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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Kumar V, Kuang W, Fifield LS. Carbon Fiber-Based Vitrimer Composites: A Path toward Current Research That Is High-Performing, Useful, and Sustainable. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3265. [PMID: 38998348 PMCID: PMC11243385 DOI: 10.3390/ma17133265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 06/19/2024] [Accepted: 06/24/2024] [Indexed: 07/14/2024]
Abstract
In the polymeric material industry, thermosets and related composites have played a substantial role in the production of rubber and plastics. One important subset of these is thermoset composites with carbon reinforcement. The incorporation of carbon fillers and fibers gives polymeric materials improved electrical and mechanical properties, among other benefits. However, the covalently crosslinked network of thermosets presents significant challenges for recycling and reprocessing because of its intractable nature. The introduction of vitrimer materials opens a new avenue to produce biodegradable and recyclable thermosets. Carbon-reinforced vitrimer composites are pursued for high-performance, long-lasting materials with attractive physical properties, the ability to be recycled and processed, and other features that respond uniquely to stimuli. The development of carbon-reinforced vitrimer composites over the last few years is summarized in this article. First, an overview of vitrimers and the methods used to prepare carbon fiber-reinforced vitrimer composites is provided. Because of the vitrimer nature of such composites, reprocessing, healing, and recycling are viable ways to greatly extend their service life; these approaches are thoroughly explained and summarized. The conclusion is our prediction for developing carbon-based vitrimer composites.
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Affiliation(s)
| | | | - Leonard S. Fifield
- Pacific Northwest National Laboratory, Richland, WA 99354, USA; (V.K.); (W.K.)
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3
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Karatrantos AV, Couture O, Hesse C, Schmidt DF. Molecular Simulation of Covalent Adaptable Networks and Vitrimers: A Review. Polymers (Basel) 2024; 16:1373. [PMID: 38794566 PMCID: PMC11125108 DOI: 10.3390/polym16101373] [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: 04/02/2024] [Revised: 04/22/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Covalent adaptable networks and vitrimers are novel polymers with dynamic reversible bond exchange reactions for crosslinks, enabling them to modulate their properties between those of thermoplastics and thermosets. They have been gathering interest as materials for their recycling and self-healing properties. In this review, we discuss different molecular simulation efforts that have been used over the last decade to investigate and understand the nanoscale and molecular behaviors of covalent adaptable networks and vitrimers. In particular, molecular dynamics, Monte Carlo, and a hybrid of molecular dynamics and Monte Carlo approaches have been used to model the dynamic bond exchange reaction, which is the main mechanism of interest since it controls both the mechanical and rheological behaviors. The molecular simulation techniques presented yield sufficient results to investigate the structure and dynamics as well as the mechanical and rheological responses of such dynamic networks. The benefits of each method have been highlighted. The use of other tools such as theoretical models and machine learning has been included. We noticed, amongst the most prominent results, that stress relaxes as the bond exchange reaction happens, and that at temperatures higher than the glass transition temperature, the self-healing properties are better since more bond BERs are observed. The lifetime of dynamic covalent crosslinks follows, at moderate to high temperatures, an Arrhenius-like temperature dependence. We note the modeling of certain properties like the melt viscosity with glass transition temperature and the topology freezing transition temperature according to a behavior ruled by either the Williams-Landel-Ferry equation or the Arrhenius equation. Discrepancies between the behavior in dissociative and associative covalent adaptable networks are discussed. We conclude by stating which material parameters and atomistic factors, at the nanoscale, have not yet been taken into account and are lacking in the current literature.
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Affiliation(s)
- Argyrios V. Karatrantos
- Materials Research and Technology, Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (O.C.); (C.H.); (D.F.S.)
| | - Olivier Couture
- Materials Research and Technology, Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (O.C.); (C.H.); (D.F.S.)
- University of Luxembourg, 2, Avenue de l’Université, L-4365 Esch-sur-Alzette, Luxembourg
| | - Channya Hesse
- Materials Research and Technology, Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (O.C.); (C.H.); (D.F.S.)
- University of Luxembourg, 2, Avenue de l’Université, L-4365 Esch-sur-Alzette, Luxembourg
| | - Daniel F. Schmidt
- Materials Research and Technology, Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (O.C.); (C.H.); (D.F.S.)
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4
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Liu Y, Wang S, Dong J, Huo P, Zhang D, Han S, Yang J, Jiang Z. External Stimuli-Induced Welding of Dynamic Cross-Linked Polymer Networks. Polymers (Basel) 2024; 16:621. [PMID: 38475305 DOI: 10.3390/polym16050621] [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: 01/28/2024] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 03/14/2024] Open
Abstract
Thermosets have been crucial in modern engineering for decades, finding applications in various industries. Welding cross-linked components are essential in the processing of thermosets for repairing damaged areas or fabricating complex structures. However, the inherent insolubility and infusibility of thermoset materials, attributed to their three-dimensional network structure, pose challenges to welding development. Incorporating dynamic chemical bonds into highly cross-linked networks bridges the gap between thermosets and thermoplastics presenting a promising avenue for innovative welding techniques. External stimuli, including thermal, light, solvent, pH, electric, and magnetic fields, induce dynamic bonds' breakage and reformation, rendering the cross-linked network malleable. This plasticity facilitates the seamless linkage of two parts to an integral whole, attracting significant attention for potential applications in soft actuators, smart devices, solid batteries, and more. This review provides a comprehensive overview of dynamic bonds employed in welding dynamic cross-linked networks (DCNs). It extensively discusses the classification and fabrication of common epoxy DCNs and acrylate DCNs. Notably, recent advancements in welding processes based on DCNs under external stimuli are detailed, focusing on the welding dynamics among covalent adaptable networks (CANs).
