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Chiaradia V, Pensa E, Machado TO, Dove AP. Improving the Performance of Photoactive Terpene-Based Resin Formulations for Light-Based Additive Manufacturing. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2024; 12:6904-6912. [PMID: 38725455 PMCID: PMC11077580 DOI: 10.1021/acssuschemeng.3c08191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 05/12/2024]
Abstract
Photocurable liquid formulations have been a key research focus for the preparation of mechanically robust and thermally stable networks. However, the development of renewable resins to replace petroleum-based commodities presents a great challenge in the field. From this perspective, we disclose the design of photoactive resins based on terpenes and itaconic acid, both potentially naturally sourced, to prepare photosets with adjustable thermomechanical properties. Biobased perillyl itaconate (PerIt) was synthesized from renewable perillyl alcohol and itaconic anhydride via a scalable solvent-free method. Photoirradiation of PerIt in the presence of a multiarm thiol and photoinitiator led to the formation of networks over a range of compositions. Addition of nonmodified terpenes (perillyl alcohol, linalool, or limonene) as reactive diluents allowed for more facile preparation of photocured networks. Photosets within a wide range of properties were accessed, and these could be adjusted by varying diluent type and thiol stoichiometry. The resins showed rapid photocuring kinetics and the ability to form either brittle or elastic materials, with Young's modulus and strain at break ranging from 3.6 to 358 MPa and 15 to 367%, respectively, depending on the chemical composition of the resin. Glass transition temperatures (Tg) were influenced by thioether content, with temperatures ranging from 5 to 43 °C, and all photosets displayed good thermal resistance with Td,5% > 190 °C. Selected formulations containing PerIt and limonene demonstrated suitability for additive manufacturing technologies and high-resolution objects were printed via digital light processing (DLP). Overall, this work presents a simple and straightforward route to prepare renewable resins for rapid prototyping applications.
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Affiliation(s)
- Viviane Chiaradia
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Elena Pensa
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Thiago O. Machado
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Andrew P. Dove
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
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2
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Hahn C, Göttker-Schnetmann I, Tzourtzouklis I, Wagner M, Müller AHE, Floudas G, Mecking S, Frey H. Nopadiene: A Pinene-Derived Cyclic Diene as a Styrene Substitute for Fully Biobased Thermoplastic Elastomers. J Am Chem Soc 2023. [PMID: 38048399 DOI: 10.1021/jacs.3c08130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
The bicyclic 1,2-substituted, 1,3-diene monomer nopadiene (1R,5S)-2-ethenyl-6,6-dimethylbicyclo[3.1.1]hept-2-ene was successfully polymerized by anionic and catalytic polymerization. Nopadiene is produced either through a facile one-step synthesis from myrtenal via Wittig-olefination or via a scalable two-step reaction from nopol (10-hydroxymethylene-2-pinene). Both terpenoids originate from the renewable β-pinene. The living anionic polymerization of nopadiene in apolar and polar solvents at 25 °C using organolithium initiators resulted in homopolymers with well-controlled molar masses in the range of 5.6-103.4 kg·mol-1 (SEC, PS calibration) and low dispersities (Đ) between 1.06 and 1.18. By means of catalytic polymerization with Me4CpSi(Me)2NtBuTiCl2 and (Flu)(Pyr)CH2Lu(CH2TMS)2(THF), the 1,4 and 3,4- microstructures of nopadiene are accessible in excellent selectivity. In pronounced contrast to other 1,3-dienes, the rigid polymers of the sterically demanding nopadiene showed an elevated glass temperature, Tg,∞ = 160 °C (in the limit of very high molar mass, Mn). ABA triblock copolymers with a central polymyrcene block and myrcene content of 60-75 mol %, with molar masses of 100-200 kg/mol were prepared by living anionic polymerization of the pinene-derivable monomers nopadiene and myrcene. This diene copolymerization resulted in thermoplastic elastomers displaying nanophase separation at different molar ratios (DSC, SAXS) and an upper service temperature about 30 K higher than that for traditional petroleum-derived styrenic thermoplastic elastomers due to the high glass temperature of polynopadiene. The materials showed good thermal stability at elevated temperatures under nitrogen (TGA), promising tensile strength and ultimate elongation of up to 1600%.
