1
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Fenimore LM, Bin Rusayyis MA, Onsager CC, Grayson MA, Torkelson JM. Reprocessable Polymer Networks Containing Sulfur-Based, Percolated Dynamic Covalent Cross-Links and Percolated or Non-Percolated, Static Cross-Links. Macromol Rapid Commun 2024:e2400303. [PMID: 38991017 DOI: 10.1002/marc.202400303] [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: 05/03/2024] [Revised: 06/26/2024] [Indexed: 07/13/2024]
Abstract
One method to improve the properties of covalent adaptable networks (CANs) is to reinforce them with a fraction of permanent cross-links without sacrificing their (re)processability. Here, a simple method to synthesize poly(n-hexyl methacrylate) (PHMA) and poly(n-lauryl methacrylate) (PLMA) networks containing static dialkyl disulfide cross-links (utilizing bis(2-methacryloyl)oxyethyl disulfide, or DSDMA, as a permanent cross-linker) and dynamic dialkylamino sulfur-sulfur cross-links (utilizing BiTEMPS methacrylate as a dissociative dynamic covalent cross-linker) is presented. The robustness and (re)processability of the CANs are demonstrated, including the full recovery of cross-link density after recycling. The authors also investigate the effect of static cross-link content on the stress relaxation responses of the CANs with and without percolated, static cross-links. As PHMA and PLMA have very different activation energies of their respective cooperative segmental mobilities, it is shown that the dissociative CANs without percolated, static cross-links have activation energies of stress relaxation that are dominated by the dissociation of BiTEMPS methacrylate cross-links rather than by the cooperative relaxations of backbone segments, i.e., the alpha relaxation. In CANs with percolated, static cross-links, the segmental relaxation of side chains, i.e., the beta relaxation, is critical in allowing for large-scale stress relaxation and governs their activation energies of stress relaxation.
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Affiliation(s)
- Logan M Fenimore
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Mohammed A Bin Rusayyis
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Claire C Onsager
- Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Matthew A Grayson
- Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - John M Torkelson
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
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2
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Sahraeeazartamar F, Terryn S, Sangma RN, Krack M, Peeters R, Van den Brande N, Deferme W, Vanderborght B, Van Assche G, Brancart J. Diels-Alder Network Blends as Self-Healing Encapsulants for Liquid Metal-Based Stretchable Electronics. ACS APPLIED MATERIALS & INTERFACES 2024; 16:34192-34212. [PMID: 38915136 DOI: 10.1021/acsami.4c07129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Two dynamic covalent networks based on the Diels-Alder reaction were blended to exploit the properties of the dissimilar polymer backbones. Furan-functionalized polyether amines based on poly(propylene oxide) (PPO) FD4000 and polydimethylsiloxane (PDMS) FS5000 were mixed in a common solvent and reversibly cross-linked with the same bismaleimide DPBM. The morphology of the phase-separated blends is primarily controlled by the concentration of backbones. Increasing the PDMS content of the blends results in a dilute droplet morphology at 25 wt %, with a growing size and concentration of droplets and the formation of two separate PPO- and PDMS-rich layers at 50 wt %. Further increasing the PDMS content to 75 wt % leads to larger droplets and a thicker layer of the secondary phase. The hydrophobic PDMS phase creates a barrier against water, while the more hydrophilic PPO phase enhances the resistance against oxygen diffusion. Lowering the maleimide-to-furan stoichiometric ratio resulted in a decrease in cross-link density and thus more flexible and stretchable encapsulants. Changes in the stoichiometric ratio also affected the phase morphology due to resulting changes in phase separation and network formation kinetics. Lowering the stoichiometric ratio also resulted in enhanced self-healing properties of 96% at room temperature as a consequence of the increased chain mobility in the blended networks. The self-healing blends were used to encapsulate liquid metal circuits to create stretchable strain sensors with a linear electro-mechanical response without much drift or hysteresis, which could be efficiently recovered by 90% after the damage-healing cycles.
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Affiliation(s)
- Fatemeh Sahraeeazartamar
- Lab of Physical Chemistry and Polymer Science (FYSC), Sustainable Materials Engineering Research Group (SUME), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Seppe Terryn
- Brubotics, Department of Mechanical Engineering, Vrije Universiteit Brussel and IMEC, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Rathul Nengminza Sangma
- Brubotics, Department of Mechanical Engineering, Vrije Universiteit Brussel and IMEC, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Maximilian Krack
- Institute for Materials Research (IMO) and IMEC (IMO-IMOMEC), Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Roos Peeters
- Materials and Packaging Research & Services (MPR&S), Institute for Materials Research (IMO-IMOMEC), Hasselt University, Wetenschapspark 27, 3590 Diepenbeek, Belgium
| | - Niko Van den Brande
- Lab of Physical Chemistry and Polymer Science (FYSC), Sustainable Materials Engineering Research Group (SUME), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Wim Deferme
- Institute for Materials Research (IMO) and IMEC (IMO-IMOMEC), Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Bram Vanderborght
- Brubotics, Department of Mechanical Engineering, Vrije Universiteit Brussel and IMEC, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Guy Van Assche
- Lab of Physical Chemistry and Polymer Science (FYSC), Sustainable Materials Engineering Research Group (SUME), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Joost Brancart
- Lab of Physical Chemistry and Polymer Science (FYSC), Sustainable Materials Engineering Research Group (SUME), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
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Zhang M, Choi W, Kim M, Choi J, Zang X, Ren Y, Chen H, Tsukruk V, Peng J, Liu Y, Kim DH, Lin Z. Recent Advances in Environmentally Friendly Dual-crosslinking Polymer Networks. Angew Chem Int Ed Engl 2024; 63:e202318035. [PMID: 38586975 DOI: 10.1002/anie.202318035] [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: 11/25/2023] [Revised: 03/18/2024] [Accepted: 04/08/2024] [Indexed: 04/09/2024]
Abstract
Environmentally friendly crosslinked polymer networks feature degradable covalent or non-covalent bonds, with many of them manifesting dynamic characteristics. These attributes enable convenient degradation, facile reprocessibility, and self-healing capabilities. However, the inherent instability of these crosslinking bonds often compromises the mechanical properties of polymer networks, limiting their practical applications. In this context, environmentally friendly dual-crosslinking polymer networks (denoted EF-DCPNs) have emerged as promising alternatives to address this challenge. These materials effectively balance the need for high mechanical properties with the ability to degrade, recycle, and/or self-heal. Despite their promising potential, investigations into EF-DCPNs remain in their nascent stages, and several gaps and limitations persist. This Review provides a comprehensive overview of the synthesis, properties, and applications of recent progress in EF-DCPNs. Firstly, synthetic routes to a rich variety of EF-DCPNs possessing two distinct types of dynamic bonds (i.e., imine, disulfide, ester, hydrogen bond, coordination bond, and other bonds) are introduced. Subsequently, complex structure- and dynamic nature-dependent mechanical, thermal, and electrical properties of EF-DCPNs are discussed, followed by their exemplary applications in electronics and biotechnology. Finally, future research directions in this rapidly evolving field are outlined.