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Affiliation(s)
- Yun Liu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150040, China
| | - Sheng Wang
- Key Laboratory of Bio-Based Materials Science & Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Jidong Dong
- Key Laboratory of Bio-Based Materials Science & Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Pengfei Huo
- Key Laboratory of Bio-Based Materials Science & Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Dawei Zhang
- Key Laboratory of Bio-Based Materials Science & Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Shuaiyuan Han
- Key Laboratory of Bio-Based Materials Science & Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Jie Yang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Zaixing Jiang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150040, China
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5
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Zhang G, Zhang Q, Guo Z, Li C, Ge F, Zhang Q. Reconfiguration, Welding, Reprogramming, and Complex Shape Transformation of An Optical Shape Memory Polymer Network Enabled by Patterned Secondary Crosslinking. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306312. [PMID: 37817361 DOI: 10.1002/smll.202306312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/03/2023] [Indexed: 10/12/2023]
Abstract
Stimuli-triggered generation of complicated 3D shapes from 2D strips or plates without using sophisticated molds is desirable and achieving such 2D-to-3D shape transformation in combination with shape reconfiguration, welding, and reprogramming on a single material is very challenging. Here, a convenient and facile strategy using the solution of a disulfide-containing diamine for patterned secondary crosslinking of an optical shape-memory polymer network is developed to integrate the above performances. The dangling thiolectones attached to the backbones react with the diamine in the solution-deposited region so that the secondary crosslinking may not only weld individual strips into assembled 3D shapes but also suppress the relaxation of the deformed polymer chains to different extents for shape reconfiguration or heating-induced complex 3D deformations. In addition, as the dynamic disulfide bonds can be thermally activated to erase the initial programming information and the excessive thiolectones are available for subsequent patterned crosslinking, the material also allows shape reprogramming. Combining welding with patterning treatment, it is further demonstrated that a gripper can be assembled and photothermally controlled to readily grasp an object.
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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, P. R. China
| | - Qing 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, P. R. China
| | - Zijian Guo
- 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, P. R. 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, P. R. China
| | - Feijie Ge
- 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, P. R. 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, P. R. China
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6
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Li K, Tran NV, Pan Y, Wang S, Jin Z, Chen G, Li S, Zheng J, Loh XJ, Li Z. Next-Generation Vitrimers Design through Theoretical Understanding and Computational Simulations. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2302816. [PMID: 38058273 PMCID: PMC10837359 DOI: 10.1002/advs.202302816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 09/03/2023] [Indexed: 12/08/2023]
Abstract
Vitrimers are an innovative class of polymers that boast a remarkable fusion of mechanical and dynamic features, complemented by the added benefit of end-of-life recyclability. This extraordinary blend of properties makes them highly attractive for a variety of applications, such as the automotive sector, soft robotics, and the aerospace industry. At their core, vitrimer materials consist of crosslinked covalent networks that have the ability to dynamically reorganize in response to external factors, including temperature changes, pressure variations, or shifts in pH levels. In this review, the aim is to delve into the latest advancements in the theoretical understanding and computational design of vitrimers. The review begins by offering an overview of the fundamental principles that underlie the behavior of these materials, encompassing their structures, dynamic behavior, and reaction mechanisms. Subsequently, recent progress in the computational design of vitrimers is explored, with a focus on the employment of molecular dynamics (MD)/Monte Carlo (MC) simulations and density functional theory (DFT) calculations. Last, the existing challenges and prospective directions for this field are critically analyzed, emphasizing the necessity for additional theoretical and computational advancements, coupled with experimental validation.
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Affiliation(s)
- Ke Li
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore, 138634, Republic of Singapore
| | - Nam Van Tran
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yuqing Pan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Sheng Wang
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Singapore, 138634, Singapore
| | - Zhicheng Jin
- Laboratory for Biomaterials and Drug Delivery, The Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Guoliang Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Shuzhou Li
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Jianwei Zheng
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, #16-16 Connexis, Singapore, 138632, Republic of Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore, 138634, Republic of Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Singapore, 138634, Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore, 138634, Republic of Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Singapore, 138634, Singapore
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117576, Singapore
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7
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Jamnongpak W, Tiptipakorn S, Arumugam H, Charoensuk K, Karagiannidis P, Rimdusit S. Development of NIR light-responsive shape memory composites based on bio-benzoxazine/bio-urethane copolymers reinforced with graphene. NANOSCALE ADVANCES 2024; 6:499-510. [PMID: 38235100 PMCID: PMC10790969 DOI: 10.1039/d3na00647f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 12/03/2023] [Indexed: 01/19/2024]
Abstract
In this work, shape memory polymers (SMPs) were developed from a combination of a bio-based benzoxazine (BZ) monomer and polyurethane prepolymer (PU-prepolymer), both derived from bio-based raw materials. The bio-based BZ monomer (V-fa monomer) was synthesized through a Mannich condensation reaction using vanillin, paraformaldehyde, and furfurylamine. The bio-based PU-prepolymer was obtained by reacting palm oil polyol (MW = 1400 Da) and toluene diisocyanate (TDI). To investigate the curing behavior of poly(V-fa/urethane), with a mass ratio of 50/50, differential scanning calorimetry was employed. The structure of the resulting poly(V-fa/urethane) was confirmed using Fourier transform infrared spectroscopy. Furthermore, the synthesized V-fa/urethane copolymers with weight ratios of 70/30, 60/40, 50/50 and 40/60 were observed to exhibit shape memory behaviors induced by near-infrared irradiation (808 nm). Poly(V-fa/urethane), specifically with a mass ratio of 50/50, demonstrated superior shape memory performance. It exhibited a remarkable capacity to retain the temporary shape up to 90%, achieve 99% shape recovery, and exhibit a recovery time of 25 s. The shape memory properties were further improved with the addition of 3 wt% graphene nanoplatelets (GNPs), exhibiting an improvement in the shape fixity value to 94%, and shape recovery time value to 16 s. Moreover, our findings suggest that 60/40 poly(V-fa/urethane) reinforced with 3 wt% GNPs possesses favorable characteristics for applications as multiple SMPs, with shape fixity values of 97% and 94%, and shape recovery values of 96% and 89% for the first and second shapes, respectively.
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Affiliation(s)
- Weerapong Jamnongpak
- Center of Excellence in Polymeric Materials for Medical Practice Devices, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand
| | - Sunan Tiptipakorn
- Department of Chemistry, Faculty of Liberal Arts and Science, Kasetsart University Nakhon Pathom 73140 Thailand
| | - Hariharan Arumugam
- Center of Excellence in Polymeric Materials for Medical Practice Devices, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand
| | - Krittapas Charoensuk
- Center of Excellence in Polymeric Materials for Medical Practice Devices, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand
| | | | - Sarawut Rimdusit
- Center of Excellence in Polymeric Materials for Medical Practice Devices, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand
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Sarrafan S, Li G. On Lightweight Shape Memory Vitrimer Composites. ACS APPLIED POLYMER MATERIALS 2024; 6:154-169. [PMID: 38230367 PMCID: PMC10788861 DOI: 10.1021/acsapm.3c01749] [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: 08/02/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 01/18/2024]
Abstract
Lightweight materials are highly desired in many engineering applications. A popular approach to obtain lightweight polymers is to prepare polymeric syntactic foams by dispersing hollow particles, such as hollow glass microbubbles (HGMs), in a polymer matrix. Integrating shape memory vitrimers (SMVs) in fabricating these syntactic foams enhances their appeal due to the multifunctionality of SMVs. The SMV-based syntactic foams have many potential applications, including actuators, insulators, and sandwich cores. However, there is a knowledge gap in understanding the effect of the HGM volume fraction on different material properties and behaviors. In this study, we prepared an SMV-based syntactic foam to investigate the influence of the HGM volume fractions on a broad set of properties. Four sample groups, containing 40, 50, 60, and 70% HGMs by volume, were tested and compared to a control pure SMV group. A series of analyses and various chemical, physical, mechanical, thermal, rheological, and functional experiments were conducted to explore the feasibility of ultralight foams. Notably, the effect of HGM volume fractions on the rheological properties was methodically evaluated. The self-healing capability of the syntactic foam was also assessed for healing at low and high temperatures. This study proves the viability of manufacturing multifunctional ultralightweight SMV-based syntactic foams, which are instrumental for designing ultralightweight engineering structures and devices.