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Affiliation(s)
- Christoph Hahn
- Department of Chemistry, Johannes Gutenberg University, 55128 Mainz, Germany
- Max-Planck Graduate Center, 55128 Mainz, Germany
| | - Inigo Göttker-Schnetmann
- Chair Materials Science, Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | | | - Manfred Wagner
- Max Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Axel H E Müller
- Department of Chemistry, Johannes Gutenberg University, 55128 Mainz, Germany
| | - George Floudas
- Department of Physics, University of Ioannina, 45110 Ioannina, Greece
- Max Planck Institute for Polymer Research, 55128 Mainz, Germany
- Institute of Materials Science and Computing, University Research Center of Ioannina (URCI), 45110 Ioannina, Greece
| | - Stefan Mecking
- Chair Materials Science, Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Holger Frey
- Department of Chemistry, Johannes Gutenberg University, 55128 Mainz, Germany
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3
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Uva A, Lin A, Tran H. Biobased, Degradable, and Conjugated Poly(Azomethine)s. J Am Chem Soc 2023; 145:3606-3614. [PMID: 36748883 DOI: 10.1021/jacs.2c12668] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Carotenoids are a class of biobased conjugated molecules that bear a resemblance to the substructure of polyacetylene, a well-known conductive but insoluble polymer. Solubility is an important physical attribute for processing materials using different techniques. To impart solubility in polymers, alkyl side chains are often included in the molecular design. While these design strategies are well explored in conjugated systems, they have not been implemented with carotenoids as a building block in polymers. Here, we show a series of carotenoid-based polymers with varying side chain lengths to tune solubility. Using carotenoid and p-phenylenediamine-based monomers, degradable and biobased poly(azomethine)s were synthesized via imine polycondensation. Maximum solubilities corresponding to the varying alkyl chain lengths were quantitatively determined by ultraviolet-visible (UV-vis) absorption spectroscopy. Since carotenoids are biobased with known degradation products, the effect of acidic and artificial sunlight-promoted degradation was systematically investigated using UV-vis spectroscopy, 1H nuclear magnetic resonance (NMR) spectroscopy, infrared (IR) spectroscopy, gel permeation chromatography (GPC), and high-resolution mass spectroscopy (HRMS). Our polymer system was found to have two modes of on-demand degradation, with acid hydrolysis accelerating the rate of polymer degradation and artificial sunlight generating additional degradation products. This work highlights carotenoid monomers as viable candidates in the design of biobased, degradable, and conjugated polymers.
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Affiliation(s)
- Azalea Uva
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Angela Lin
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Helen Tran
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada.,Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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4
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Onita K, Onishi M, Omura T, Wakiya T, Suzuki T, Minami H. Preparation of Monodisperse Bio-Based Polymer Particles via Dispersion Polymerization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7341-7345. [PMID: 35652571 DOI: 10.1021/acs.langmuir.2c00946] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Monodisperse bio-based polymer particles were successfully prepared through the dispersion polymerization of tulip-derived α-methylene-γ-butyrolactone (MBL) in N,N-dimethylformamide/ethanol (7/3, w/w) at 65 °C with poly(vinylpyrrolidone) (PVP) as a colloidal stabilizer. The diameter of the polymer particles was well controlled by changing the composition of the reaction medium or PVP concentration. Furthermore, 100% bio-based poly(MBL) (PMBL) particles were prepared via the dispersion polymerization of MBL in water using hydrolyzed PMBL as a colloidal stabilizer, which was synthesized by hydrolysis of PMBL.
