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Wu K, An D, Zhang Z, Zhao G, Cui C, Zhou F, Li J. Relief of Residual Stress in Bulk Thermosets in the Glassy State by Local Bond Exchange. Macromol Rapid Commun 2024; 45:e2300735. [PMID: 38281084 DOI: 10.1002/marc.202300735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/24/2024] [Indexed: 01/29/2024]
Abstract
The covalently cross-linked network gives thermosets superior thermal, mechanical, and electrical properties, which, however, squarely makes the large residual stress that is inevitably induced during preparation hardly relieved in the glassy state. In this work, an incredible reduction in residual stress is successfully achieved in bulk thermosets in the glassy state through introducing highly dynamic thiocarbamate bonds by "click" reactions of thiols and isocyanates. Due to the excellent dynamic behaviors of thiocarbamate bonds, local network rearrangement is achieved through thermal stimulation, while the strong 3D cross-linked network is well maintained. Ultimately, a decrease by 44% in residual stress is detected by simply annealing samples at 30 °C below glass transition temperature (Tg), during which they could well maintain more than 98.4% of the storage modulus. After the annealing, more uniform residual stress distribution is also observed, showing a 32% decline in sample standard deviation. However, the residual stress of epoxy resin, a typical thermoset as a reference, changes little even after annealing at Tg. The results prove it a feasible strategy to reduce residual stress in bulk thermosets in the glassy state by introducing proper dynamic covalent bonds.
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Affiliation(s)
- Kangning Wu
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Dongxu An
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Zhuolin Zhang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Ge Zhao
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Chenhui Cui
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Fusheng Zhou
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Jianying Li
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, 710049, China
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2
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Li Z, Zhao H, Duan P, Zhang L, Liu J. Manipulating the Properties of Polymer Vitrimer Nanocomposites by Designing Dual Dynamic Covalent Bonds. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7769-7780. [PMID: 38551319 DOI: 10.1021/acs.langmuir.4c00699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Polymer vitrimer is a novel material that contains dynamic covalent bonds (DCBs) allowing it to combine the desirable characteristics of both thermoplastics and thermosets. Similar to the traditional polymer nanocomposites, introducing nanoparticles into polymer vitrimer is also an effective strategy to further enhance its properties. However, a comprehensive understanding of matrix and interfacial bond exchange reactions (BERs) to tailor the properties of polymer vitrimer nanocomposites (PVNs) is still lacking. Herein, we utilized coarse-grained molecular dynamics simulations to investigate model PVNs in which there are two different kinds of DCBs in the vitrimer matrix and at the interface. Our results show that the normalized bond autocorrelation function (Csw) confirms the independence of BERs in the vitrimer matrix and in the interface. By varying the bond swap energy barrier (Δ E sw ) in the matrix Δ E sw mat or in the interface Δ E sw int , or in both Δ E sw all , a maximum mechanical property is observed at the moderate value of Δ E sw mat , Δ E sw int , orΔ E sw all . Meanwhile, the effect of Δ E sw on the stress relaxation and the bond orientation as a function of the time under a fixed strain is well probed, which both decay more slowly at greater Δ E sw . We simulated the tension-recovery curve to examine the effect of Δ E sw on the hysteresis loss and permanent deformation of PVNs, finding an optimal value to achieve its minimum energy dissipation and maximum recovery ratio. Lastly, we investigated the efficiency of self-healing by building and removing walls from the system. Interestingly, a maximum self-healing efficiency of the stress-strain behavior is observed at moderate Δ E sw . Overall, this study provides valuable insights into the relationship between the structure and properties of PVNs, offering implications for the manipulation of their mechanical properties and enhancement of their self-healing capabilities.
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Affiliation(s)
- Zhenyuan Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Hengheng Zhao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Pengwei Duan
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Liqun Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
- Institute of Emergent Elastomers, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
| | - Jun Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
- Interdisciplinary Research Center for Artificial Intelligence, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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3
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Wang H, Hu L, Xie W, Chang J, Zheng C, Li M, Wang Q, Liao H, Liu D, Wei B. Metastable Liquid Properties and Surface Flow Patterns of Ultrahigh Temperature Alloys Explored in Outer Space. Angew Chem Int Ed Engl 2024; 63:e202400312. [PMID: 38306324 DOI: 10.1002/anie.202400312] [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: 01/05/2024] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/04/2024]
Abstract
The metastable liquid properties and chemical bonds beyond 2000 K remain a huge challenge for ground-based research on liquid materials chemistry. We show the strong undercooling capability, metastable liquid properties and surface wave patterns of refractory Nb-Si and Zr-V binary alloys explored in space environment. The floating droplet of Nb82.7Si17.3 eutectic alloy superheated up to 2338 K exhibited an extreme undercooling of 437 K, approaching the 0.2TE threshold for homogeneous nucleation of liquid-solid reaction. The microgravity state endowed alloy droplets with nearly perfect sphericity and thus ensured the high accuracy to determine metastable undercooled liquid properties. A special kind of swirling flow was induced for liquid alloy owing to Marangoni convection, which resulted in the spiral microstructures on Zr64V36 alloy surface during liquid-solid phase transition. The coupled impacts of surface nucleation and surface flow brought in a novel olivary shape for these binary alloys. Furthermore, the chemical bonds and atomic structures of high temperature liquids were revealed to understand the liquid properties in outer space circumstances.