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Affiliation(s)
- Siavash Sarrafan
- Department of Mechanical & Industrial
Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Guoqiang Li
- Department of Mechanical & Industrial
Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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9
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Feng Y, Nie Z, Chen J, Gong K, Shan Y, Dong F, Fan X, Qi S. Tuning the Dynamic Properties of Epoxy Vitrimers via Bioinspired Polymer-Nanoparticle Bond Dynamics. ACS Macro Lett 2023; 12:1201-1206. [PMID: 37610013 DOI: 10.1021/acsmacrolett.3c00406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
In this work, Fe3O4 nanoparticles anchored with dopamine molecules were developed via bioinspired iron-catechol coordination interactions, and the dopamine-modified Fe3O4 surface was linked to the matrix through strong interfacial interactions between the nanoparticles and the epoxy vitrimer. Results showed that the typical dynamic parameters of vitrimer could be readily adjusted in the epoxy vitrimer composites. These findings demonstrate that it is efficient to adjust the dynamic properties of vitrimers by introducing the metal-coordination bonds into epoxy vitrimer networks. The synergy of metal-catechol coordination and transesterification enriched the mechanism of dynamic regulation. In addition, the epoxy vitrimer composites were responsive to temperature and near-infrared light. The scratch could be successfully healed with 1 min on the surface of vitrimer composites under NIR irradiation even for the 1% addition of Fe3O4 nanoparticles. This approach shows potential to be generally applicable to different types of metal-coordination systems.
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Affiliation(s)
- Yang Feng
- Shannxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shannxi 710071, P.R. China
| | - Zhuguang Nie
- Shannxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shannxi 710071, P.R. China
| | - Jinqiu Chen
- Shannxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shannxi 710071, P.R. China
| | - Kaijie Gong
- Shannxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shannxi 710071, P.R. China
| | - Yiyi Shan
- Shannxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shannxi 710071, P.R. China
| | - Fanghong Dong
- Shannxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shannxi 710071, P.R. China
| | - Xiaodong Fan
- Shannxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shannxi 710071, P.R. China
| | - Shuhua Qi
- Shannxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shannxi 710071, P.R. China
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10
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Diodati LE, Liu S, Rinaldi-Ramos CM, Sumerlin BS. Magnetic Nanoparticles Improve Flow Rate and Enable Self-Healing in Covalent Adaptable Networks. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37384942 DOI: 10.1021/acsami.3c06329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Covalent adaptable networks (CANs) combine the mechanical and chemical stability of thermosets with the reprocessability of thermoplastics through the incorporation of stimuli-responsive dynamic crosslinks. To allow for processing through induction heating, we have created associative CANs that include fillers in the polymer matrix for efficient heat transfer. While the inclusion of inorganic fillers often decreases flow rate in CANs and complicates reprocessing of the material, the presence of Fe3O4 nanoparticles had no detrimental effect on flow behavior in a vinylogous urethane vitrimer, an observation we attribute to the catalytic nature of nanoparticles on the dynamic exchange chemistry. We employed two methods of nanoparticle incorporation: blending bare nanoparticles and crosslinking chemically modified nanoparticles. The vitrimers with covalently crosslinked nanoparticles exhibited a decreased relaxation time compared to those with blended nanoparticles. The magnetic character of the Fe3O4 nanoparticles enabled self-healing of the vitrimer composite materials upon exposure to an alternating electromagnetic field during induction heating.
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Affiliation(s)
- Lily E Diodati
- George and Josephine Butler Polymer Research Laboratory, Center of Macromolecular Science and Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Sitong Liu
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Carlos M Rinaldi-Ramos
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Brent S Sumerlin
- George and Josephine Butler Polymer Research Laboratory, Center of Macromolecular Science and Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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11
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Sharma H, Krishnakumar B, Dickens TJ, Yun GJ, Kumar A, Rana S. A bibliometric survey of research trends in vitrimer. Heliyon 2023; 9:e17350. [PMID: 37441386 PMCID: PMC10333614 DOI: 10.1016/j.heliyon.2023.e17350] [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: 04/06/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023] Open
Abstract
The recent trends of vitrimer studies enhance the thermoset material with superior properties, therefore, it is particularly important to address the critical scientific inquiries in this area using their research metrics. The reported vitrimer systems have been highly required for future real-time applications; however, the inquisitiveness of material exchange mechanisms extends the research studies further. Significantly, more scientific information's are required to achieve the evident prospective outcomes via these materials. This article highlights the trends and developments of the most relevant publications, authors, articles, countries, and keywords in the vitrimer research field over the past 10 years. The represented bibliometric survey would elevate the basic understanding of the current vitrimer research stats and also help follow the particular research community to learn and develop insight. To generate bibliometric networks, bibliometric data has obtained from Scopus and visualised in VOS-viewer; as an overview of that, the highest number of publications were from China, United States, France, United Kingdom, and Spain.