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Affiliation(s)
- Mingyue Zhang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | - Woosung Choi
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Minju Kim
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
- Department of Chemistry and Nanoscience, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Jinyoung Choi
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Xuerui Zang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | - Yujing Ren
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | - Han Chen
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | - Vladimir Tsukruk
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Juan Peng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Yijiang Liu
- College of Chemistry, Key Lab of Environment-Friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan, Hunan Province, 411105, China
| | - Dong Ha Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Zhiqun Lin
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
- Department of Chemistry and Nanoscience, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
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Wang T, Gao D, Yin H, Zhao J, Wang X, Niu H. Kinetic Study of the Diels-Alder Reaction between Maleimide and Furan-Containing Polystyrene Using Infrared Spectroscopy. Polymers (Basel) 2024; 16:441. [PMID: 38337328 DOI: 10.3390/polym16030441] [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: 12/08/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/12/2024] Open
Abstract
The Diels-Alder (D-A) reaction between furan and maleimide is a thermally reversible reaction that has become a vital chemical technique for designing polymer structures and functions. The kinetics of this reaction, particularly in polymer bulk states, have significant practical implications. In this study, we investigated the feasibility of utilizing infrared spectroscopy to measure the D-A reaction kinetics in bulk-state polymer. Specifically, we synthesized furan-functionalized polystyrene and added a maleimide small-molecule compound to form a D-A adduct. The intensity of the characteristic absorption peak of the D-A adduct was quantitatively measured by infrared spectroscopy, and the dependence of conversion of the D-A reaction on time was obtained at different temperatures. Subsequently, the D-A reaction apparent kinetic coefficient kapp and the Arrhenius activation energy Ea,D-A were calculated. These results were compared with those determined from 1H-NMR in the polymer solution states.
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Affiliation(s)
- Tongtong Wang
- Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Dali Gao
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing 100013, China
| | - Hua Yin
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing 100013, China
| | - Jiawei Zhao
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing 100013, China
| | - Xingguo Wang
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing 100013, China
| | - Hui Niu
- Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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5
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Yu J, Yang H, Ji H, Zhang X, Wang R, Zhao S, Wang R, Zhang L. Solvent-Free Environmentally Friendly Method to Prepare Thermo-Reversible Fully Bio-Based Elastomers. ACS OMEGA 2023; 8:32146-32158. [PMID: 37692234 PMCID: PMC10483686 DOI: 10.1021/acsomega.3c04528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/14/2023] [Indexed: 09/12/2023]
Abstract
Most rubber products come from petrochemical resources, which are increasingly in short supply. Rubber products that formed irreversible chemical bonds in the vulcanization process are difficult to recycle, resulting in a serious waste of resources. Therefore, it is important to prepare a kind of reprocessable biobased elastomers. Using furfuryl methacrylate (FMA) as the modified monomer, poly(dibutyl itaconate-myrcene-furfuryl methacrylate) (PDBIMFA) was synthesized by high-temperature emulsion polymerization successfully. The structure and compositions of PDBIMFA were characterized by Fourier transform infrared and 1H NMR, and the effects of different FMA contents on the structures and properties of PDBIMFA were systematically studied. Based on the Diels-Alder reaction, bismaleimide (BMI) and carbon black (CB) were introduced into PDBIMFA as cross-linking agents and reinforcing fillers, respectively, by the melt blending method, and PDBIMFA-BMI elastomer materials and CB/PDBIMFA-BMI elastomer composites with thermo-reversible cross-linking characteristics were prepared. The effects of the ratio of FMA and BMI on the mechanical properties of PDBIMFA-BMI were studied. PDBIMFA-BMI and CB/PDBIMFA-BMI were reprocessed twice, and the recovery rate of tensile strength was both more than 90%. The addition of CB was found to play a reinforcing role in the elastomer and with the introduction of the amount of CB, the reprocessability of composite remained at a good level. It is hoped that this research will provide a new strategy for the sustainable development of bio-based elastomer materials.
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Affiliation(s)
- Jie Yu
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Hui Yang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Haijun Ji
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xin Zhang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Rui Wang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Shuainan Zhao
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Runguo Wang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Liqun Zhang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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6
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Yan T, Balzer AH, Herbert KM, Epps TH, Korley LTJ. Circularity in polymers: addressing performance and sustainability challenges using dynamic covalent chemistries. Chem Sci 2023; 14:5243-5265. [PMID: 37234906 PMCID: PMC10208058 DOI: 10.1039/d3sc00551h] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 04/14/2023] [Indexed: 05/28/2023] Open
Abstract
The circularity of current and future polymeric materials is a major focus of fundamental and applied research, as undesirable end-of-life outcomes and waste accumulation are global problems that impact our society. The recycling or repurposing of thermoplastics and thermosets is an attractive solution to these issues, yet both options are encumbered by poor property retention upon reuse, along with heterogeneities in common waste streams that limit property optimization. Dynamic covalent chemistry, when applied to polymeric materials, enables the targeted design of reversible bonds that can be tailored to specific reprocessing conditions to help address conventional recycling challenges. In this review, we highlight the key features of several dynamic covalent chemistries that can promote closed-loop recyclability and we discuss recent synthetic progress towards incorporating these chemistries into new polymers and existing commodity plastics. Next, we outline how dynamic covalent bonds and polymer network structure influence thermomechanical properties related to application and recyclability, with a focus on predictive physical models that describe network rearrangement. Finally, we examine the potential economic and environmental impacts of dynamic covalent polymeric materials in closed-loop processing using elements derived from techno-economic analysis and life-cycle assessment, including minimum selling prices and greenhouse gas emissions. Throughout each section, we discuss interdisciplinary obstacles that hinder the widespread adoption of dynamic polymers and present opportunities and new directions toward the realization of circularity in polymeric materials.
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Affiliation(s)
- Tianwei Yan
- Department of Chemical & Biomolecular Engineering, University of Delaware Newark 19716 Delaware USA
- Center for Plastics Innovation (CPI), University of Delaware Newark 19716 Delaware USA
| | - Alex H Balzer
- Department of Chemical & Biomolecular Engineering, University of Delaware Newark 19716 Delaware USA
- Center for Plastics Innovation (CPI), University of Delaware Newark 19716 Delaware USA
| | - Katie M Herbert
- Center for Plastics Innovation (CPI), University of Delaware Newark 19716 Delaware USA
| | - Thomas H Epps
- Department of Chemical & Biomolecular Engineering, University of Delaware Newark 19716 Delaware USA
- Center for Plastics Innovation (CPI), University of Delaware Newark 19716 Delaware USA
- Department of Materials Science and Engineering, University of Delaware Newark 19716 Delaware USA
- Center for Research in Soft matter and Polymers (CRiSP), University of Delaware Newark 19716 Delaware USA
| | - LaShanda T J Korley
- Department of Chemical & Biomolecular Engineering, University of Delaware Newark 19716 Delaware USA
- Center for Plastics Innovation (CPI), University of Delaware Newark 19716 Delaware USA
- Department of Materials Science and Engineering, University of Delaware Newark 19716 Delaware USA
- Center for Research in Soft matter and Polymers (CRiSP), University of Delaware Newark 19716 Delaware USA
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7
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de Heer Kloots MHP, Schoustra SK, Dijksman JA, Smulders MMJ. Phase separation in supramolecular and covalent adaptable networks. SOFT MATTER 2023; 19:2857-2877. [PMID: 37060135 PMCID: PMC10131172 DOI: 10.1039/d3sm00047h] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Phase separation phenomena have been studied widely in the field of polymer science, and were recently also reported for dynamic polymer networks (DPNs). The mechanisms of phase separation in dynamic polymer networks are of particular interest as the reversible nature of the network can participate in the structuring of the micro- and macroscale domains. In this review, we highlight the underlying mechanisms of phase separation in dynamic polymer networks, distinguishing between supramolecular polymer networks and covalent adaptable networks (CANs). Also, we address the synergistic effects between phase separation and reversible bond exchange. We furthermore discuss the effects of phase separation on the material properties, and how this knowledge can be used to enhance and tune material properties.