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Affiliation(s)
- Haipeng Wang
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Liang Hu
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Wenjun Xie
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Jian Chang
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Chenhui Zheng
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Mingxing Li
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Qing Wang
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Hui Liao
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Dingnan Liu
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Bingbo Wei
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
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4
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Kudo R, Samitsu S, Mori H. Self-healing amino acid-bearing acrylamides/ n-butyl acrylate copolymers via multiple noncovalent bonds. RSC Adv 2024; 14:7850-7857. [PMID: 38449826 PMCID: PMC10915467 DOI: 10.1039/d4ra00800f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 02/19/2024] [Indexed: 03/08/2024] Open
Abstract
Four amino acid-bearing acrylamides, N-acryloyl-l-threonine (AThrOH), N-acryloyl-l-glutamic acid (AGluOH), N-acryloyl-l-phenylalanine (APheOH), and N-acryloyl-l, l-diphenylalanine (APhePheOH), were selected for copolymerization with n-butyl acrylate (nBA) to develop amino acid-based self-healable copolymers. A series of copolymers comprising amino acid-bearing acrylamides and nBA with tunable comonomer compositions and molecular weights were synthesized by free radical and reversible addition-fragmentation chain-transfer copolymerization. Self-healing and mechanical properties originated from the noncovalent bonds between the carboxyl, hydroxyl, and amide groups, and π-π stacking interactions among the amino acid residues in the side chains were evaluated. Among these copolymers, P(nBA-co-AGluOH) with suitable comonomer compositions and molecular weights (nBA : AGluOH = 82 : 18, Mn = 18 300, Mw/Mn = 2.58) exhibited good mechanical properties (modulus of toughness = 17.3 MJ m-3) and self-healing under ambient conditions. The multiple noncovalent bonds of P(nBA-co-AGluOH)s were also efficient in improving the optical properties with an enhanced refractive index and good transparency.
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Affiliation(s)
- Ryo Kudo
- Department of Organic Material Science, Graduate School of Organic Materials Science, Yamagata University 4-3-16, Jonan Yonezawa City Yamagata Prefecture 992-8510 Japan
| | - Sadaki Samitsu
- National Institute for Materials Science 1-2-1, Sengen Tsukuba 305-0047 Japan
| | - Hideharu Mori
- Department of Organic Material Science, Graduate School of Organic Materials Science, Yamagata University 4-3-16, Jonan Yonezawa City Yamagata Prefecture 992-8510 Japan
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Li P, Wang J, Wang C, Xu C, Ni A. The Flame Retardant and Mechanical Properties of the Epoxy Modified by an Efficient DOPO-Based Flame Retardant. Polymers (Basel) 2024; 16:631. [PMID: 38475315 DOI: 10.3390/polym16050631] [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: 01/10/2024] [Revised: 01/31/2024] [Accepted: 02/06/2024] [Indexed: 03/14/2024] Open
Abstract
Currently, the mechanical performance reduction caused by excessive phosphorus content in the halogen-free flame-retardant EP has been an obstacle to its extensive application. This study presents the effective synthesis of a novel flame-retardant BDD with great efficiency, achieving an optimum phosphorus level of merely 0.25 wt %. The structure of BDD was verified by FTIR, 1H NMR, 31P NMR and XPS spectra. To investigate the flame-retardant properties of BDD, several EPs with various phosphorus levels were synthesized. The addition of phosphorus to the EP significantly increases its LOI value from 25.8% to 33.4% at a phosphorus level of 0.25 wt%. Additionally, the resin achieves a V-0 grade in the UL 94 test. The P-HRR and THR of the modified resin measured by the cone calorimeter are also significantly reduced. At the same time, the addition of a modest quantity of BDD has a minimal impact on the mechanical properties of epoxy resin. This study shows that the removal of hydroxyl groups significantly enhances the fire resistance of phosphate-based flame retardants, thereby providing a novel approach to synthesizing efficient flame retardants.
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Affiliation(s)
- Pengyu Li
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Jihui Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Changzeng Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Chengxin Xu
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Aiqing Ni
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
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6
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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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7
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Su Y, Li D, Shan M, Feng X, Gascon J, Wang Y, Zhang Y. Uniformly Distributed Mixed Matrix Membranes via a Solution Processable Strategy for Propylene/Propane Separation. Angew Chem Int Ed Engl 2024; 63:e202316093. [PMID: 38129312 DOI: 10.1002/anie.202316093] [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: 10/24/2023] [Revised: 12/20/2023] [Accepted: 12/20/2023] [Indexed: 12/23/2023]
Abstract
Aggregation of filler particles during the formation of mixed matrix membranes is difficult to avoid when filler loadings exceed a 10-15 wt %. Such agglomeration usually leads to poor membrane performance. In this work, using a ZIF-67 metal-organic framework (MOF) as filler along with surface modification of Ag4 tz4 to improve processability and selective olefin adsorption, we demonstrate that highly loaded with a very low agglomeration degree membranes can be synthesized displaying unmatched separation selectivity (39) for C3 H6 /C3 H8 mixtures and high permeability rates (99 Barrer), far surpassing previous reports in the literature. Through molecular dynamics simulation, the enhanced compatibility between ZIF-67 and polymer matrix with adding Ag4 tz4 was proven and the tendency in gas permeability and C3 H6 selectivity in the mixed matrix membranes (MMMs) were well explained. More importantly, the membrane showed a wide range of pressure and temperature resistance, together with remarkable long-term stability (>900 h). The modification method might help solve interface issues in MMMs and can be extended to the fabrication of other fillers to achieve high performance MMMs for gas separation.