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Affiliation(s)
- Harsh Sharma
- University of Petroleum and Energy Studies (UPES), School of Engineering, Energy Acres, Bidholi, Dehradun, Uttarakhand 248007, India
| | - Balaji Krishnakumar
- Department of Industrial & Manufacturing Engineering, High-Performance Materials Institute, FAMU-FSU College of Engineering, Tallahassee, FL, 32310, USA
| | - Tarik J. Dickens
- Department of Industrial & Manufacturing Engineering, High-Performance Materials Institute, FAMU-FSU College of Engineering, Tallahassee, FL, 32310, USA
| | - Gun Jin Yun
- Department of Aerospace Engineering, Seoul National University, Gwanak-gu Gwanak-ro 1, Seoul, 151-744, South Korea
| | - Ajay Kumar
- University of Petroleum and Energy Studies (UPES), School of Engineering, Energy Acres, Bidholi, Dehradun, Uttarakhand 248007, India
| | - Sravendra Rana
- University of Petroleum and Energy Studies (UPES), School of Engineering, Energy Acres, Bidholi, Dehradun, Uttarakhand 248007, India
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12
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Kim W, Kim YM, Song S, Kim E, Kim DG, Jung YC, Yu WR, Na W, Choi YS. Manufacture of antibacterial carbon fiber-reinforced plastics (CFRP) using imine-based epoxy vitrimer for medical application. Heliyon 2023; 9:e16945. [PMID: 37332980 PMCID: PMC10272483 DOI: 10.1016/j.heliyon.2023.e16945] [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: 11/18/2022] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/20/2023] Open
Abstract
An antibacterial carbon fiber-reinforced plastics (CFRP) was manufactured based on a vitrimer containing imine groups. A liquid curing agent was prepared to include an imine group in the matrix, and was synthesized without a simple mixing reaction and any purification process. The vitrimer used as the matrix for CFRP was prepared by reacting a commercial epoxy with a synthesized curing agent. The structural and thermal properties of the vitrimer were determined by Fourier transform-infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). In addition, the temperature-dependent behavior of the vitrimer was characterized by stress relaxation, reshaping, and shape memory experiments. The mechanical properties of composites fabricated using vitrimer were fully analyzed by tensile, flexural, short-beam strength, and Izod impact tests and had mechanical properties similar to reference material. Moreover, both the vitrimer and the vitrimer composites showed excellent antibacterial activity against Staphylococcus aureus and Escherichia coil due to the imine group inside the vitrimer. Therefore, vitrimer composites have potential for applications requiring antimicrobial properties, such as medical devices.
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Affiliation(s)
- Wonbin Kim
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
| | - Yong Min Kim
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
- Department of Material Science and Engineering and Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul, 151-742, Republic of Korea
| | - SeungHyeon Song
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
- Functional Soft Materials Laboratory, School of Chemical Engineering Jeonbuk National University, Beakje-dearo 567, Deokjin-gu, 54896, Jeonju, Republic of Korea
| | - Eunjung Kim
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
- Department of Material Science and Engineering and Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul, 151-742, Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, Republic of Korea
| | - Yong Chae Jung
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
| | - Woong-Ryeol Yu
- Department of Material Science and Engineering and Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul, 151-742, Republic of Korea
| | - WonJin Na
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
| | - Yong-Seok Choi
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
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13
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Liang H, Wei Y, Ji Y. Magnetic-responsive Covalent Adaptable Networks. Chem Asian J 2023; 18:e202201177. [PMID: 36645376 DOI: 10.1002/asia.202201177] [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: 11/21/2022] [Revised: 01/07/2023] [Accepted: 01/16/2023] [Indexed: 01/17/2023]
Abstract
Covalent adaptable networks (CANs) are reprocessable polymers whose structural arrangement is based on the recombination of dynamic covalent bonds. Composite materials prepared by incorporating magnetic particles into CANs attract much attention due to their remote and precise control, fast response speed, high biological safety and strong penetration of magnetic stimuli. These properties often involve magnetothermal effect and direct magnetic-field guidance. Besides, some of them can also respond to light, electricity or pH values. Thus, they are favorable for soft actuators since various functions are achieved such as magnetic-assisted self-healing (heating or at ambient temperature), welding (on land or under water), shape-morphing, and so on. Although magnetic CANs just start to be studied in recent two years, their advances are promised to expand the practical applications in both cutting-edge academic and engineering fields. This review aims to summarize recent progress in magnetic-responsive CANs, including their design, synthesis and application.
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Affiliation(s)
- Huan Liang
- The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Yen Wei
- The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.,Department of Chemistry, Center for Nanotechnology and Institute of Biomedical Technology, Chung-Yuan Christian University Chung-Li, 32023, Taiwan, P. R. China
| | - Yan Ji
- The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
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14
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Wang CC, Xie MJ, Zhang R, Cao J, Tang MZ, Xu YX. Improved strength, creep resistance and recyclability of polyisoprene vitrimers by bottom-up construction of inhomogeneous network. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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15
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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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16
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Perego A, Khabaz F. Creep and Recovery Behavior of Vitrimers with Fast Bond Exchange Rate. Macromol Rapid Commun 2023; 44:e2200313. [PMID: 35856395 DOI: 10.1002/marc.202200313] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/07/2022] [Indexed: 01/11/2023]
Abstract
Vitrimers encompass the desirable mechanical properties of thermosets with the recyclability of thermoplastics. This ability arises from the rearrangement of the vitrimer covalent network upon heating via a bond shuffling mechanism while its cross-link density remains preserved. This unique feature makes vitrimers interesting candidates for the design of materials that combine dimensional stability at high temperatures and solvent resistance with the ability to be reshaped and processed. Despite these advantages, vitrimer exhibits significant creep at operating conditions where thermosets show little or no creep. As the mechanical properties of vitrimers not only depend on their chemical composition but also on the dynamics of the polymer chains, molecular dynamics (MD) simulations can provide detailed molecular mechanisms of the system of interest under macroscopic stress-induced deformations. In this regard, the recently developed MD/Monte Carlo simulation methodology capable of capturing the bond exchange mechanics in vitrimers is used to study the creep and recovery response of a coarse-grained model thermoset and vitrimer with a fast bond exchange rate. The time-stress superposition principle is then successfully applied to the creep response. The resulting universal curves enable us to predict the long-time creep behavior of both systems extending the timescale from 4 to over 10 orders of magnitude.