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Affiliation(s)
- Martijn H P de Heer Kloots
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands.
- Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Sybren K Schoustra
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands.
| | - Joshua A Dijksman
- Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
| | - Maarten M J Smulders
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands.
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van den Tempel P, van der Boon EO, Winkelman JG, Krasnikova AV, Parisi D, Deuss PJ, Picchioni F, Bose RK. Beyond Diels-Alder: Domino reactions in furan-maleimide click networks. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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9
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Azadi Namin P, Booth P, Treviño Silva J, Voigt LJ, Zelisko PM. Transparent and Thermoplastic Silicone Materials Based on Room-Temperature Diels–Alder Reactions. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c00890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- Paria Azadi Namin
- Department of Chemistry and Centre for Biotechnology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario Canada L2S 3A1
| | - Phoebe Booth
- Department of Chemistry and Centre for Biotechnology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario Canada L2S 3A1
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Julio Treviño Silva
- Department of Chemistry and Centre for Biotechnology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario Canada L2S 3A1
| | - Laura J. Voigt
- Department of Chemistry and Centre for Biotechnology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario Canada L2S 3A1
| | - Paul M. Zelisko
- Department of Chemistry and Centre for Biotechnology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario Canada L2S 3A1
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Zhang D, Vashahi F, Dashtimoghadam E, Hu X, Wang CJ, Garcia J, Bystrova AV, Vatankhah-Varnoosfaderani M, Leibfarth FA, Sheiko SS. Circular Upcycling of Bottlebrush Thermosets. Angew Chem Int Ed Engl 2023; 62:e202217941. [PMID: 36583627 DOI: 10.1002/anie.202217941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/22/2022] [Accepted: 12/29/2022] [Indexed: 12/31/2022]
Abstract
The inability to re-process thermosets hinders their utility and sustainability. An ideal material should combine closed-loop recycling and upcycling capabilities. This trait is realized in polydimethylsiloxane bottlebrush networks using thermoreversible Diels-Alder cycloadditions to enable both reversible disassembly into a polymer melt and on-demand reconfiguration to an elastomer of either lower or higher stiffness. The crosslink density was tuned by loading the functionalized networks with a controlled fraction of dormant crosslinkers and crosslinker scavengers, such as furan-capped bis-maleimide and anthracene, respectively. The resulting modulus variations precisely followed the stoichiometry of activated furan and maleimide moieties, demonstrating the lack of side reactions during reprocessing. The presented circularity concept is independent from the backbone or side chain chemistry, making it potentially applicable to a wide range of brush-like polymers.
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Affiliation(s)
- Daixuan Zhang
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Foad Vashahi
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Erfan Dashtimoghadam
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Xiaobo Hu
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Claire J Wang
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jessica Garcia
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Aleksandra V Bystrova
- A.N.Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St. 28, Moscow, 119334, Russian Federation
| | | | - Frank A Leibfarth
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Sergei S Sheiko
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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11
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Zhang G, Li C, Tan J, Wang M, Liu Z, Ren Y, Xue Y, Zhang Q. Double Modification of Poly(urethane-urea): Toward Healable, Tear-Resistant, and Mechanically Robust Elastomers for Strain Sensors. ACS APPLIED MATERIALS & INTERFACES 2023; 15:2134-2146. [PMID: 36571454 DOI: 10.1021/acsami.2c18397] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Polyurethane elastomers with mechanical robustness, tear resistance, and healing efficiency hold great potential in wearable sensors and soft robots. However, achieving excellent mechanical properties and healable capability simultaneously remains highly desirable but exclusive. Herein, we propose a straightforward procedure for double modification of poly(urethane-urea) (PUU) via thiolactone chemistry, and two different dynamic cross-linking bonds (disulfide linkages and Zn2+/imidazole coordination) are successively incorporated into the side chain of PUU, producing double cross-linking elastomers (PUU-I/Zn-S). The synergy between disulfide linkages and Zn2+/imidazole coordination forms a robust and dynamic network, endowing PUU-I/Zn-S with excellent mechanical and healing properties. The tensile stress, elongation at break, and toughness of the resultant elastomer can reach 44.06 MPa, 1000%, and 181.93 MJ m-3, respectively. Meanwhile, PUU-I/Zn-S exhibits outstanding tearing resistance with a tearing energy of 42.1 kJ m-2. The PUU-I/Zn-S can restore its mechanical robustness after self-healing at room temperature (25 ± 2 °C) or 60 °C and even maintain 91% of its original tensile strength after reprocessing two times. Additionally, PUU-I/Zn-S-based strain sensors are fabricated by introducing conductive nanofillers and demonstrate remarkable sensing capability to diverse human body motions. This work demonstrates a simple and feasible method for the postfunctionalization and enhancement of polyurethane and provides some insights into reconciling the traditional contradictory properties of mechanical robustness and healing efficiency.