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Affiliation(s)
- Yafei Su
- School of Chemical, Engineering, Zhengzhou University, 450001, Zhengzhou, P. R. China
| | - Dongyang Li
- School of Chemical, Engineering, Zhengzhou University, 450001, Zhengzhou, P. R. China
| | - Meixia Shan
- School of Chemical, Engineering, Zhengzhou University, 450001, Zhengzhou, P. R. China
| | - Xiaoquan Feng
- National Supercomputing Center in Zhengzhou, Zhengzhou University, 450001, Zhengzhou, P. R. China
| | - Jorge Gascon
- King Abdullah University of Science and Technology, KAUST Catalysis Center, Advanced Catalytic Materials, 23955, Thuwal, Saudi Arabia
| | - Yong Wang
- School of Energy and Environment, Southeast University, 210096, Nanjing, P. R. China
| | - Yatao Zhang
- School of Chemical, Engineering, Zhengzhou University, 450001, Zhengzhou, P. R. China
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8
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Carbonell-Blasco MP, Moyano MA, Hernández-Fernández C, Sierra-Molero FJ, Pastor IM, Alonso DA, Arán-Aís F, Orgilés-Calpena E. Polyurethane Adhesives with Chemically Debondable Properties via Diels-Alder Bonds. Polymers (Basel) 2023; 16:21. [PMID: 38201686 PMCID: PMC10780649 DOI: 10.3390/polym16010021] [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: 11/24/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Covalent adaptable networks (CANs) represent a pioneering advance in polymer science, offering unprecedented versatility in materials design. Unlike conventional adhesives with irreversible bonds, CAN-based polyurethane adhesives have the unique ability to undergo chemical restructuring through reversible bonds. One of the strategies for incorporating these types of reactions in polyurethanes is by functionalisation with Diels-Alder (DA) adducts. By taking advantage of the reversible nature of the DA chemistry, the adhesive undergoes controlled crosslinking and decrosslinking processes, allowing for precise modulation of bond strength. This adaptability is critical in applications requiring reworkability or recyclability, as it allows for easy disassembly and reassembly of bonded components without compromising the integrity of the material. This study focuses on the sustainable synthesis and characterisation of a solvent-based polyurethane adhesive, obtained by functionalising a polyurethane prepolymer with DA diene and dienophiles. The characterisation of the adhesives was carried out using different experimental techniques: nuclear magnetic resonance spectroscopy (NMR), Brookfield viscosity, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and T-peel strength testing of leather/adhesive/rubber joints to determine the adhesive properties, both before and after the application of external stimuli. The conversion of both the DA and retro-Diels-Alder (r-DA) reactions was confirmed by 1H-NMR. The adhesive properties were not altered by the functionalisation of the adhesive prepolymer, showing similar thermal resistance and good rheological and adhesive properties, even exceeding the most demanding technical requirements for upper-to-sole joints in footwear. After the application of an external thermal stimuli, the bonded materials separated without difficulty and without damage, thus facilitating their separation, recovery and recycling.
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Affiliation(s)
- María Pilar Carbonell-Blasco
- Footwear Technology Centre, Campo Alto Campo, Elda, 03600 Alicante, Spain; (M.A.M.); (C.H.-F.); (F.A.-A.); (E.O.-C.)
| | - María Alejandra Moyano
- Footwear Technology Centre, Campo Alto Campo, Elda, 03600 Alicante, Spain; (M.A.M.); (C.H.-F.); (F.A.-A.); (E.O.-C.)
| | - Carlota Hernández-Fernández
- Footwear Technology Centre, Campo Alto Campo, Elda, 03600 Alicante, Spain; (M.A.M.); (C.H.-F.); (F.A.-A.); (E.O.-C.)
| | - Francisco J. Sierra-Molero
- Department of Organic Chemistry, Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, P.O. Box 99, 03080 Alicante, Spain; (F.J.S.-M.); (I.M.P.); (D.A.A.)
| | - Isidro M. Pastor
- Department of Organic Chemistry, Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, P.O. Box 99, 03080 Alicante, Spain; (F.J.S.-M.); (I.M.P.); (D.A.A.)
| | - Diego A. Alonso
- Department of Organic Chemistry, Institute of Organic Synthesis (ISO), Faculty of Sciences, University of Alicante, P.O. Box 99, 03080 Alicante, Spain; (F.J.S.-M.); (I.M.P.); (D.A.A.)
| | - Francisca Arán-Aís
- Footwear Technology Centre, Campo Alto Campo, Elda, 03600 Alicante, Spain; (M.A.M.); (C.H.-F.); (F.A.-A.); (E.O.-C.)
| | - Elena Orgilés-Calpena
- Footwear Technology Centre, Campo Alto Campo, Elda, 03600 Alicante, Spain; (M.A.M.); (C.H.-F.); (F.A.-A.); (E.O.-C.)
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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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10
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Sun W, Xu J, Song J, Chen Y, Lv Z, Cheng Y, Zhang L. Self-healing of electrical damage in insulating robust epoxy containing dynamic fluorine-substituted carbamate bonds for green dielectrics. MATERIALS HORIZONS 2023. [PMID: 37070696 DOI: 10.1039/d3mh00040k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Power systems and electrical grids are critical for the development of renewable energy. Electrical treeing is one of the major factors that lead to electrical damage in insulating dielectrics and decline in the reliability of power equipment and ultimately results in catastrophic failure. Here, we demonstrate that bulk epoxy damaged by electrical treeing is able to efficiently heal repeatedly to recover its original robust performance. The classical dilemma between the insulating properties and electrical-damage healability is overcome by dynamic fluorinated carbamate bonds. Moreover, the dynamic bond enables the epoxy to have admirable degradability, which is demonstrated to be used as an attractive green degradable insulation coating. When used as a matrix for fiber-reinforced composites, the reclaimed glass fibers after decomposing the epoxy maintained their original morphology and functionality. This design provides a novel approach for developing smart and green dielectrics to enhance the reliability, sustainability and lifespan of power equipment and electronics.
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Affiliation(s)
- Wenjie Sun
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
| | - Jiazhu Xu
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
| | - Jianhong Song
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
| | - Yue Chen
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
| | - Zepeng Lv
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
| | - Yonghong Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
| | - Lei Zhang
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
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11
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Sustainable Bio-Based UV-Cured Epoxy Vitrimer from Castor Oil. Polymers (Basel) 2023; 15:polym15041024. [PMID: 36850307 PMCID: PMC9963144 DOI: 10.3390/polym15041024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
Vitrimers brought new properties in thermosets by allowing their reshaping, self-healing, reprocessing, and network rearrangement without changing structural integrity. In this study, epoxidized castor oil (ECO) was successfully used for the straightforward synthesis of a bio-based solvent-free vitrimer. The synthesis was based on a UV-curing process, which proceeded at low temperatures in the absence of any solvents, and within a short time. Real time Fourier-transformed infrared spectroscopy and photo-DSC were exploited to monitor the cationic photocurable process. The UV-cured polymer networks were able to efficiently undergo thermo-activated bond exchange reactions due to the presence of dibutyl phosphate as a transesterification catalyst. Mechanical properties, thermal resistance, glass transition temperature, and stress relaxation were investigated as a function of the amount of transesterification catalyst. Mechanical properties were determined by both DMTA and tensile tests. Glass transition temperature (Tg) was evaluated by DMTA. Thermal stability was assessed by thermogravimetric analysis, whilst vitrimeric properties were studied by stress relaxation experiments. Overall, the ECO-based vitrimer showed high thermal resistance (up to 200 °C) and good mechanical properties (elastic modulus of about 10 MPa) and can therefore be considered as a promising starting point for obtaining more sustainable vitrimers.