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Affiliation(s)
- Alessandro Perego
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, OH, 44325, USA
| | - Fardin Khabaz
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, OH, 44325, USA.,Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, OH, 44325, USA
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17
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Li J, Sun J, Lv K, Ji Y, Huang X, Bai Y, Wang J, Jin J, Shi S, Liu J. Organic-inorganic composite polyurethane vitrimers with high toughness, self-healing ability and recyclability. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Lee G, Song HY, Choi S, Kim CB, Hyun K, Ahn SK. Harnessing β-Hydroxyl Groups in Poly(β-Amino Esters) toward Robust and Fast Reprocessing Covalent Adaptable Networks. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gyuri Lee
- School of Chemical Engineering, Pusan National University, Busan46241, Republic of Korea
| | - Hyeong Yong Song
- Institute for Environment and Energy, Pusan National University, Busan46241, Republic of Korea
| | - Subi Choi
- School of Chemical Engineering, Pusan National University, Busan46241, Republic of Korea
| | - Chae Bin Kim
- School of Chemical Engineering, Pusan National University, Busan46241, Republic of Korea
- Department of Polymer Science and Engineering, Pusan National University, Busan46241, Republic of Korea
| | - Kyu Hyun
- School of Chemical Engineering, Pusan National University, Busan46241, Republic of Korea
- Institute for Environment and Energy, Pusan National University, Busan46241, Republic of Korea
| | - Suk-kyun Ahn
- School of Chemical Engineering, Pusan National University, Busan46241, Republic of Korea
- Department of Polymer Science and Engineering, Pusan National University, Busan46241, Republic of Korea
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Sharma H, Rana S, Singh P, Hayashi M, Binder WH, Rossegger E, Kumar A, Schlögl S. Self-healable fiber-reinforced vitrimer composites: overview and future prospects. RSC Adv 2022; 12:32569-32582. [PMID: 36425695 PMCID: PMC9661690 DOI: 10.1039/d2ra05103f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 11/02/2022] [Indexed: 08/15/2023] Open
Abstract
To achieve sustainable development goals, approaches towards the preparation of recyclable and healable polymeric materials is highly attractive. Self-healing polymers and thermosets based on bond-exchangeable dynamic covalent bonds, so called "vitrimers" could be a great effort in this direction. In order to match the industrial importance, enhancement of mechanical strength without sacrificing the bond exchange capability is a challenging issue, however, such concerns can be overcome through the developments of fiber-reinforced vitrimer composites. This article covers the outstanding features of fiber-reinforced vitrimer composites, including their reprocessing, recycling and self-healing properties, together with practical applications and future perspectives of this unique class of materials.
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Affiliation(s)
- Harsh Sharma
- University of Petroleum & Energy Studies (UPES), School of Engineering Energy Acres, Bidholi Dehradun 248007 India
| | - Sravendra Rana
- University of Petroleum & Energy Studies (UPES), School of Engineering Energy Acres, Bidholi Dehradun 248007 India
| | - Poonam Singh
- University of Petroleum & Energy Studies (UPES), School of Engineering Energy Acres, Bidholi Dehradun 248007 India
| | - Mikihiro Hayashi
- Department of Life Science and Applied Chemistry, Graduated School of Engineering, Nagoya Institute of Technology Showa-ku Nagoya 466-8555 Japan
| | - Wolfgang H Binder
- Chair of Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II, Martin Luther University Halle-Wittenberg Von-Danckelmann-Platz 4 Halle 06120 Germany
| | - Elisabeth Rossegger
- Chemistry of Functional Polymers, Polymer Competence Center Leoben GmbH Roseggerstraße 12 A-8700 Leoben Austria
| | - Ajay Kumar
- University of Petroleum & Energy Studies (UPES), School of Engineering Energy Acres, Bidholi Dehradun 248007 India
| | - Sandra Schlögl
- Chemistry of Functional Polymers, Polymer Competence Center Leoben GmbH Roseggerstraße 12 A-8700 Leoben Austria
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20
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Krishna Kumar B, Dickens TJ. Dynamic bond exchangeable thermoset vitrimers in 3D‐printing. J Appl Polym Sci 2022. [DOI: 10.1002/app.53304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Balaji Krishna Kumar
- Department of Industrial & Manufacturing Engineering High‐Performance Materials Institute, FAMU‐FSU College of Engineering Tallahassee Florida USA
| | - Tarik J. Dickens
- Department of Industrial & Manufacturing Engineering High‐Performance Materials Institute, FAMU‐FSU College of Engineering Tallahassee Florida USA
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21
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Thermadapt shape memory polymers based on thermally induced dynamic covalent quinone methide–thiol click reaction. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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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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23
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Vashchuk A, Motrunich S, Lishchuk P, Demchenko V, Isaiev M, Iurzhenko M. Thermal conductivity and mechanical properties of epoxy vitrimer nanocomposites reinforced with graphene oxide. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02587-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Hubbard AM, Ren Y, Sarvestani A, Konkolewicz D, Picu CR, Roy AK, Varshney V, Nepal D. Recyclability of Vitrimer Materials: Impact of Catalyst and Processing Conditions. ACS OMEGA 2022; 7:29125-29134. [PMID: 36033717 PMCID: PMC9404514 DOI: 10.1021/acsomega.2c02677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
With sustainability at the forefront of material research, recyclable polymers, such as vitrimers, have garnered increasing attention since their introduction in 2011. In addition to a traditional glass-transition temperature (T g), vitrimers have a second topology freezing temperature (T v) above which dynamic covalent bonds allow for rapid stress relaxation, self-healing, and shape reprogramming. Herein, we demonstrate the self-healing, shape memory, and shape reconfigurability properties as a function of experimental conditions, aiming toward recyclability and increased useful lifetime of the material. Of interest, we report the influence of processing conditions, which makes the material vulnerable to degradation. We report a decreased crosslink density with increased thermal cycling and compressive stress. Furthermore, we demonstrate that shape reconfigurability and self-healing are enhanced with increasing compressive stress and catalyst concentration, while their performance as a shape memory material remains unchanged. Though increasing the catalyst concentration, temperature, and compressive stress clearly enhances the recovery performance of vitrimers, we must emphasize its trade-off when considering the material degradation reported here. While vitrimers hold great promise as structural materials, it is vital to understand how experimental parameters impact their properties, stability, and reprocessability before vitrimers reach their true potential.