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Affiliation(s)
- Guoxian Zhang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Chunmei Li
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - JiaoJun Tan
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
- College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Mingqi Wang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Zongxu Liu
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Yafeng Ren
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Ying Xue
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Qiuyu Zhang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
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12
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Wang L, Liu Y, Hao N, Qiao Y, Zeng W, Wei L, Du A. Combining multiple hydrogen bonds and boronic ester chemistry towards mechanically robust and creep resisting elastomer vitrimer. POLYMER 2023. [DOI: 10.1016/j.polymer.2022.125595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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13
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Dynamic Chemistry: The Next Generation Platform for Various Elastomers and Their Mechanical Properties with Self-Healing Performance. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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14
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Hang G, Liu W, Shakir U, Zhang T, Zheng S. Self-healable and reprocessable networks of Poly(propylene oxide) with POSS crosslinked with disulfide bonds. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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15
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Aiswarya S, Awasthi P, Banerjee SS. Self-healing thermoplastic elastomeric materials: Challenges, opportunities and new approaches. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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16
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Schoustra SK, de Heer Kloots MHP, Posthuma J, van Doorn D, Dijksman JA, Smulders MMJ. Raman Spectroscopy Reveals Phase Separation in Imine-Based Covalent Adaptable Networks. Macromolecules 2022; 55:10341-10355. [DOI: 10.1021/acs.macromol.2c01595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/14/2022] [Indexed: 12/02/2022]
Affiliation(s)
- Sybren K. Schoustra
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Martijn H. P. de Heer Kloots
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- Department of Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Joris Posthuma
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- Department of Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Daphne van Doorn
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- Department of Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Joshua A. Dijksman
- Department of Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Maarten M. J. Smulders
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
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17
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Raut SK, Asha AB, Singha NK, Narain R. Ultrafast Derived Self-Healable, Reprocessable Polyurethane Elastomer Based on Dynamic “Electrophilic Substitution (ES)-Click” Chemistry. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Sagar Kumar Raut
- Rubber Technology Centre, Indian Institute of Technology, Kharagpur 721302, India
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G2G6, Canada
| | - Anika B. Asha
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G2G6, Canada
| | - Nikhil K. Singha
- Rubber Technology Centre, Indian Institute of Technology, Kharagpur 721302, India
| | - Ravin Narain
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G2G6, Canada
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18
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Guo Z, Wang W, Majeed K, Zhang B, Zhou F, Zhang Q. Fabrication of multi-functional bio-based vitrimer and conductive composites via ugi four-component polymerization. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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N-Doped Graphene Quantum Dot Nanoparticle Synthesis of Optical Active Thermal Stable Polyurea Nanocomposites Using Polybutadiene Chain Modification. INT J POLYM SCI 2022. [DOI: 10.1155/2022/2426749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Geminate thermal stability with optical characteristics is a moving forward achievement in the preparation of polybutadiene-based polyurea nanocomposites. In this regard, nitrogen-doped graphene quantum dots were synthesized from a one-pot hydrothermal reaction of citric acid with urea in an aqueous solution. An in situ polymerization approach was used for the synthesis of polyurea from the reaction of telechelic amine functionalized polybutadiene and toluene diisocyanate (TDI) in the presence of the DBTDL catalyst. Nanocomposites were prepared using 1–3 weight percent of graphene N-quantum dot nanoparticles in the polymer matrix. 1H-NMR and FT-IR spectroscopy techniques elaborated successful synthesis of primary polymer binder, polyurea and nanocomposites. Thermal degradation and characteristics were investigated using the TGA/DTG and DSC methods; lower degradation rates with progressed thermal stabilities as well as proportionate thermal characteristics with wider thermal service range were obtained especially in 3 wt% nanocomposite. Optical behavior information of samples was studied using UV-vis absorption and photoluminescence (PL) spectrometers. EDX, SEM, and AFM techniques confirmed successful nanoparticle and nanocomposite synthesis with improved morphologic and topographic properties.
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20
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Thermally remendable, weldable, and recyclable epoxy network crosslinked with reversible Diels-alder bonds. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Wu R, Zhang S, Song Q, Tan Y. Synthesis and solution properties of hydrophobically associating water-soluble copolymer with dynamic covalent bond. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Mechanically robust and flame-retarded EPDM composites with high loading of Mg(OH)2 based on reversible crosslinking network from Diels-Alder reactions. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Cantamessa F, Damonte G, Monticelli O, Arrigo R, Fina A. Thermoreversible Cross-Linked Rubber Prepared via Melt Blending and Its Nanocomposites. ACS APPLIED POLYMER MATERIALS 2022; 4:4796-4807. [PMID: 35846782 PMCID: PMC9274616 DOI: 10.1021/acsapm.2c00416] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A covalent adaptable network based on the thermoreversible cross-linking of an ethylene-propylene rubber through Diels-Alder (DA) reaction was prepared for the first time through melt blending as an environmental-friendly alternative to traditional synthesis in organic solvents. Functionalization of the rubber with furan groups was performed in a melt blender and subsequently mixed with different amounts of bismaleimide in a microextruder. Cross-linking was confirmed by FT-IR spectroscopy and insolubility at room temperature, while its thermoreversible character was confirmed by a solubility test at 110 °C and by remolding via hot-pressing. Mechanical and thermomechanical properties of the obtained rubbers showed potential to compete with conventionally cross-linked elastomers, with stiffness in the range 1-1.7 MPa and strain at break in the range 200-500%, while allowing recycling via a simple melt processing step. Nanocomposites based on the thermoreversible rubber were prepared with reduced graphene oxide (rGO), showing significantly increasing stiffness up to ca. 8 MPa, ∼2-fold increased strength, and thermal conductivity up to ∼0.5 W/(m K). Results in this paper may open for industrially viable and sustainable applications of thermoreversible elastomers.
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Affiliation(s)
- Francesco Cantamessa
- Dipartimento
di Scienza Applicata e Tecnologia, Politecnico
di Torino, 15121 Alessandria, Italy
| | - Giacomo Damonte
- Dipartimento
di Chimica e Chimica Industriale, Università
di Genova, 16146 Genova, Italy
| | - Orietta Monticelli
- Dipartimento
di Chimica e Chimica Industriale, Università
di Genova, 16146 Genova, Italy
| | - Rossella Arrigo
- Dipartimento
di Scienza Applicata e Tecnologia, Politecnico
di Torino, 15121 Alessandria, Italy
| | - Alberto Fina
- Dipartimento
di Scienza Applicata e Tecnologia, Politecnico
di Torino, 15121 Alessandria, Italy
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24
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Rahmatpanah Z, Nikje MMA. Fe3O4@Si-NH2 Magnetic Reinforcement of Novel Polybutadiene-Based Polyurea. RUSS J APPL CHEM+ 2022. [DOI: 10.1134/s1070427222070175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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25
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Mohd Sani NF, Yee HJ, Othman N, Talib AA, Shuib RK. Intrinsic self-healing rubber: A review and perspective of material and reinforcement. POLYMER TESTING 2022; 111:107598. [DOI: 10.1016/j.polymertesting.2022.107598] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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26
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Terryn S, Brancart J, Roels E, Verhelle R, Safaei A, Cuvellier A, Vanderborght B, Van Assche G. Structure–Property Relationships of Self-Healing Polymer Networks Based on Reversible Diels–Alder Chemistry. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Seppe Terryn
- Brubotics, Vrije Universiteit Brussel (VUB) and Imec, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Joost Brancart
- Physical Chemistry and Polymer Science (FYSC), VUB, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Ellen Roels
- Brubotics, Vrije Universiteit Brussel (VUB) and Imec, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Robrecht Verhelle
- Physical Chemistry and Polymer Science (FYSC), VUB, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Ali Safaei
- Physical Chemistry and Polymer Science (FYSC), VUB, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Audrey Cuvellier
- Physical Chemistry and Polymer Science (FYSC), VUB, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Bram Vanderborght
- Brubotics, Vrije Universiteit Brussel (VUB) and Imec, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Guy Van Assche
- Physical Chemistry and Polymer Science (FYSC), VUB, Pleinlaan 2, B-1050 Brussels, Belgium
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27
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Liu W, Huang J, Gong Z, Fan J, Chen Y. Healable, recyclable and mechanically robust elastomers with multiple dynamic cross-linking bonds. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124900] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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28
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Cross-Linking of Polypropylene with Thiophene and Imidazole. Polymers (Basel) 2022; 14:polym14112198. [PMID: 35683871 PMCID: PMC9182647 DOI: 10.3390/polym14112198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/24/2022] [Accepted: 05/26/2022] [Indexed: 11/18/2022] Open
Abstract
In this work, two novel routes to synthesis cross-linked polypropylene (PP) are introduced by using two different precursors (2-thiophenemethyl amine (TMA) and 1-(3 aminopropyl) imidazole (API)), both cross-linked with 1,1′-(methylenedi-4,1-phenylene) bismaleimide (BM) at two different annealing temperature values (T = 50 °C and T = 150 °C). Both Diels–Alder (DA) and Michael addition reactions were successfully performed with TMA and API, respectively, albeit with different reactivity. Imidazole clearly shows a higher reactivity compared to thiophene. In addition, an increase in annealing temperature leads to a higher degree of cross-linking. The highest degree of cross-linking was obtained by the imidazole product after annealing at 150 °C (IMG1A150) as evident from the highest complex viscosity (|η*|) value of IMG1A150. A difference in rheology and thermal properties between the imidazole and thiophene cross-linked products was also observed. However, both products have superior melt properties and thermal stability compared with the starting material. They show processability at high temperatures. The melt flow behavior and de-cross-linking at higher temperatures can be tuned depending on the choice of imidazole or thiophene. This study shows an advance on the cross-linked PP processing and its product performances for further application on the commercial scale.