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A Multifunctional Biomass Zinc Catalyst for Epoxy-Based Vitrimers and Composites. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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13
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Kumar A, Connal LA. Biobased Transesterification Vitrimers. Macromol Rapid Commun 2023; 44:e2200892. [PMID: 36661130 DOI: 10.1002/marc.202200892] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/19/2022] [Indexed: 01/21/2023]
Abstract
The rapid increase in the use of plastics and the related sustainability issues, including the depletion of global petroleum reserves, have rightly sparked interest in the use of biobased polymer feedstocks. Thermosets cannot be remolded, processed, or recycled, and hence cannot be reused because of their permanent molecular architecture. Vitrimers have emerged as a novel polymer family capable of bridging the difference between thermoplastic and thermosets. Vitrimers enable unique recycling strategies, however, it is still important to understand where the raw material feedstocks originate from. Transesterification vitrimers derived from renewable resources are a massive opportunity, however, limited research has been conducted in this specific family of vitrimers. This review article provides a comprehensive overview of transesterification vitrimers produced from biobased monomers. The focus is on the biomass structural suitability with dynamic covalent chemistry, as well as the viability of the synthetic methods.
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Affiliation(s)
- Ashwani Kumar
- Research School of Chemistry, Australian National University, Canberra, ACT, 2600, Australia
| | - Luke A Connal
- Research School of Chemistry, Australian National University, Canberra, ACT, 2600, Australia
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14
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Manarin E, Da Via F, Rigatelli B, Turri S, Griffini G. Bio-Based Vitrimers from 2,5-Furandicarboxylic Acid as Repairable, Reusable, and Recyclable Epoxy Systems. ACS APPLIED POLYMER MATERIALS 2023; 5:828-838. [PMID: 36660254 PMCID: PMC9841517 DOI: 10.1021/acsapm.2c01774] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
In this work, a series of bio-based epoxy vitrimers were developed by reacting diglycidyl ether of bisphenol A (DGEBA) and bio-based 2,5-furandicarboxylic acid (FDCA) at different molar ratios. Triazabicyclodecene was used as a transesterification catalyst to promote thermally induced exchange reactions. Differential scanning calorimetry, gel content measurements, and Fourier transform infrared spectroscopy were used to study the FDCA-DGEBA crosslinking reaction. The transesterification exchange reaction kinetics of such crosslinked systems was characterized via stress relaxation tests, evidencing an Arrhenius-type dependence of the relaxation time on temperature, and an activation energy of the dynamic rearrangement depending on the molar composition. In addition, self-healing, thermoformability, and mechanical recycling were demonstrated for the composition showing the faster topology rearrangement, namely, the FDCA/DGEBA molar ratio equal to 0.6. This work provides the first example of bio-based epoxy vitrimers incorporating FDCA, making these systems of primary importance in the field of reversible, high-performance epoxy materials for future circular economy scenarios.
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15
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A Critical Review of Sustainable Vanillin-modified Vitrimers: Synthesis, Challenge and Prospects. REACTIONS 2023. [DOI: 10.3390/reactions4010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Nearly 90% of thermosets are produced from petroleum resources, they have remarkable mechanical characteristics, are chemically durable, and dimensionally stable. However, they can contribute to global warming, depletion of petroleum reserves, and environmental contamination during manufacture, use, and disposal. Using renewable resources to form thermosetting materials is one of the most crucial aspects of addressing the aforementioned issues. Vanillin-based raw materials have been used in the industrial manufacturing of polymer materials because they are simple to modify structurally. Conversely, traditional thermosetting materials as a broad class of high-molecular-weight molecules are challenging to heal, decompose and recover owing to their permanent 3-D crosslinking network. Once the products are damaged, recycling issues could arise, causing resource loss and environmental impact. It could be solved by inserting dynamic covalent adaptable networks (DCANs) into the polymer chains, increasing product longevity, and minimizing waste. It also improves the attractiveness of these products in the prospective field. Moreover, it is essential to underline that increasing product lifespan and reducing waste is equivalent to reducing the expense of consuming resources. The detailed synthesis, reprocessing, thermal, and mechanical characteristics of partly and entirely biomass thermosetting polymers made from vanillin-modified monomers are covered in the current work. Finally, the review highlights the benefits, difficulties, and application of these emerging vanillin-modified vitrimers as a potential replacement for conventional non-recyclable thermosets.
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16
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Upcycling of PET from recycled food packaging trays via vitrimers chemistry. POLYMER 2023. [DOI: 10.1016/j.polymer.2022.125618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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17
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Yokoyama Y, Yasui T, Takeda A, Kanahashi S, Ogino K. Synthesis of bisphenol compounds from non-edible cashew nut shell liquid. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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18
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Casado J, Konuray O, Benet G, Fernández-Francos X, Morancho JM, Ramis X. Optimization and Testing of Hybrid 3D Printing Vitrimer Resins. Polymers (Basel) 2022; 14:polym14235102. [PMID: 36501497 PMCID: PMC9739315 DOI: 10.3390/polym14235102] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022] Open
Abstract
The quality of photocure-based 3D printing greatly depends on the properties of the photoresin. There are still many challenges to be overcome at the material level before such additive manufacturing methods dominate the manufacturing industry. To contribute to this exciting re-search, an acrylate-epoxy hybrid and vitrimeric photoresin was studied to reveal the formulation parameters that could be leveraged to obtain improved processability, mechanical performance, and repairability/reprocessability. As the network becomes more lightly or densely crosslinked as a result of changing monomer compositions, or as its components are compatibilized to different extents by varying the types and loadings of the coupling agents, its thermomechanical, tensile, and vitrimeric behaviors are impacted. Using a particular formulation with a high concentration of dynamic β-hydroxyester linkages, samples are 3D printed and tested for repair and recyclability. When processed at sufficiently high temperatures, transesterification reactions are triggered, allowing for the full recovery of the tensile properties of the repaired or recycled materials, despite their inherently crosslinked structure.
