of new α,ω-dienes derived from cellulose-derived levoglucosenone (LGO). These dienes are not only straightforward to synthesize but also offer a tunable synthesis approach. Specifically, LGO is first converted into diol precursor, which is subsequently esterified using various carboxylic acids (in this case, 3-butenoic, and 4-pentenoic acids) through a straightforward chemical pathway. The resulting monomers were then employed in UV-activated thiol-ene chemistry for digital light process (DLP). A comprehensive study of the UV-curing process was carried out by Design of Experiment (DoE) to evaluate the influence of light intensity and photoinitiator to find the optimal curing conditions. Subsequently, a thorough thermo-mechanical characterization highlighted the influence of the chemical structure on material properties. 3D printing was performed, enabling the fabrication of complex and self-stain structures with remarkable accuracy and precision. Lastly, a chemical degradation study revealed the potential for end-of-use recycling of the bio-based thermosets.
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Affiliation(s)
- Lorenzo Pezzana
- Dipartimento Scienza e Tecnologia dei Materiali (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy
| | - Sami Fadlallah
- URD Agro-Biotechnologies Industrielles (ABI), AgroParisTech, 3 rue des Rouges Terres, 51110, Pomacle, France
| | - German Giri
- URD Agro-Biotechnologies Industrielles (ABI), AgroParisTech, 3 rue des Rouges Terres, 51110, Pomacle, France
| | - Corentin Archimbaud
- URD Agro-Biotechnologies Industrielles (ABI), AgroParisTech, 3 rue des Rouges Terres, 51110, Pomacle, France
| | - Ignazio Roppolo
- Dipartimento Scienza e Tecnologia dei Materiali (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy
| | - Florent Allais
- URD Agro-Biotechnologies Industrielles (ABI), AgroParisTech, 3 rue des Rouges Terres, 51110, Pomacle, France
| | - Marco Sangermano
- Dipartimento Scienza e Tecnologia dei Materiali (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy
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Pollard B, Gardiner MG, Banwell MG, Connal LA. Polymers from Cellulosic Waste: Direct Polymerization of Levoglucosenone using DBU as a Catalyst. CHEMSUSCHEM 2024; 17:e202301165. [PMID: 38050766 DOI: 10.1002/cssc.202301165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 11/28/2023] [Accepted: 12/04/2023] [Indexed: 12/06/2023]
Abstract
The bio-based platform molecule levoglucosenone (LGO) is now produced at multi-ton scale by the pyrolysis of cellulosic waste. As such it has become an industrially viable, non-petroleum-derived chemical feedstock. Herein we report the direct (one-step) and operationally simple polymerization of LGO that provides a highly sustainable method for polymer synthesis. Specifically, the ability of LGO to act as an electrophile has been harnessed so as to deliver high molecular weight polymers (Mn=236,000 g/mol, Đ=2.4) possessing excellent thermal stabilities (TD5 %=249 °C). Furthermore, there is a significant capacity for the effective chemical manipulation of these polymers as exemplified by treatment of them under Baeyer-Villiger conditions and so creating a simple and green route to hydrophilic materials. These one- and two-step transformations provide the most direct route to new, LGO-derived polymer scaffolds yet reported. E-factors of ca. 0.012 and atom economies of up to 99 % have been realized.
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Affiliation(s)
- Brett Pollard
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
| | - Michael G Gardiner
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
| | - Martin G Banwell
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
- Institute for Advanced and Applied Chemical Synthesis, Jinan University, Guangzhou, 510632, China
| | - Luke A Connal
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
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Kayishaer A, Annatelli M, Hansom CM, Mouterde LMM, Peru AAM, Aricò F, Allais F, Fadlallah S. Green Synthesis of UV-Reactive Polycarbonates from Levoglucosenone and 5-Hydroxymethyl Furfural. Macromol Rapid Commun 2024; 45:e2300483. [PMID: 37876336 DOI: 10.1002/marc.202300483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 10/05/2023] [Indexed: 10/26/2023]
Abstract
This study focuses on the synthesis of fully renewable polycarbonates (PCs) starting from cellulose-based platform molecules levoglucosenone (LGO) and 2,5-bis(hydroxymethyl)furan (BHMF). These unique bio-based PCs are obtained through the reaction of a citronellol-containing triol (Triol-citro) derived from LGO, with a dimethyl carbonate derivative of BHMF (BHMF-DC). Solvent-free polymerizations are targeted to minimize waste generation and promote an eco-friendly approach with a favorable environmental factor (E-factor). The choice of metal catalyst during polymerization significantly influences the polymer properties, resulting in high molecular weight (up to 755 kDa) when Na2 CO3 is employed as an inexpensive catalyst. Characterization using nuclear magnetic resonance confirms the successful incorporation of the furan ring and the retention of the terminal double bond of the citronellol pendant chain. Furthermore, under UV irradiation, the presence of both citronellol and furanic moieties induces singular structural changes, triggering the formation of three distinct structures within the polymer network, a phenomenon herein occurs for the first time in this type of polymer. These findings pave the way to new functional materials prepared from renewable monomers with tunable properties.
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Affiliation(s)
- Aihemaiti Kayishaer
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 3 Rue des Rouges-Terres, Pomacle, 51110, France
| | - Mattia Annatelli
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino155, Venezia, Mestre, 30172, Italy
| | - Chloe M Hansom
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 3 Rue des Rouges-Terres, Pomacle, 51110, France
| | - Louis M M Mouterde
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 3 Rue des Rouges-Terres, Pomacle, 51110, France
| | - Aurélien A M Peru
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 3 Rue des Rouges-Terres, Pomacle, 51110, France
| | - Fabio Aricò
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino155, Venezia, Mestre, 30172, Italy
| | - Florent Allais
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 3 Rue des Rouges-Terres, Pomacle, 51110, France
| | - Sami Fadlallah
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 3 Rue des Rouges-Terres, Pomacle, 51110, France
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