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29
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Berto P, Mehats J, Wirotius AL, Grelier S, Peruch F. Reprocessable Covalent Elastomeric Networks from Functionalized 1,4- cis-Polyisoprene and -Polybutadiene. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pierre Berto
- Université Bordeaux, CNRS, Bordeaux INP/ENSCBP, Laboratoire de Chimie des Polymères Organiques, UMR 5629, 16 Avenue Pey-Berland, F-33607 Pessac Cedex, France
| | - Jérémy Mehats
- Université Bordeaux, CNRS, Bordeaux INP/ENSCBP, Laboratoire de Chimie des Polymères Organiques, UMR 5629, 16 Avenue Pey-Berland, F-33607 Pessac Cedex, France
| | - Anne-Laure Wirotius
- Université Bordeaux, CNRS, Bordeaux INP/ENSCBP, Laboratoire de Chimie des Polymères Organiques, UMR 5629, 16 Avenue Pey-Berland, F-33607 Pessac Cedex, France
| | - Stéphane Grelier
- Université Bordeaux, CNRS, Bordeaux INP/ENSCBP, Laboratoire de Chimie des Polymères Organiques, UMR 5629, 16 Avenue Pey-Berland, F-33607 Pessac Cedex, France
| | - Frédéric Peruch
- Université Bordeaux, CNRS, Bordeaux INP/ENSCBP, Laboratoire de Chimie des Polymères Organiques, UMR 5629, 16 Avenue Pey-Berland, F-33607 Pessac Cedex, France
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30
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Rashid MA, Liu W, Wei Y, Jiang Q. Review on intrinsically recyclable flame retardant thermosets enabled through covalent bonds. J Appl Polym Sci 2022. [DOI: 10.1002/app.52493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Muhammad Abdur Rashid
- Center for Civil Aviation Composites Donghua University, 2999 North Renmin Road Shanghai, 201620 China
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles Donghua University, 2999 North Renmin Road Shanghai, 201620 China
- Dhaka University of Engineering & Technology Gazipur‐1707 Bangladesh
| | - Wanshuang Liu
- Center for Civil Aviation Composites Donghua University, 2999 North Renmin Road Shanghai, 201620 China
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles Donghua University, 2999 North Renmin Road Shanghai, 201620 China
| | - Yi Wei
- Center for Civil Aviation Composites Donghua University, 2999 North Renmin Road Shanghai, 201620 China
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles Donghua University, 2999 North Renmin Road Shanghai, 201620 China
| | - Qiuran Jiang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles Donghua University, 2999 North Renmin Road Shanghai, 201620 China
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31
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Optical Active Thermal Stable Nanocomposites Using Polybutadiene-Based Polyurethane and Graphene Quantum Dot-MnO2. INT J POLYM SCI 2022. [DOI: 10.1155/2022/2377803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Synthesis and characterization of new polybutadiene-based polyurethane, graphene quantum dot-MnO2 nanoparticles, and relative nanocomposites were set as the aim of current artwork. For this purpose, a one-pot polymerization approach was employed in preparation of polyurethane through the reaction of amine polyol and toluene diisocyanate (TDI) in presence of DBTDL catalyst. Nanocomposites were synthesized using 1 to 3 incorporation percent of graphene quantum dot-MnO2 nanoparticles in polymer matrix. 1H-NMR and FT-IR spectroscopies confirmed successful synthesis of reaction products including graphene quantum dot-MnO2, polyurethane, and nanocomposites. UV-vis and PL spectrophotometry techniques were applied for achieving optical information of samples. Optical properties of nanocomposites were reserved properly with no great quenching. Thermal stabilities, degradation rates, and thermal characteristics of polyurethane and nanocomposites were investigated using TGA/DTG and DSC analysis. Thermal stability showed direct relationship to nanoparticle content, and 3%wt nanocomposite showed improved thermal behaviour in comparison with pure PU. SEM, XRD, and AFM techniques proved successful nanocomposite synthesis with detecting nanoparticle species and fine nanoparticle dispersion with improved topographic and morphologic characteristics making GQD-MnO2 polyurethane nanocomposites a good candidate for using in optical active and thermal stable coatings.
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32
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Cross-Linking of Polypropylene via the Diels-Alder Reaction. Polymers (Basel) 2022; 14:polym14061176. [PMID: 35335509 PMCID: PMC8955959 DOI: 10.3390/polym14061176] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/02/2022] [Accepted: 03/10/2022] [Indexed: 11/29/2022] Open
Abstract
In this work, the possibility of preparing cross-linked polypropylene (PP) via Diels−Alder (DA) chemistry is explored. The overall strategy involves reaction of maleated polypropylene (the starting material), furfuryl amine (FFA), and bismaleimide (BM) as the cross-linking agent. The occurrence of reversible cross-linking was studied by checking the presence of relevant peaks in FTIR spectra, i.e., CH out-of-plane bending vibrations of the furan ring’s peak (γCH) at an absorption band of 730−734 cm−1, CH=CH of the BM aromatic ring’s stretching vibrations (υCH=CH) at an absorption band of 1510 cm−1, and the DA adduct (C-O-C, δDAring) at an absorption band of 1186 cm−1. In agreement with the spectroscopic characterization, the presence of a cross-linked network is also confirmed by rheology, namely the higher storage modulus (G′) compared with loss modulus (G″) value (G′ >> G″), as obtained via temperature sweep. Both the maleic anhydride (MA) content as well as the annealing temperature (50 °C and 120 °C) favor the DA reaction, while only partial de-cross-linking (retro DA) is observed at the higher temperature range of 150−200 °C. In addition, the products show higher mechanical robustness and thermal stability compared to the starting material.