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Lee J, Nanthananon P, Kim A, Kwon YK. Malleable and recyclable thermoset network with reversible
β‐hydroxyl
esters and disulfide bonds. J Appl Polym Sci 2022. [DOI: 10.1002/app.53369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Juho Lee
- Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon South Korea
| | - Phornwalan Nanthananon
- Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon South Korea
| | - Arin Kim
- Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon South Korea
| | - Yong Ku Kwon
- Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon South Korea
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20
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Rashid MA, Liu W, Wei Y, Jiang Q. Review of intrinsically recyclable biobased epoxy thermosets enabled by dynamic chemical bonds. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2022.2080559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Muhammad Abdur Rashid
- Center for Civil Aviation Composites, Donghua University, Shanghai, China
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, China
- Dhaka University of Engineering and Technology, Gazipur, Bangladesh
| | - Wanshuang Liu
- Center for Civil Aviation Composites, Donghua University, Shanghai, China
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, China
| | - Yi Wei
- Center for Civil Aviation Composites, Donghua University, Shanghai, China
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, China
| | - Qiuran Jiang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, China
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21
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Qin J, Liu X, Chen B, Liu J, Wu M, Tan L, Yang C, Liang L. Thermo-healing and recyclable epoxy thermosets based on dynamic phenol-carbamate bonds. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105411] [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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Liu L, Wang F, Zhu Y, Qi H. Degradable Schiff base benzoxazine thermosets with high glass transition temperature and its high‐performance epoxy alloy: Synthesis and properties. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5899] [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)
- Lele Liu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education School of Materials Science and Engineering, East China University of Science & Technology Shanghai China
| | - Fan Wang
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education School of Materials Science and Engineering, East China University of Science & Technology Shanghai China
| | - Yaping Zhu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education School of Materials Science and Engineering, East China University of Science & Technology Shanghai China
| | - Huimin Qi
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education School of Materials Science and Engineering, East China University of Science & Technology Shanghai China
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Liu YB, Peng LM, Bao RY, Yang MB, Yang W. Vitrimeric Polylactide by Two-step Alcoholysis and Transesterification during Reactive Processing for Enhanced Melt Strength. ACS APPLIED MATERIALS & INTERFACES 2022; 14:45966-45977. [PMID: 36166428 DOI: 10.1021/acsami.2c15595] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Because of its rather low melt strength, polylactide (PLA) has yet to fulfill its promise as advanced biobased and biodegradable foams to replace fossil-based polymer foams. In this work, PLA vitrimers were prepared by two-step reactive processing from commercial PLA thermoplastics, glycerol, and diphenylmethane diisocyanate (MDI) using Zn(II)-catalyzed addition and transesterification chemistry. The transesterification reaction of PLA and glycerol occurs with zinc acetate as the catalyst, and chain scission will take place due to the alcoholysis of the PLA chains by the free hydroxyl groups from the glycerol. Long-chain PLA with hydroxyl groups can be obtained and then cross-linked with MDI. Rheological analysis shows that the formed cross-linked network can significantly improve melt strength and promote strain hardening under extensional flow. PLA vitrimers still maintain the ability of thermoplastic processing via extrusion and compression. The enhanced melt strength and the rearrangement of network topology facilitate the foaming processing. An expansion ratio as large as 49.2-fold and microcellular foam with a uniform cell morphology can be obtained for PLA vitrimers with a gel fraction of 51.8% through a supercritical carbon dioxide foaming technique. This work provides a new way with the scale-up possibility to enhance the melt strength of PLA, and the broadened range of PLA applicability brought by PLA vitrimers is truly valuable in terms of the realization of a sustainable society.
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Affiliation(s)
- Yong-Bo Liu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Li-Mei Peng
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Rui-Ying Bao
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Ming-Bo Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Wei Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
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Jing F, Zhao R, Li C, Xi Z, Wang Q, Xie H. Influence of the Epoxy/Acid Stoichiometry on the Cure Behavior and Mechanical Properties of Epoxy Vitrimers. Molecules 2022; 27:molecules27196335. [PMID: 36234872 PMCID: PMC9571190 DOI: 10.3390/molecules27196335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
Bisphenol A epoxy resin cured with a mixture of dimerized and trimerized fatty acids is the first epoxy vitrimer and has been extensively studied. However, the cure behavior and thermal and mechanical properties of this epoxy vitrimer depend on the epoxy/acid stoichiometry. To address these issues, epoxy vitrimers with three epoxy/acid stoichiometries (9:11, 1:1 and 11:9) were prepared and recycled four times. Differential scanning calorimetry (DSC) was used to study the cure behavior of the original epoxy vitrimers. The dynamic mechanical properties and mechanical performance of the original and recycled epoxy vitrimers were investigated by using dynamic mechanical analysis (DMA) and a universal testing machine. Furthermore, the reaction mechanism of epoxy vitrimer with different epoxy/acid stoichiometry was interpreted. With an increase in the epoxy/acid ratio, the reaction rate, swelling ratio, glass transition temperature and mechanical properties of the original epoxy vitrimers decreased, whereas the gel content increased. The recycling decreased the swelling ratio and elongation at break of the original epoxy vitrimers. Moreover, the elongation at break of the recycled epoxy vitrimers decreased with the epoxy/acid ratio at the same recycling time. However, the gel content, tensile strength and toughness of the original epoxy vitrimers increased after the recycling. The mechanical properties of epoxy vitrimers can be tuned with the variation in the epoxy/acid stoichiometry.
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Affiliation(s)
- Fan Jing
- MOE Key Laboratory of High Performance Polymer Materials and Technology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Ruikang Zhao
- MOE Key Laboratory of High Performance Polymer Materials and Technology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Chenxuan Li
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - Zhonghua Xi
- Experimental Chemistry Teaching Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Qingjun Wang
- MOE Key Laboratory of High Performance Polymer Materials and Technology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
- Correspondence: (Q.W.); (H.X.); Tel.: +86-25-8968-2568 (H.X.)
| | - Hongfeng Xie
- MOE Key Laboratory of High Performance Polymer Materials and Technology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
- Correspondence: (Q.W.); (H.X.); Tel.: +86-25-8968-2568 (H.X.)