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Affiliation(s)
- Katsuhiro Onita
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan
| | - Miku Onishi
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan
| | - Taro Omura
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan
| | - Takeshi Wakiya
- High Performance Plastics Company Research & Development Institute, Sekisui Chemical Co., Ltd., 2-1 Hyakuyama, Shimamoto-cho, Mishima-gun, Osaka 618-0021, Japan
| | - Toyoko Suzuki
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan
| | - Hideto Minami
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan
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5
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Watanabe H, Kanazawa A, Okumoto S, Aoshima S. Role of the Counteranion in the Stereospecific Living Cationic Polymerization of N-Vinylcarbazole and Vinyl Ethers: Mechanistic Investigation and Synthesis of Stereo-Designed Polymers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hironobu Watanabe
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Arihiro Kanazawa
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | | | - Sadahito Aoshima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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6
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Jiang Y, Zhang Z, Li S, Cui D. Coordination Polymerization of Renewable (E)‐4,
8‐Dimethyl
‐1,3,
7‐Nonatriene
by
Rare‐Earth
Metal Catalysts. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yang Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
- School of Applied Chemistry and Engineering University of Science and Technology of China. Hefei 230026 China
| | - Zhen Zhang
- Department of Materials Science and Engineering Jilin University Changchun 130022 China
| | - Shihui Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
- School of Applied Chemistry and Engineering University of Science and Technology of China. Hefei 230026 China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
- School of Applied Chemistry and Engineering University of Science and Technology of China. Hefei 230026 China
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7
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Ikeda S, Shintani R. Anionic stitching polymerization of styryl(vinyl)silanes for the synthesis of sila-cyclic olefin polymers. Chem Commun (Camb) 2022; 58:5281-5284. [PMID: 35393996 DOI: 10.1039/d2cc00721e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anionic stitching polymerization of styryl(vinyl)silanes has been developed for the synthesis of a new type of silicon- and carbon-containing polymer possessing fused sila-bicyclic structures in the main chain. The obtained polymers were found to be thermally stable with relatively high glass-transition temperatures and highly transparent in the visible light region.
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Affiliation(s)
- Sho Ikeda
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
| | - Ryo Shintani
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
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8
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Nishida T, Satoh K, Tamura M, Li Y, Tomishige K, Kamigaito M. Model and Terpenoid-Derived exo-Methylene Six-Membered Conjugated Dienes: Comprehensive Studies on Cationic and Radical Polymerizations of Substituted 3-Methylenecyclohexenes. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00099] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takenori Nishida
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Kotaro Satoh
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-H120 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Masazumi Tamura
- Research Center for Artificial Photosynthesis, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Yingai Li
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Masami Kamigaito
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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9
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Monaghan OR, Skowron ST, Moore JC, Pin-Nó M, Kortsen K, Atkinson RL, Krumins E, Lentz JC, Machado F, Onat Z, Brookfield A, Collison D, Khlobystov AN, De Focatiis D, Irvine DJ, Taresco V, Stockman RA, Howdle SM. A self-crosslinking monomer, α-pinene methacrylate: understanding and exploiting hydrogen abstraction. Polym Chem 2022. [DOI: 10.1039/d2py00878e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combined computational/experimental approach has been applied to investigate the self-crosslinking of α-pinene methacrylate via chain transfer through hydrogen abstraction.
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Affiliation(s)
- Olivia R. Monaghan
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Stephen T. Skowron
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Jonathan C. Moore
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - María Pin-Nó
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Kristoffer Kortsen
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Rachel L. Atkinson
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Eduards Krumins
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Joachim C. Lentz
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Fabricio Machado
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
- Institute of Chemistry, University of Brasília, Campus Universitário Darcy Ribeiro, 70910-900, Brasília, DF, Brazil
| | - Zeynep Onat
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Adam Brookfield
- Department of Chemistry, The University of Manchester, Manchester M13 9PL, UK
| | - David Collison
- Department of Chemistry, The University of Manchester, Manchester M13 9PL, UK
| | - Andrei N. Khlobystov
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Davide De Focatiis
- Faculty of Engineering, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Derek J. Irvine
- Faculty of Engineering, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Vincenzo Taresco
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Robert A. Stockman
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
| | - Steven M. Howdle
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, Nottingham, UK
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10
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Barent R, Wagner M, Frey H. Geometric Requirements for Living Anionic Polymerization: Polymerization of rotationally constrained 1,3-Dienes. Polym Chem 2022. [DOI: 10.1039/d2py00999d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The living anionic copolymerization of 1,3-dienes such as isoprene (I) or butadiene (B) can afford a variety of different polymer microstructures which determine the material’s properties. One decisive factor for...