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Affiliation(s)
- Amber M. Hubbard
- Materials
and Manufacturing Directorate, Air Force
Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
- National
Research Council Research Associate, Air
Force Research Laboratory, Wright
Patterson Air Force Base, Ohio 45433, United States
| | - Yixin Ren
- Materials
and Manufacturing Directorate, Air Force
Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
- ARCTOS, Beavercreek, Ohio 45432, United States
| | - Alireza Sarvestani
- Department
of Mechanical Engineering, Mercer University, Macon, Georgia 31207, United States
| | - Dominik Konkolewicz
- Department
of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Catalin R. Picu
- Department
of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Ajit K. Roy
- Materials
and Manufacturing Directorate, Air Force
Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
| | - Vikas Varshney
- Materials
and Manufacturing Directorate, Air Force
Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
| | - Dhriti Nepal
- Materials
and Manufacturing Directorate, Air Force
Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
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25
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Aero Grade Epoxy Vitrimer towards Commercialization. Polymers (Basel) 2022; 14:polym14153180. [PMID: 35956694 PMCID: PMC9371194 DOI: 10.3390/polym14153180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/22/2022] [Accepted: 07/30/2022] [Indexed: 01/27/2023] Open
Abstract
Traditional crosslinked aero grade epoxy resins have excellent thermal-mechanical properties and solvent resistance, but they cannot be remolded, recycled, or repaired. Vitrimers can be topologically rearranged via an associative exchange mechanism, endowing them with thermoplasticity. Introducing dynamic bonds into crosslinked networks to obtain more sustainable thermosets is currently an interesting research topic. While recent research into vitrimers has indicated many advantages over traditional thermosets, an important shortcoming has been identified: susceptibility to creep at service temperature due to the dynamic bonds present in the network. In addition, designing aero grade epoxy vitrimers (similar to RTM6 resin) still remains a challenge. Herein, low creep aero grade epoxy vitrimer with thermal and mechanical properties similar to those of aero grade epoxy resins and with the ability to be recyclable, repairable, and reprocessable, has been prepared. In this manuscript, we demonstrate that aero grade epoxy vitrimer with reduced creep can be easily designed by the introduction of a certain fraction of permanent crosslinks, without having a negative effect on the stress relaxation of the material. Subsequently, the mechanical and relaxation properties were investigated and compared with those of classical aero grade epoxy resin. A high Tg (175 °C) epoxy vitrimer was obtained which fulfilled all mechanical and thermal specifications of the aero sector. This work provides a simple network design to obtain aero grade epoxy resins with excellent creep resistance at elevated temperatures while being sustainable.
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Shundo A, Yamamoto S, Tanaka K. Network Formation and Physical Properties of Epoxy Resins for Future Practical Applications. JACS AU 2022; 2:1522-1542. [PMID: 35911459 PMCID: PMC9327093 DOI: 10.1021/jacsau.2c00120] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Epoxy resins are used in various fields in a wide range of applications such as coatings, adhesives, modeling compounds, impregnation materials, high-performance composites, insulating materials, and encapsulating and packaging materials for electronic devices. To achieve the desired properties, it is necessary to obtain a better understanding of how the network formation and physical state change involved in the curing reaction affect the resultant network architecture and physical properties. However, this is not necessarily easy because of their infusibility at higher temperatures and insolubility in organic solvents. In this paper, we summarize the knowledge related to these issues which has been gathered using various experimental techniques in conjunction with molecular dynamics simulations. This should provide useful ideas for researchers who aim to design and construct various thermosetting polymer systems including currently popular materials such as vitrimers over epoxy resins.
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Affiliation(s)
- Atsuomi Shundo
- Department
of Applied Chemistry and Center for Polymer Interface and
Molecular Adhesion Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Satoru Yamamoto
- Department
of Applied Chemistry and Center for Polymer Interface and
Molecular Adhesion Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Keiji Tanaka
- Department
of Applied Chemistry and Center for Polymer Interface and
Molecular Adhesion Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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27
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Thermoset shape memory polymer with permanent shape reconfigurability based on dynamic disulfide bonds. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03114-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Self-Healable and Recyclable Dual-Shape Memory Liquid Metal–Elastomer Composites. Polymers (Basel) 2022; 14:polym14112259. [PMID: 35683935 PMCID: PMC9182922 DOI: 10.3390/polym14112259] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 02/01/2023] Open
Abstract
Liquid metal (LM)–polymer composites that combine the thermal and electrical conductivity of LMs with the shape-morphing capability of polymers are attracting a great deal of attention in the fields of reconfigurable electronics and soft robotics. However, investigation of the synergetic effect between the shape-changing properties of LMs and polymer matrices is lacking. Herein, a self-healable and recyclable dual-shape memory composite, comprising an LM (gallium) and a Diels–Alder (DA) crosslinked crystalline polyurethane (PU) elastomer, is reported. The composite exhibits a bilayer structure and achieves excellent shape programming abilities, due to the phase transitions of the LM and the crystalline PU elastomers. To demonstrate these shape-morphing abilities, a heat-triggered soft gripper, which can grasp and release objects according to the environmental temperature, is designed and built. Similarly, combining the electrical conductivity and the dual-shape memory effect of the composite, a light-controlled reconfigurable switch for a circuit is produced. In addition, due to the reversible nature of DA bonds, the composite is self-healable and recyclable. Both the LM and PU elastomer are recyclable, demonstrating the extremely high recycling efficiency (up to 96.7%) of the LM, as well as similar mechanical properties between the reprocessed elastomers and the pristine ones.
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30
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Porath L, Huang J, Ramlawi N, Derkaloustian M, Ewoldt RH, Evans CM. Relaxation of Vitrimers with Kinetically Distinct Mixed Dynamic Bonds. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02613] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Laura Porath
- Department of Materials Science and Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
- Frederick Seitz Materials Research Laboratory, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Junrou Huang
- Department of Materials Science and Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
- Frederick Seitz Materials Research Laboratory, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Nabil Ramlawi
- Department of Mechanical Science and Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Maryanne Derkaloustian
- Department of Materials Science and Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Randy H. Ewoldt
- Frederick Seitz Materials Research Laboratory, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
- Department of Mechanical Science and Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
- Beckman Institute, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
| | - Christopher M. Evans
- Department of Materials Science and Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
- Frederick Seitz Materials Research Laboratory, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
- Beckman Institute, University of Illinois Urbana Champaign, Urbana, Illinois 61801, United States
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31
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Shi H, Ruan H, Chen Z, Zhang Y, Zou C, Zhang X, Liu B, Xu M, Li B. Shape memory, thermal conductivity, and mechanical property of polylactic acid and natural rubber composites reinforced by an inorganic thermal conductive network. J Appl Polym Sci 2022. [DOI: 10.1002/app.52668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hui‐Hong Shi
- College of Chemical Engineering and Resource Utilization Northeast Forestry University Harbin China
| | - Hui‐Xian Ruan
- College of Chemical Engineering and Resource Utilization Northeast Forestry University Harbin China
| | - Zong‐Ju Chen
- College of Chemical Engineering and Resource Utilization Northeast Forestry University Harbin China
| | - Yi Zhang
- College of Chemical Engineering and Resource Utilization Northeast Forestry University Harbin China
| | - Cheng‐Long Zou
- College of Chemical Engineering and Resource Utilization Northeast Forestry University Harbin China
| | - Xiu‐Cheng Zhang