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25
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Weerathaworn S, Abetz V. Tailor‐made Vinylogous Urethane Vitrimers Based on Binary and Ternary Block and Random Copolymers: An Approach toward Reprocessable Materials. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200248] [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)
- Siraphat Weerathaworn
- Institute of Physical Chemistry Universität Hamburg Grindelallee 117 20146 Hamburg Germany
| | - Volker Abetz
- Institute of Physical Chemistry Universität Hamburg Grindelallee 117 20146 Hamburg Germany
- Institute of Membrane Research Helmholtz‐Zentrum Hereon Max‐Planck‐Straße 1 21502 Geesthacht Germany
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26
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Chappuis S, Edera P, Cloitre M, Tournilhac F. Enriching an Exchangeable Network with One of Its Components: The Key to High- Tg Epoxy Vitrimers with Accelerated Relaxation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sélène Chappuis
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS, PSL University, 10 Rue Vauquelin, 75005 Paris, France
| | - Paolo Edera
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS, PSL University, 10 Rue Vauquelin, 75005 Paris, France
| | - Michel Cloitre
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS, PSL University, 10 Rue Vauquelin, 75005 Paris, France
| | - François Tournilhac
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS, PSL University, 10 Rue Vauquelin, 75005 Paris, France
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27
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Feng Y, Nie Z, Deng P, Luo L, Hu X, Su J, Li H, Fan X, Qi S. An Effective Approach to Improve the Thermal Conductivity, Strength, and Stress Relaxation of Carbon Nanotubes/Epoxy Composites Based on Vitrimer Chemistry. Int J Mol Sci 2022; 23:ijms23168833. [PMID: 36012099 PMCID: PMC9408316 DOI: 10.3390/ijms23168833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/02/2022] [Accepted: 08/05/2022] [Indexed: 11/16/2022] Open
Abstract
An effective method was developed to improve the interfacial interaction between Mutiwalled carbon nanotubes (MWCNTs) and epoxy matrix. The performance of thermal conductivity and strength of the epoxy vitrimer were enhanced by polydopamine (PDA) coating. Polydopamine is a commonly used photothermal agent, which of course, was effective in modifying MWCNTs used in photoresponsive epoxy resin. The surface temperature of the epoxy composite with 3% MWCNTs@PDA fillers added increased from room temperature to 215 °C in 48 s. The metal–catechol coordination interactions formed between the catechol groups of PDA and Zn2+ accelerated the stress relaxation of epoxy vitrimer. Moreover, the shape memory, repairing, and recycling of epoxy vitrimer were investigated. Therefore, dopamine coating is a multifunctional approach to enhance the performance of epoxy vitrimer.
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Thermal-induced self-healing bio-based vitrimers: Shape memory, recyclability, degradation, and intrinsic flame retardancy. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Hu Z, Xu N, An Z, Wang B, Lu F, Tian B, Yao G, Liu Y, Liu L, Huang Y. γ-Ray-driven degradation of robust epoxy thermosets. MATERIALS HORIZONS 2022; 9:1495-1502. [PMID: 35315458 DOI: 10.1039/d1mh01971f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The γ ray is a promising candidate for thermoset material degradation owing to its high energy, strong penetrability, low carbon emission and economy. However, the development of irradiation degradation technology is limited by irradiation cross-linking and irradiation degradation simultaneously, and a controllable degradation remains a considerable challenge. Herein, we exploit stable conjugated linkages, phenyl imine conjugated N-N bonds, for the γ-ray-induced controllable cleavage of polymer chains. Using this distinctive conjugated structure, we design γ-ray-responsive epoxy networks that can be readily degraded at a dose of 40 kGy at room temperature and show mechanical properties, thermal properties and chemical resistance comparable to commodity epoxy resins. Additionally, the incorporation of a radical scavenger can reduce the uncontrolled recombination of degradation segments, which further accelerates the degradation of the epoxy thermosets.
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Affiliation(s)
- Zhen Hu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin 150001, China.
| | - Ningdi Xu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin 150001, China.
| | - Ziqiang An
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin 150001, China.
| | - Baolong Wang
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin 150001, China.
| | - Fei Lu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin 150001, China.
| | - Bo Tian
- Technical Physics Institute of Heilongjiang Academy of Sciences, Harbin 150086, China
| | - Gang Yao
- Technical Physics Institute of Heilongjiang Academy of Sciences, Harbin 150086, China
| | - Yingying Liu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin 150001, China.
| | - Li Liu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin 150001, China.
| | - Yudong Huang
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin 150001, China.
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Chen JH, Lu JH, Pu XL, Chen L, Wang YZ. Recyclable, malleable and intrinsically flame-retardant epoxy resin with catalytic transesterification. CHEMOSPHERE 2022; 294:133778. [PMID: 35093421 DOI: 10.1016/j.chemosphere.2022.133778] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/23/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Flame retardancy and recyclability are two important issues in the research field of thermosets, particularly for epoxy resin (EP) with the biggest market share. It is of great importance, but rarely achievable, to integrate these properties simultaneously into EP. Herein, we report a facile way to prepare intrinsically flame-retardant epoxy vitrimers combining rapid recycling and multiple shape memory effects by introducing dynamic ester-linkages with catalytic transesterification activity into the crosslinking networks of EP. The flame-retardant epoxy vitrimers exhibited high Tg (∼110.7 °C), desirable thermal stability and excellent flame retardancy with UL-94 V-0 rating, and high LOI of ∼34%. Also, the value of the peak heat release rate (PHRR) and the total heat release (THR) showed 63% and 32% reduction, respectively. Meanwhile, flame-retardant epoxy vitrimers showed high malleability that could be reprocessed in 15 min at 200 °C without sacrificing the mechanical properties and flame retardancy. Moreover, the dynamic transesterification network allowed flame-retardant EP to access multiple shape memory effect. The design of flame-retardant epoxy vitrimers provide a prime example to foster the cyclic utilization of flame-retardant thermosetting polymers.