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33
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Jin WS, Sahu P, Park SM, Jeon JH, Kim NI, Lee JH, Oh JS. Design of Self-Healing EPDM/Ionomer Thermoplastic Vulcanizates by Ionic Cross-Links for Automotive Application. Polymers (Basel) 2022; 14:polym14061156. [PMID: 35335487 PMCID: PMC8953676 DOI: 10.3390/polym14061156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 11/16/2022] Open
Abstract
The development of smart elastomeric materials with inherent self-repairing abilities after mechanical damage has important technological and scientific implications, particularly in regard to the durability and life cycle of rubber products. The interest in self-healing materials for automotive applications is rapidly growing along with the increasing importance of vehicle scratch quality and quantity. The creation of a reversible network by noncovalent ionic cross-linking in elastomer/rubber blends is an effective approach to generate the self-healing phenomenon, with reprocessing and recycling properties. In this work, thermoplastic vulcanizates (TPVs) were prepared using ethylene-propylene-diene (EPDM) polymers and high-acid-containing thermoplastic ionomers. Along with the general EPDM, maleic anhydride grafted EPDM (EPDM-g-MAH) was also used for the preparation of the TPVs. The strategy was based on a simple ionic crosslinking reaction between the carboxyl groups present in the ionomer and zinc oxide (ZnO), where the formation of reversible Zn2+ salt bondings exhibits the self-healing behavior. The heterogeneous blending of EPDM and ionomers was also used to investigate the thermal and mechanical properties of the TPVs. The experimental findings were further supported by the surface morphology of the fracture surfaces viewed using microscopy. The self-healing behavior of the TPVs has been identified by scratch resistance testing, where the EPDM-g-MAH TPVs showed excellent healing efficiency of the scratch surface. Therefore, this work provides an efficient approach to fabricate new ionically cross-linked thermoplastic vulcanizates with excellent mechanical and self-repairing properties for the skins of automotive interior door trims and instrument panel applications.
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Affiliation(s)
- Woo Seok Jin
- Department of Materials Engineering and Convergence Technology, ReCAPT, Gyeongsang National University, 501, Jinju-daero, Jinju 52828, Korea; (W.S.J.); (P.S.)
| | - Pranabesh Sahu
- Department of Materials Engineering and Convergence Technology, ReCAPT, Gyeongsang National University, 501, Jinju-daero, Jinju 52828, Korea; (W.S.J.); (P.S.)
| | - Sung Min Park
- With Advanced Passion & System, WAPS Co., Ltd., 8F, 45, Centum dong-ro, Haeundae-gu, Busan 48059, Korea;
| | - Jun Ha Jeon
- Industrial Materials Research Center, Korea Institute of Footwear & Leather Technology, 152, Danggamseo-ro, Busanjin-gu, Busan 47154, Korea;
| | - Nam Il Kim
- Energy Materials R&D Center, Korea Automotive Technology Institute, Cheonan 31214, Korea; (N.I.K.); (J.H.L.)
| | - Jae Hyeon Lee
- Energy Materials R&D Center, Korea Automotive Technology Institute, Cheonan 31214, Korea; (N.I.K.); (J.H.L.)
| | - Jeong Seok Oh
- Department of Materials Engineering and Convergence Technology, ReCAPT, Gyeongsang National University, 501, Jinju-daero, Jinju 52828, Korea; (W.S.J.); (P.S.)
- Correspondence: ; Tel.: +82-055-772-1658
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34
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Synthesis and characterization of thermally stable polyurea-TiO2 nanocomposites based on amine terminated polybutadiene. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04132-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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35
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Saed M, Gablier A, Terentjev EM. Exchangeable Liquid Crystalline Elastomers and Their Applications. Chem Rev 2022; 122:4927-4945. [PMID: 33596647 PMCID: PMC8915166 DOI: 10.1021/acs.chemrev.0c01057] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Indexed: 12/30/2022]
Abstract
This Review presents and discusses the current state of the art in "exchangeable liquid crystalline elastomers", that is, LCE materials utilizing dynamically cross-linked networks capable of reprocessing, reprogramming, and recycling. The focus here is on the chemistry and the specific reaction mechanisms that enable the dynamic bond exchange, of which there is a variety. We compare and contrast these different chemical mechanisms and the key properties of their resulting elastomers. In the conclusion, we discuss the most promising applications that are enabled by dynamic cross-linking and present a summary table: a library of currently available materials and their main characteristics.
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Affiliation(s)
- Mohand
O. Saed
- Cavendish Laboratory, University
of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Alexandra Gablier
- Cavendish Laboratory, University
of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Eugene M. Terentjev
- Cavendish Laboratory, University
of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, U.K.
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36
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van den Tempel P, Picchioni F, Bose RK. Designing End-of-life Recyclable Polymers via Diels-Alder Chemistry: A Review on the Kinetics of Reversible Reactions. Macromol Rapid Commun 2022; 43:e2200023. [PMID: 35238107 DOI: 10.1002/marc.202200023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/14/2022] [Indexed: 11/09/2022]
Abstract
The purpose of this review is to critically assess the kinetic behaviour of the furan/maleimide Diels-Alder click reaction. The popularity of this reaction is evident and still continues to grow, which is likely attributed to its reversibility at temperatures above 100°C, and due to its bio-based "roots" in terms of raw materials. This chemistry has been used to form thermo-reversible crosslinks in polymer networks, and thus allows the polymer field to design strong, but also end-of-life recyclable thermosets and rubbers. In this context, the rate at which the forward reaction (Diels-Alder for crosslinking) and its reverse (retro Diels-Alder for de-crosslinking) proceed as function of temperature is of crucial importance in assessing the feasibility of the design in real-life products. Differences in kinetics based from various studies are not well understood, but are potentially caused by chemical side groups, mass transfer limitations, and on the analysis methods being employed. In this work we attempt to place all the relevant studies in perspective with respect to each other, and thereby offer a general guide on how to assess their recycling kinetics. This review sheds light on the kinetics on the furan/maleimide Diels-Alder reaction. This popular reaction opens up a path to develop end-of-life recyclable polymer networks with self-healing properties. The factors affecting reaction kinetics are discussed, and the importance of accurate reaction kinetics in the context of polymer reprocessing is highlighted. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Paul van den Tempel
- Department of Chemical Engineering, Product Technology, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, The Netherlands
| | - Francesco Picchioni
- Department of Chemical Engineering, Product Technology, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, The Netherlands
| | - Ranjita K Bose
- Department of Chemical Engineering, Product Technology, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, The Netherlands
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Cheng K, Chortos A, Lewis JA, Clarke DR. Photoswitchable Covalent Adaptive Networks Based on Thiol-Ene Elastomers. ACS APPLIED MATERIALS & INTERFACES 2022; 14:4552-4561. [PMID: 35006669 DOI: 10.1021/acsami.1c22287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Covalent adaptive networks combine the advantages of cross-linked elastomers and dynamic bonding in a single system. In this work, we demonstrate a simple one-pot method to prepare thiol-ene elastomers that exhibit reversible photoinduced switching from an elastomeric gel to fluid state. This behavior can be generalized to thiol-ene cross-linked elastomers composed of different backbone chemistries (e.g., polydimethylsiloxane, polyethylene glycol, and polyurethane) and vinyl groups (e.g., allyl, vinyl ether, and acrylate). Photoswitching from the gel to fluid state occurs in seconds upon exposure to UV light and can be repeated over at least 180 cycles. These thiol-ene elastomers also exhibit the ability to heal, remold, and serve as reversible adhesives.