- College of Chemical Engineering and Resource Utilization, Key Laboratory for Molecular Design and preparation of flame retardant materials in Heilongjiang Northeast Forestry University Harbin China
| | - Bing Liu
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry Shaanxi University of Science and Technology Xi'an Shaanxi Province China
| | - Miao‐Jun Xu
- College of Chemical Engineering and Resource Utilization, Key Laboratory for Molecular Design and preparation of flame retardant materials in Heilongjiang Northeast Forestry University Harbin China
| | - Bin Li
- College of Chemical Engineering and Resource Utilization, Key Laboratory for Molecular Design and preparation of flame retardant materials in Heilongjiang Northeast Forestry University Harbin China
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32
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Lucherelli MA, Duval A, Avérous L. Biobased vitrimers: Towards sustainable and adaptable performing polymer materials. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101515] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Berne D, Cuminet F, Lemouzy S, Joly-Duhamel C, Poli R, Caillol S, Leclerc E, Ladmiral V. Catalyst-Free Epoxy Vitrimers Based on Transesterification Internally Activated by an α–CF3 Group. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02538] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Dimitri Berne
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
| | - Florian Cuminet
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
| | | | | | - Rinaldo Poli
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex
4, France
- Institut Universitaire de France, 1 rue Descartes, 75231 Paris Cedex 05, France
| | - Sylvain Caillol
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
| | - Eric Leclerc
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
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34
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Zhao H, Wei X, Fang Y, Gao K, Yue T, Zhang L, Ganesan V, Meng F, Liu J. Molecular Dynamics Simulation of the Structural, Mechanical, and Reprocessing Properties of Vitrimers Based on a Dynamic Covalent Polymer Network. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Hengheng Zhao
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Xuefeng Wei
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yue Fang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Ke Gao
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Tongkui Yue
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Liqun Zhang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Venkat Ganesan
- Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Fanlong Meng
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Liu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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Abstract
Abstract
Graphene is one of most exceptional type of nanocarbon. It is a two-dimensional, one atom thick, nanosheet of sp2 hybridized carbon atoms. Graphene has been employed as nanofiller for shape memory polymeric nanocomposites due to outstanding electrical conductivity, mechanical strength, flexibility, and thermal stability characteristics. Consequently, graphene nanostructures have been reinforced in the polymer matrices to attain superior structural, physical, and shape recovery properties. This review basically addresses the important class of shape memory polymer (SMP)/graphene nanocomposites. This assessment is revolutionary to portray the scientific development and advancement in the field of polymer and graphene-based shape memory nanocomposites. In SMP/graphene nanocomposites, polymer shape has been fixed at above transition temperature and then converted to memorized shape through desired external stimuli. Presence of graphene has caused fast switching of temporary shape to original shape in polymer/graphene nanocomposites. In this regard, better graphene dispersion, interactions between matrix-nanofiller, and well-matched interface formation leading to high performance stimuli-responsive graphene derived nanocomposites, have been described. Incidentally, the fabrication, properties, actuation ways, and relevance of the SMP/graphene nanocomposite have been discussed here. The potential applications of these materials have been perceived for the aerospace/automotive components, self-healing nanocomposites, textiles, civil engineering, and biomaterials.
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Affiliation(s)
- Ayesha Kausar
- National Center for Physics, Quaid-i-Azam University Campus , Islamabad , Pakistan
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36
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He E, Yao Y, Zhang Y, Wei Y, Ji Y. Reprocessing of Vitrimer. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a22020072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Shape memory function of trans-1,4-polyisoprene prepared by radiation crosslinking with a supercritical CO2 foaming. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109707] [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]
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38
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Wagner RJ, Hobbs E, Vernerey FJ. A network model of transient polymers: exploring the micromechanics of nonlinear viscoelasticity. SOFT MATTER 2021; 17:8742-8757. [PMID: 34528646 DOI: 10.1039/d1sm00753j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dynamic networks contain crosslinks that re-associate after disconnecting, imparting them with viscoelastic properties. While continuum approaches have been developed to analyze their mechanical response, these approaches can only describe their evolution in an average sense, omitting local, stochastic mechanisms that are critical to damage initiation or strain localization. To address these limitations, we introduce a discrete numerical model that mesoscopically coarse-grains the individual constituents of a dynamic network to predict its mechanical and topological evolution. Each constituent consists of a set of flexible chains that are permanently cross-linked at one end and contain reversible binding sites at their free ends. We incorporate nonlinear force-extension of individual chains via a Langevin model, slip-bond dissociation through Eyring's model, and spatiotemporally-dependent bond attachment based on scaling theory. Applying incompressible, uniaxial tension to representative volume elements at a range of constant strain rates and network connectivities, we then compare the mechanical response of these networks to that predicted by the transient network theory. Ultimately, we find that the idealized continuum approach remains suitable for networks with high chain concentrations when deformed at low strain rates, yet the mesoscale model proves necessary for the exploration of localized stochastic events, such as variability of the bond kinetics, or the nucleation of micro-cavities that likely conceive damage and fracture.
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Affiliation(s)
- Robert J Wagner
- Department of Mechanical Engineering, Program of Materials Science and Engineering, University of Colorado, Boulder, USA.
| | - Ethan Hobbs
- Department of Mechanical Engineering, Program of Materials Science and Engineering, University of Colorado, Boulder, USA.
| | - Franck J Vernerey
- Department of Mechanical Engineering, Program of Materials Science and Engineering, University of Colorado, Boulder, USA.
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39
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Das M, Aswathy T, Pal S, Naskar K. Effect of ionic liquid modified graphene oxide on mechanical and self-healing application of an ionic elastomer. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110691] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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40
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Wu S, Yang H, Xu WS, Chen Q. Thermodynamics and Reaction Kinetics of Symmetric Vitrimers Based on Dioxaborolane Metathesis. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00697] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shilong Wu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Huanhuan Yang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Wen-Sheng Xu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Quan Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
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41
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Sugarcane Bagasse-Derived Activated Carbon- (AC-) Epoxy Vitrimer Biocomposite: Thermomechanical and Self-Healing Performance. INT J POLYM SCI 2021. [DOI: 10.1155/2021/5561755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Vitrimeric materials have emerged as fascinating and sustainable materials owing to their malleability, reprocessability, and recyclability. Sustainable vitrimeric materials can be prepared by reinforcing polymeric matrix with bioderived fillers. In the current work, a sustainable vitrimer is prepared by incorporating biomass-derived activated carbon (AC) filler into the epoxy matrix to achieve enhanced thermal and mechanical properties. Thus, prepared biocomposite vitrimers demonstrate a lower-temperature self-healing (70°C for 5 min) via disulfide exchanges, compared to the pristine epoxy vitrimers (80°C for 5 min). Significantly, the self-healing performances have been studied extensively with the flexural studies; and changes in material healing efficiency have been demonstrated based on the observed changes in modulus.