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Affiliation(s)
- Jia-Hui Chen
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Jia-Hui Lu
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiao-Lu Pu
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Li Chen
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China
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31
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Cao Q, Weng Z, Qi Y, Li J, Liu W, Liu C, Zhang S, Wei Z, Chen Y, Jian X. Achieving higher performances without an external curing agent in natural magnolol-based epoxy resin. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.09.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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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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33
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Jarach N, Dodiuk H, Kenig S, Naveh N. Rheology—Composition relationship of vitrimers based on polyethyleneimine. J Appl Polym Sci 2022. [DOI: 10.1002/app.52353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Natanel Jarach
- The Department of Polymer Materials Engineering, Pernick Faculty of Engineering Shenkar Engineering. Design. Art Raman‐Gan Israel
| | - Hanna Dodiuk
- The Department of Polymer Materials Engineering, Pernick Faculty of Engineering Shenkar Engineering. Design. Art Raman‐Gan Israel
| | - Samuel Kenig
- The Department of Polymer Materials Engineering, Pernick Faculty of Engineering Shenkar Engineering. Design. Art Raman‐Gan Israel
| | - Naum Naveh
- The Department of Polymer Materials Engineering, Pernick Faculty of Engineering Shenkar Engineering. Design. Art Raman‐Gan Israel
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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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35
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Vidil T, Llevot A. Fully Biobased Vitrimers: Future Direction Towards Sustainable Cross‐Linked Polymers. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100494] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thomas Vidil
- University of Bordeaux CNRS Bordeaux INP Laboratoire de Chimie des Polymères Organiques UMR 5629, ENSCBP, 16 avenue Pey‐Berland Pessac cedex F‐33607 France
| | - Audrey Llevot
- University of Bordeaux CNRS Bordeaux INP Laboratoire de Chimie des Polymères Organiques UMR 5629, ENSCBP, 16 avenue Pey‐Berland Pessac cedex F‐33607 France
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36
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Wang Y, Tang L, Li Y, Li Q. Effects of networks composed of epoxy/dual thiol‐curing agents on properties of shape memory polymers. J Appl Polym Sci 2022. [DOI: 10.1002/app.51548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yanling Wang
- Faculty of Petroleum Engineering China University of Petroleum (East China) Qingdao Shandong China
| | - Longhao Tang
- Faculty of Petroleum Engineering China University of Petroleum (East China) Qingdao Shandong China
| | - Yongfei Li
- Faculty of Petroleum Engineering China University of Petroleum (East China) Qingdao Shandong China
| | - Qiang Li
- Faculty of Petroleum Engineering China University of Petroleum (East China) Qingdao Shandong China
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37
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Sun Y, Wang M, Wang Z, Mao Y, Jin L, Zhang K, Xia Y, Gao H. Amine-Cured Glycidyl Esters as Dual Dynamic Epoxy Vitrimers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c01914] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yingchun Sun
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243032, China
| | - Miaomiao Wang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243032, China
| | - Zhen Wang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243032, China
| | - Yifan Mao
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243032, China
| | - Ling Jin
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243032, China
| | - Kui Zhang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243032, China
| | - Youyi Xia
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243032, China
| | - Hong Gao
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243032, China
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38
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Thermal decomposition behavior and flame retardancy of bioepoxies, their blends and composites: A comprehensive review. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2021.110904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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39
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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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40
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Engelen S, Wróblewska AA, De Bruycker K, Aksakal R, Ladmiral V, Caillol S, Du Prez FE. Sustainable design of vanillin-based vitrimers using vinylogous urethane chemistry. Polym Chem 2022. [DOI: 10.1039/d2py00351a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A vanillin derivative containing β-hydroxy-amine functionalities was introduced into vitrimer materials using vinylogous urethane chemistry. These new materials have a high bio-based content and show fast reprocessability.
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Affiliation(s)
- Stéphanie Engelen
- Polymer Chemistry Research Group, Centre of Macromolecular Chemistry (CMaC), Department of organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium
| | - Aleksandra Alicja Wróblewska
- Polymer Chemistry Research Group, Centre of Macromolecular Chemistry (CMaC), Department of organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium
| | - Kevin De Bruycker
- Polymer Chemistry Research Group, Centre of Macromolecular Chemistry (CMaC), Department of organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium
| | - Resat Aksakal
- Polymer Chemistry Research Group, Centre of Macromolecular Chemistry (CMaC), Department of organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium
| | - Vincent Ladmiral
- ICGM, University Montpellier, CNRS, ENSCM, 34095 Montpellier, France
| | - Sylvain Caillol
- ICGM, University Montpellier, CNRS, ENSCM, 34095 Montpellier, France
| | - Filip E. Du Prez
- Polymer Chemistry Research Group, Centre of Macromolecular Chemistry (CMaC), Department of organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium
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41
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Yang W, Ding H, Liu T, Ou R, Lin J, Puglia D, Xu P, Wang Q, Dong W, Du M, Ma P. Design of Intrinsically Flame-Retardant Vanillin-Based Epoxy Resin for Thermal-Conductive Epoxy/Graphene Aerogel Composites. ACS APPLIED MATERIALS & INTERFACES 2021; 13:59341-59351. [PMID: 34859998 DOI: 10.1021/acsami.1c19727] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Vanillin, as a lignin-derived mono-aromatic compound, has attracted increasing attention due to its special role as an intermediate for the synthesis of different biobased polymers. Herein, intrinsically flame-retardant and thermal-conductive vanillin-based epoxy/graphene aerogel (GA) composites were designed. First, a bifunctional phenol intermediate (DN-bp) was synthesized by coupling vanillin with 4, 4'-diaminodiphenylmethane and DOPO, and the epoxy monomer (MEP) was obtained by the epoxidation reaction with DN-bp and epichlorohydrin. Then, various amounts of MEP and diglycidyl ether of bisphenol A (DER) were mixed and cured. Interestingly, the flexural strength and modulus were greatly enhanced from 72.8 MPa and 1.3 GPa to 90.3 MPa and 2.8 GPa, respectively, at 30 wt % MEP, due to the rigidity of MEP and strong intermolecular N-H hydrogen bonding interactions. Meanwhile, the cured epoxy achieved a UL-94 V0 rating with a low P content of 1.06%. The flame-retardant vanillin-based epoxy was then impregnated into the thermal conductive 3D GA networks. The obtained epoxy/graphene composite showed excellent flame retardancy and thermal conductivity [λ = 0.592 W/(m·K)] with only 0.5 wt % graphene in the system. Based on these results, we believe that this work would represent a novel solution for the preparation of high-performance biobased flame-retardant multipurpose epoxies.