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Affiliation(s)
- Kezi Cheng
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Alex Chortos
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jennifer A Lewis
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - David R Clarke
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
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Ferretti A, Sinha S, Sagresti L, Araya-Hermosilla E, Prato M, Mattoli V, Pucci A, Brancato G. One-step functionalization of mildly and strongly reduced graphene oxide with maleimide: an experimental and theoretical investigation of the Diels-Alder [4+2] cycloaddition reaction. Phys Chem Chem Phys 2022; 24:2491-2503. [PMID: 35023509 DOI: 10.1039/d1cp04121e] [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
For large-scale graphene applications, such as the production of polymer-graphene nanocomposites, exfoliated graphene oxide (GO) and its reduced form (rGO) are presently considered to be very suitable starting materials, showing enhanced chemical reactivity with respect to pristine graphene, in addition to suitable electronic properties (i.e., tunable band gap). Among other chemical processes, a suitable way to obtain surface decoration of graphene is through a direct one-step Diels-Alder (DA) reaction, e.g. through the use of dienophile or diene moieties. However, the feasibility and extent of decoration largely depends on the specific graphene microstructure that in the case of rGO sheets is not easy to control and generally presents a high degree of inhomogeneity owing to various on-plane functionalization (e.g., epoxide and hydroxyl groups) or in-plane lattice defects. In an effort to gain some insights into the covalent functionalization of variably reduced GO samples, we present a combined experimental and theoretical study on the DA cycloaddition reaction of maleimide, a dienophile functional unit well-suited for chemical conjugation of polymers and macromolecules. In particular, we considered both mildly and strongly reduced GOs. Using thermogravimetry, Raman and X-Ray photoelectron spectroscopy, and elemental analysis we show evidence of variable chemical reactivity of rGO as a function of the residual oxygen content. Moreover, from quantum mechanical calculations carried out at the DFT level on different graphene reaction sites, we provide a more detailed molecular view to interpret experimental findings and to assess the reactivity series of different graphene modifications.
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Affiliation(s)
- Alfonso Ferretti
- Università di Pisa, Dipartimento di Ingegneria Civile ed Industriale, Largo Lucio Lazzarino 2, I-56124 Pisa, Italy
| | - Sourab Sinha
- Scuola Normale Superiore and CSGI, Piazza dei Cavalieri 7, I-56126 Pisa, Italy.
| | - Luca Sagresti
- Scuola Normale Superiore and CSGI, Piazza dei Cavalieri 7, I-56126 Pisa, Italy. .,Istituto Nazionale di Fisica Nucleare (INFN) sezione di Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy
| | - Esteban Araya-Hermosilla
- Center for Materials Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy
| | - Mirko Prato
- Materials Characterization Facility, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genoa, Italy
| | - Virgilio Mattoli
- Center for Materials Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy
| | - Andrea Pucci
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy.,CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, 56126 Pisa, Italy
| | - Giuseppe Brancato
- Scuola Normale Superiore and CSGI, Piazza dei Cavalieri 7, I-56126 Pisa, Italy. .,Istituto Nazionale di Fisica Nucleare (INFN) sezione di Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy
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Xu K, Chen G, Zhao M, He W, Hu Q, Pu Y. Transparent, self-recoverable, highly tough, puncture and tear resistant polyurethane supramolecular elastomer with fast self-healing capacity via "hard-soft" hard domain design. RSC Adv 2022; 12:2712-2720. [PMID: 35425297 PMCID: PMC8979244 DOI: 10.1039/d1ra07083e] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/10/2022] [Indexed: 11/21/2022] Open
Abstract
The integration of superior mechanical properties and fast healing efficiency for self-healing polyurethane supramolecular elastomers is challenging due to the confliction between high chain mobility for healing and high chain rigidity for mechanical properties. Herein, a strategy to design a "hard-soft" hard domain by the cooperation of quadruple hydrogen bonds (HBs) in the mainchain as restriction units and single HBs in the side chain as diffusion units is reported. The resulting transparent supramolecular elastomer exhibited fast self-recoverability, good puncture resistance and superior mechanical properties with a tensile strength of 20.5 MPa, an extensibility of 2043.7%, a toughness of 146.1 MJ m-3 and a tear resistance of 13.8 kJ m-2. Moreover, the fast self-healing capacity (healing efficiency > 82% within 3 h under moderate condition) was realized due to the soft effects of weak HBs in the side chain on the strong HBs in the mainchain. Taking advantage of the merits of the supramolecular elastomer, a flexible sensor was simply fabricated, which showed good self-repairable and stable sensing properties. Thus, the elastomer has great potential in the field of flexible electronics and wearable devices.
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Affiliation(s)
- Kangming Xu
- College of Materials Science and Engineering, Chongqing University of Arts and Sciences Chongqing 402160 China
| | - Guoqing Chen
- College of Materials Science and Engineering, Chongqing University of Arts and Sciences Chongqing 402160 China
| | - Mingjie Zhao
- College of Materials Science and Engineering, Chongqing University of Arts and Sciences Chongqing 402160 China
| | - Weiyi He
- College of Materials Science and Engineering, Chongqing University of Arts and Sciences Chongqing 402160 China
| | - Qiaoman Hu
- College of Materials Science and Engineering, Chongqing University of Arts and Sciences Chongqing 402160 China
| | - Yong Pu
- College of Materials Science and Engineering, Chongqing University of Arts and Sciences Chongqing 402160 China
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40
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Unravelling the effect of healing conditions and vulcanizing additives on the healing performance of rubber networks. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124399] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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41
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Chang S, Kim Y, Park H, Park K. Synthesis and analysis of thermally degradable polybutadiene containing
Diels–Alder
adduct. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sanghoon Chang
- School of Chemical Engineering and Material Science Chung‐Ang University Dongjak‐gu, Seoul Republic of Korea
| | - Yongkyun Kim
- School of Chemical Engineering and Material Science Chung‐Ang University Dongjak‐gu, Seoul Republic of Korea
| | - Haneul Park
- The 4th R&D institute, 2nd Directorate Agency for Defence Development Daejeon Republic of Korea
| | - Kwangyong Park
- School of Chemical Engineering and Material Science Chung‐Ang University Dongjak‐gu, Seoul Republic of Korea
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42
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Xiao Y, Liu P, Wang WJ, Li BG. Dynamically Cross-Linked Polyolefin Elastomers with Highly Improved Mechanical and Thermal Performance. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01249] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yangke Xiao
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Pingwei Liu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
- Institute of Zhejiang University - Quzhou, Quzhou 324000, China
| | - Wen-Jun Wang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
- Institute of Zhejiang University - Quzhou, Quzhou 324000, China
| | - Bo-Geng Li
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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43
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Xue Y, Li C, Wang W, Liu Z, Guo Z, Tan J, Zhang Q. Preparation of Poly(thiol-urethane) Covalent Adaptable Networks Based on Multiple-Types Dynamic Motifs. Macromol Rapid Commun 2021; 43:e2100510. [PMID: 34643989 DOI: 10.1002/marc.202100510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/25/2021] [Indexed: 11/10/2022]
Abstract
To solve the issue of polymeric materials recycling, developing intrinsic self-healing materials containing dynamic bonds has attracted many researchers' highly concerning. However, the tradeoff between their mechanical strength and stretchability always does not avoid. Herein, to surmount the above tradeoff, metal-ligand (Cu2+ -S) interactions are introduced into the cross-linking polythiourethane covalent adaptable networks (PTU CANs) with three kinds of dynamic motifs (thiourethane, disulfide, and hydrogen bonds). When the molar ratio of Cu2+ to S is 6.37%, the break strength (9.41 ± 0.34 MPa) and Young's modulus (26.02 ± 0.55 MPa) of the metal-ligand coordination complex PTU (Cu2+ -PTU-3) dramatically increase, whereas the peak strain almost does not decline (454.44 ± 3.95%). To conduct the repairing, Cu2+ -PTU-3 is further confirmed excellent repairing capability. Therefore, these new PTU CANs have significant potential for the new self-healing materials.