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42
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Wang Y, Pei X, Xia L, Zhang Z, Wang Q, Wang T. Bio‐based
Eucommia ulmoides
gum/low density polyethylene shape memory composites reinforced by zinc methacrylate. POLYM INT 2021. [DOI: 10.1002/pi.6262] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yan Wang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou P.R. China
| | - Xianqiang Pei
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou P.R. China
- Qingdao Center of Resource Chemistry and New Materials Qingdao Center of Resource Chemistry and New Materials Jinshui Road, 36# Qingdao P.R. China
| | - Lin Xia
- Key Laboratory of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber‐Plastics, School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao P.R. China
| | - Zhancheng Zhang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou P.R. China
| | - Qihua Wang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou P.R. China
| | - Tingmei Wang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou P.R. China
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43
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Porath LE, Evans CM. Importance of Broad Temperature Windows and Multiple Rheological Approaches for Probing Viscoelasticity and Entropic Elasticity in Vitrimers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02800] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Laura E. Porath
- Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
- Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, United States
| | - Christopher M. Evans
- Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
- Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, United States
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44
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Salaeh S, Das A, Wießner S, Stapor M. Vitrimer-like material based on a biorenewable elastomer crosslinked with a dimeric fatty acid. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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45
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Intelligent Polymers, Fibers and Applications. Polymers (Basel) 2021; 13:polym13091427. [PMID: 33925249 PMCID: PMC8125737 DOI: 10.3390/polym13091427] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/22/2021] [Accepted: 04/25/2021] [Indexed: 12/21/2022] Open
Abstract
Intelligent materials, also known as smart materials, are capable of reacting to various external stimuli or environmental changes by rearranging their structure at a molecular level and adapting functionality accordingly. The initial concept of the intelligence of a material originated from the natural biological system, following the sensing–reacting–learning mechanism. The dynamic and adaptive nature, along with the immediate responsiveness, of the polymer- and fiber-based smart materials have increased their global demand in both academia and industry. In this manuscript, the most recent progress in smart materials with various features is reviewed with a focus on their applications in diverse fields. Moreover, their performance and working mechanisms, based on different physical, chemical and biological stimuli, such as temperature, electric and magnetic field, deformation, pH and enzymes, are summarized. Finally, the study is concluded by highlighting the existing challenges and future opportunities in the field of intelligent materials.
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46
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Moazzen K, Rossegger E, Alabiso W, Shaukat U, Schlögl S. Role of Organic Phosphates and Phosphonates in Catalyzing Dynamic Exchange Reactions in Thiol‐Click Vitrimers. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100072] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Khadijeh Moazzen
- Polymer Competence Center Leoben GmbH Roseggerstrasse 12 Leoben 8700 Austria
| | - Elisabeth Rossegger
- Polymer Competence Center Leoben GmbH Roseggerstrasse 12 Leoben 8700 Austria
| | - Walter Alabiso
- Polymer Competence Center Leoben GmbH Roseggerstrasse 12 Leoben 8700 Austria
| | - Usman Shaukat
- Polymer Competence Center Leoben GmbH Roseggerstrasse 12 Leoben 8700 Austria
| | - Sandra Schlögl
- Polymer Competence Center Leoben GmbH Roseggerstrasse 12 Leoben 8700 Austria
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47
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48
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Versatile functionalization of polymeric soft materials by implanting various types of dynamic cross-links. Polym J 2021. [DOI: 10.1038/s41428-021-00474-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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49
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Bhusal S, Oh C, Kang Y, Varshney V, Ren Y, Nepal D, Roy A, Kedziora G. Transesterification in Vitrimer Polymers Using Bifunctional Catalysts: Modeled with Solution-Phase Experimental Rates and Theoretical Analysis of Efficiency and Mechanisms. J Phys Chem B 2021; 125:2411-2424. [PMID: 33635079 DOI: 10.1021/acs.jpcb.0c10403] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Recently, thermoset vitrimer polymers have shown significant promise for structural applications because of their ability to be reshaped and remolded due to their covalent adaptive network (CAN). In these vitrimers, the transesterification reaction is responsible for the CAN, where the efficiency of the reaction is controlled either by organic or by organometallic catalysts. Understanding the mechanism of the transesterification reaction in the bulk phase using direct experimental techniques is extremely difficult due to the highly cross-linked complex structure of thermosetting vitrimers. Therefore, we use solution-phase experiments to investigate the catalytic efficiency and to guide density functional theory (DFT) simulations of the transesterification reaction mechanism with catalysts triazabicyclodecene (TBD), zinc acetate (Zn(OAc)2), 1-methylimidazole (1-MI), and dibutyltin oxide (DBTO). The estimated catalytic efficiency from the detailed DFT reaction path calculations follows the order TBD ≳ DBTO ≳ Zn(OAc)2 > 1-MI, which agrees with the experimental results. In addition to reaction path modeling, the mechanism and the relative rates of the transesterification reaction are analyzed with the assistance of Fukui indices as a measure of electrophilicity and nucleophilicity of atomic sites and with partial charges. It was found that the sum of the nucleophilicity index of the base and the electrophilicity index of the acid of the bifunctional catalysts correlates with the SN2 transition state and tetrahedral intermediate energies, which are related to the barrier of the rate-limiting step. This correlation provides a hypothesis for computational prescreening of potentially better catalysts that have an index in a range of values. These results provide a basis for understanding an important part of the mechanism of transesterification in vitrimer systems and may assist with designing new catalysts.
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Affiliation(s)
- Shusil Bhusal
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, Ohio 45433, United States.,Universal Technology Corporation, 1270 N Fairfield Rd., Beavercreek, Ohio 45432, United States
| | - Changjun Oh
- Department of Chemistry, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea
| | - Youngjong Kang
- Department of Chemistry, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea
| | - Vikas Varshney
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Yixin Ren
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, Ohio 45433, United States.,Universal Technology Corporation, 1270 N Fairfield Rd., Beavercreek, Ohio 45432, United States
| | - Dhriti Nepal
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Ajit Roy
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Gary Kedziora
- Air Force Institute of Technology, Department of Engineering Physics, Wright Patterson Air Force Base, Dayton, Ohio 45433, United States
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50
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Li L, Chen X, Jin K, Rusayyis MB, Torkelson JM. Arresting Elevated-Temperature Creep and Achieving Full Cross-Link Density Recovery in Reprocessable Polymer Networks and Network Composites via Nitroxide-Mediated Dynamic Chemistry. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c01691] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lingqiao Li
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Xi Chen
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Kailong Jin
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Mohammed Bin Rusayyis
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - John M. Torkelson
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
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