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11
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Wahlen C, Frey H. Anionic Polymerization of Terpene Monomers: New Options for Bio-Based Thermoplastic Elastomers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00770] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Christian Wahlen
- Department of Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Holger Frey
- Department of Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
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12
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Nishida T, Satoh K, Tamura M, Li Y, Tomishige K, Caillol S, Ladmiral V, Vayer M, Mahut F, Sinturel C, Kamigaito M. Terpenoid-derived conjugated dienes with exo-methylene and a 6-membered ring: high cationic reactivity, regioselective living cationic polymerization, and random and block copolymerization with vinyl ethers. Polym Chem 2021. [DOI: 10.1039/d1py00035g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biobased exo-methylene-conjugated dienes underwent regioselective living cationic polymerization to result in well-defined homo- and copolymers with good thermal properties.
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Affiliation(s)
- Takenori Nishida
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Kotaro Satoh
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Masazumi Tamura
- Research Center for Artificial Photosynthesis
- Advanced Research Institute for Natural Science and Technology
- Osaka City University
- Osaka
- Japan
| | - Yingai Li
- Department of Applied Chemistry
- School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry
- School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
| | | | | | - Marylène Vayer
- Interfaces
- Confinement
- Matériaux et Nanostructures (ICMN)
- UMR 7374
- CNRS-Université d'Orléans
| | - Frédéric Mahut
- Interfaces
- Confinement
- Matériaux et Nanostructures (ICMN)
- UMR 7374
- CNRS-Université d'Orléans
| | - Christophe Sinturel
- Interfaces
- Confinement
- Matériaux et Nanostructures (ICMN)
- UMR 7374
- CNRS-Université d'Orléans
| | - Masami Kamigaito
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
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13
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Nishida T, Satoh K, Kamigaito M. Biobased Polymers via Radical Homopolymerization and Copolymerization of a Series of Terpenoid-Derived Conjugated Dienes with exo-Methylene and 6-Membered Ring. Molecules 2020; 25:E5890. [PMID: 33322773 PMCID: PMC7763260 DOI: 10.3390/molecules25245890] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 01/28/2023] Open
Abstract
A series of exo-methylene 6-membered ring conjugated dienes, which are directly or indirectly obtained from terpenoids, such as β-phellandrene, carvone, piperitone, and verbenone, were radically polymerized. Although their radical homopolymerizations were very slow, radical copolymerizations proceeded well with various common vinyl monomers, such as methyl acrylate (MA), acrylonitrile (AN), methyl methacrylate (MMA), and styrene (St), resulting in copolymers with comparable incorporation ratios of bio-based cyclic conjugated monomer units ranging from 40 to 60 mol% at a 1:1 feed ratio. The monomer reactivity ratios when using AN as a comonomer were close to 0, whereas those with St were approximately 0.5 to 1, indicating that these diene monomers can be considered electron-rich monomers. Reversible addition fragmentation chain-transfer (RAFT) copolymerizations with MA, AN, MMA, and St were all successful when using S-cumyl-S'-butyl trithiocarbonate (CBTC) as the RAFT agent resulting in copolymers with controlled molecular weights. The copolymers obtained with AN, MMA, or St showed glass transition temperatures (Tg) similar to those of common vinyl polymers (Tg ~ 100 °C), indicating that biobased cyclic structures were successfully incorporated into commodity polymers without losing good thermal properties.
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Affiliation(s)
- Takenori Nishida
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan; (T.N.); (K.S.)
| | - Kotaro Satoh
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan; (T.N.); (K.S.)
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, School of Materials and Chemical Technology, 2-12-1-H120 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Masami Kamigaito
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan; (T.N.); (K.S.)
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