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Affiliation(s)
- Ying Xue
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Department of Applied Chemistry Northwestern Polytechnical University, Xi'an, 710072, China
| | - Chunmei Li
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Department of Applied Chemistry Northwestern Polytechnical University, Xi'an, 710072, China
| | - Wenyan Wang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Department of Applied Chemistry Northwestern Polytechnical University, Xi'an, 710072, China
| | - Zongxu Liu
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Department of Applied Chemistry Northwestern Polytechnical University, Xi'an, 710072, China
| | - Zijian Guo
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Department of Applied Chemistry Northwestern Polytechnical University, Xi'an, 710072, China
| | - Jiaojun Tan
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Qiuyu Zhang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Department of Applied Chemistry Northwestern Polytechnical University, Xi'an, 710072, China
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Larrue C, Bounor-Legaré V, Cassagnau P. Enhancement of EPDM Crosslinked Elastic Properties by Association of Both Covalent and Ionic Networks. Polymers (Basel) 2021; 13:polym13183161. [PMID: 34578061 PMCID: PMC8473281 DOI: 10.3390/polym13183161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/10/2021] [Accepted: 09/16/2021] [Indexed: 12/03/2022] Open
Abstract
The objective of this study was to replace elastomer crosslinking based on chemical covalent bonds by reversible systems under processing. One way is based on ionic bonds creation, which allows a physical crosslinking while keeping the process reversibility. However, due to the weak elasticity recovery of such a physical network after a long period of compression, the combination of both physical and chemical networks was studied. In that frame, an ethylene-propylene-diene terpolymer grafted with maleic anhydride (EPDM-g-MA) was crosslinked with metal salts and/or dicumyl peroxide (DCP). Thus, the influence of these two types of crosslinking networks and their combination were studied in detail in terms of compression set. The second part of this work was focused on the influence of different metallic salts (KOH, ZnAc2) and the sensitivity to the water of the physical crosslinking network. Finally, the combination of ionic and covalent network allowed combining the processability and better mechanical properties in terms of recovery elasticity. KAc proved to be the best ionic candidate to avoid water degradation of the ionic network and then to preserve the elasticity recovery properties under aging.
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45
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Thermoreversible and Recycling Properties of Ethylene Propylene Diene Rubber Based on Diels-Alder Reaction. Macromol Res 2021. [DOI: 10.1007/s13233-021-9063-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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46
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Rahmatpanah Z, Nikje MMA. Thermally Stable Magnetic Polyurethane Nanocomposites Prepared from Functionalized Polybutadiene: Novel Approach to the Polybutadiene Chemical Modification. RUSS J APPL CHEM+ 2021. [DOI: 10.1134/s1070427221060173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Tang ZH, Zeng H, Wei SQ, Wu SW, Guo BC. Structural Manipulation of Aminal-crosslinked Polybutadiene for Recyclable and Healable Elastomers. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2626-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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49
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Chiong JA, Tran H, Lin Y, Zheng Y, Bao Z. Integrating Emerging Polymer Chemistries for the Advancement of Recyclable, Biodegradable, and Biocompatible Electronics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2101233. [PMID: 34014619 PMCID: PMC8292855 DOI: 10.1002/advs.202101233] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Indexed: 05/02/2023]
Abstract
Through advances in molecular design, understanding of processing parameters, and development of non-traditional device fabrication techniques, the field of wearable and implantable skin-inspired devices is rapidly growing interest in the consumer market. Like previous technological advances, economic growth and efficiency is anticipated, as these devices will enable an augmented level of interaction between humans and the environment. However, the parallel growing electronic waste that is yet to be addressed has already left an adverse impact on the environment and human health. Looking forward, it is imperative to develop both human- and environmentally-friendly electronics, which are contingent on emerging recyclable, biodegradable, and biocompatible polymer technologies. This review provides definitions for recyclable, biodegradable, and biocompatible polymers based on reported literature, an overview of the analytical techniques used to characterize mechanical and chemical property changes, and standard policies for real-life applications. Then, various strategies in designing the next-generation of polymers to be recyclable, biodegradable, or biocompatible with enhanced functionalities relative to traditional or commercial polymers are discussed. Finally, electronics that exhibit an element of recyclability, biodegradability, or biocompatibility with new molecular design are highlighted with the anticipation of integrating emerging polymer chemistries into future electronic devices.
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Affiliation(s)
- Jerika A. Chiong
- Department of ChemistryStanford UniversityStanfordCA94305‐5025USA
| | - Helen Tran
- Department of ChemistryUniversity of TorontoTorontoONM5S 3H6Canada
| | - Yangju Lin
- Department of Chemical EngineeringStanford UniversityStanfordCA94305‐5025USA
| | - Yu Zheng
- Department of ChemistryStanford UniversityStanfordCA94305‐5025USA
| | - Zhenan Bao
- Department of Chemical EngineeringStanford UniversityStanfordCA94305‐5025USA
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Araujo-Morera J, Verdejo R, López-Manchado MA, Hernández Santana M. Sustainable mobility: The route of tires through the circular economy model. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 126:309-322. [PMID: 33794443 DOI: 10.1016/j.wasman.2021.03.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/06/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Until nowadays, the concept of the 3Rs (Reduce, Reuse, Recycle) has tried to develop responsible consumption habits. Nonetheless, the rise of ecological thinking has generated the appearance of four new Rs in addition to these basic 3Rs; the currently 7Rs (Reduce, Reuse, Recycle, Redesign, Renew, Repair and Recover) which refer to the actions necessary to achieve the change towards a circular economy (CE) model. This model aims at extending the lifetime of the resources through their rational and efficient use to generate value repeatedly, reducing costs and waste. In this review, we examine the route followed by tires from the CE perspective, analyzing end-of-life strategies that aim to improve the circular flow of tire rubber materials. We discuss the most relevant studies on the "7Rs" concepts applied to tires, comparing different scientific approaches, as well as their industrial and commercial implementation. We also illustrate the drawbacks and feasibility of each of the R-hierarchy strategies. From the early stages of production to the post-consumption step, the path that tires trail within this CE model evidences the commitment and efforts towards the development of effective management schemes for achieving a real sustainable mobility.
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Affiliation(s)
- Javier Araujo-Morera
- Institute of Polymer Science and Technology ICTP-CSIC, Juan de la Cierva 3, Madrid 28006, Spain
| | - Raquel Verdejo
- Institute of Polymer Science and Technology ICTP-CSIC, Juan de la Cierva 3, Madrid 28006, Spain.
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