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Affiliation(s)
- Weijun Yang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Hui Ding
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Tianxi Liu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Rongxian Ou
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Jieying Lin
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Debora Puglia
- Civil and Environmental Engineering Department, Materials Engineering Center, Perugia University, UdR INSTM, Terni 05100, Italy
| | - Pengwu Xu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Qingwen Wang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Weifu Dong
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Mingliang Du
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Piming Ma
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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42
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Moreno A, Morsali M, Sipponen MH. Catalyst-Free Synthesis of Lignin Vitrimers with Tunable Mechanical Properties: Circular Polymers and Recoverable Adhesives. ACS APPLIED MATERIALS & INTERFACES 2021; 13:57952-57961. [PMID: 34813290 PMCID: PMC8662642 DOI: 10.1021/acsami.1c17412] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/15/2021] [Indexed: 06/04/2023]
Abstract
Biobased circular materials are alternatives to fossil-based engineering plastics, but simple and material-efficient synthetic routes are needed for industrial scalability. Here, a series of lignin-based vitrimers built on dynamic acetal covalent networks with a gel content exceeding 95% were successfully prepared in a one-pot, thermally activated, and catalyst-free "click" addition of softwood kraft lignin (SKL) to poly(ethylene glycol) divinyl ether (PDV). The variation of the content of lignin from 28 to 50 wt % was used to demonstrate that the mechanical properties of the vitrimers can be widely tuned in a facile way. The lowest lignin content (28 wt %) showed a tensile strength of 3.3 MPa with 35% elongation at break, while the corresponding values were 50.9 MPa and 1.0% for the vitrimer containing 50 wt % of lignin. These lignin-based vitrimers also exhibited excellent performance as recoverable adhesives for different substrates such as aluminum and wood, with a lap shear test strength of 6.0 and 2.6 MPa, respectively. In addition, recyclability of the vitrimer adhesives showed preservation of the adhesion performance exceeding 90%, indicating a promising potential for their use in sustainable circular materials.
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Affiliation(s)
| | | | - Mika H. Sipponen
- Department of Materials and Environmental
Chemistry, Stockholm University, Svante Arrhenius Väg 16C, SE-106 91 Stockholm, Sweden
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44
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A bio-based epoxy resin derived from p-hydroxycinnamic acid with high mechanical properties and flame retardancy. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.12.067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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45
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46
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Tangthana-umrung K, Poutrel QA, Gresil M. Epoxy Homopolymerization as a Tool to Tune the Thermo-Mechanical Properties and Fracture Toughness of Vitrimers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00861] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | - Quentin Arthur Poutrel
- Molecular, Macromolecular Chemistry, and Materials, ESPCI Paris, PSL University, CNRS, 10 rue Vauquelin, Paris 75005, France
| | - Matthieu Gresil
- i-Composites Lab, Department of Material Science and Engineering, Department of Mechanical and Aerospace Engineering, Monash University, Wellington Road, Clayton, VIC 3800, Australia
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47
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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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48
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Vitrimers of polyolefin elastomer with physically cross-linked network. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02573-3] [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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Qi F, Chaoqun Z, Weijun Y, Qingwen W, Rongxian O. Lignin-based polymers. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2020-0066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
On the basis of the world’s continuing consumption of raw materials, there was an urgent need to seek sustainable resources. Lignin, the second naturally abundant biomass, accounts for 15–35% of the cell walls of terrestrial plants and is considered waste for low-cost applications such as thermal and electricity generation. The impressive characteristics of lignin, such as its high abundance, low density, biodegradability, antioxidation, antibacterial capability, and its CO2 neutrality and enhancement, render it an ideal candidate for developing new polymer/composite materials. In past decades, considerable works have been conducted to effectively utilize waste lignin as a component in polymer matrices for the production of high-performance lignin-based polymers. This chapter is intended to provide an overview of the recent advances and challenges involving lignin-based polymers utilizing lignin macromonomer and its derived monolignols. These lignin-based polymers include phenol resins, polyurethane resins, polyester resins, epoxy resins, etc. The structural characteristics and functions of lignin-based polymers are discussed in each section. In addition, we also try to divide various lignin reinforced polymer composites into different polymer matrices, which can be separated into thermoplastics, rubber, and thermosets composites. This chapter is expected to increase the interest of researchers worldwide in lignin-based polymers and develop new ideas in this field.
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Affiliation(s)
- Fan Qi
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University , Guangzhou , 510642 , P. R. China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology , Guangzhou , P. R. China
| | - Zhang Chaoqun
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University , Guangzhou , 510642 , P. R. China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology , Guangzhou , P. R. China
| | - Yang Weijun
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University , 214122 Wuxi , P. R. China
| | - Wang Qingwen
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University , Guangzhou , 510642 , P. R. China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology , Guangzhou , P. R. China
| | - Ou Rongxian
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University , Guangzhou , 510642 , P. R. China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology , Guangzhou , P. R. China
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50
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Lian W, Han H, Zhang X, Peng G, Jia Z, Zhang Z. Polyurethane modified epoxy vitrimer and its stress relaxation behavior. JOURNAL OF POLYMER ENGINEERING 2021. [DOI: 10.1515/polyeng-2020-0328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Anhydride cured epoxy vitrimers usually exhibit desired mechanical strength but poor toughness and slow transesterification rate. Therefore, the repairing property of the material was restricted. In this paper, polyurethane modified epoxy vitrimer (PU-Epv) was prepared. PU was introduced into the vitrimer system of tetrahydrophthalic anhydride cured epoxy to improve the toughness of the material. Meanwhile, because of the presence of amino ester, the transesterification reaction was promoted and the activation energy of the transesterification was only 33.59 kJ/mol. In the thermal welding experiment, the material could be welded at least five times, and scratches on the surface of the samples could be efficiently repaired within 30 min. The toughness of the material was improved without damaging the strength. Meanwhile, the hard thermosetting epoxy was endowed with excellent repairing properties to increase the service life of the material.
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Affiliation(s)
- Weiqiang Lian
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , China
| | - Huipeng Han
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , China
| | - Xiaoxin Zhang
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , China
| | - Guirong Peng
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , China
| | - Zhaojing Jia
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , China
| | - Zhenlin Zhang
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , China
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