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Zhao X, Demchuk Z, Tian J, Luo J, Li B, Cao K, Sokolov AP, Hun D, Saito T, Cao PF. Ductile adhesive elastomers with force-triggered ultra-high adhesion strength. MATERIALS HORIZONS 2024; 11:969-977. [PMID: 38053446 DOI: 10.1039/d3mh01280h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Elastomers play a vital role in many forthcoming advanced technologies in which their adhesive properties determine materials' interface performance. Despite great success in improving the adhesive properties of elastomers, permanent adhesives tend to stick to the surfaces prematurely or result in poor contact depending on the installation method. Thus, elastomers with on-demand adhesion that is not limited to being triggered by UV light or heat, which may not be practical for scenarios that do not allow an additional external source, provide a solution to various challenges in conventional adhesive elastomers. Herein, we report a novel, ready-to-use, ultra high-strength, ductile adhesive elastomer with an on-demand adhesion feature that can be easily triggered by a compression force. The precursor is mainly composed of a capsule-separated, two-component curing system. After a force-trigger and curing process, the ductile adhesive elastomer exhibits a peel strength and a lap shear strength of 1.2 × 104 N m-1 and 7.8 × 103 kPa, respectively, which exceed the reported values for advanced ductile adhesive elastomers. The ultra-high adhesion force is attributed to the excellent surface contact of the liquid-like precursor and to the high elastic modulus of the cured elastomer that is reinforced by a two-phase design. Incorporation of such on-demand adhesion into an elastomer enables a controlled delay between installation and curing so that these can take place under their individual ideal conditions, effectively reducing the energy cost, preventing failures, and improving installation processes.
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Affiliation(s)
- Xiao Zhao
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Zoriana Demchuk
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Jia Tian
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Jiancheng Luo
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Bingrui Li
- The Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, TN 37996, USA
| | - Ke Cao
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Alexei P Sokolov
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
| | - Diana Hun
- Buildings and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Tomonori Saito
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
- The Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, TN 37996, USA
| | - Peng-Fei Cao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
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2
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Tadge T, Garje S, Saxena V, Raichur AM. Application of Shape Memory and Self-Healable Polymers/Composites in the Biomedical Field: A Review. ACS OMEGA 2023; 8:32294-32310. [PMID: 37720748 PMCID: PMC10500588 DOI: 10.1021/acsomega.3c04569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/22/2023] [Indexed: 09/19/2023]
Abstract
Shape memory-assisted self-healing polymers have drawn attention over the past few years owing to their interdisciplinary and wide range of applications. Self-healing and shape memory are two approaches used to improve the applicability of polymers in the biomedical field. Combining both these approaches in a polymer composite opens new possibilities for its use in biomedical applications, such as the "close then heal" concept, which uses the shape memory capabilities of polymers to bring injured sections together to promote autonomous healing. This review focuses on using shape memory-assisted self-healing approaches along with their respective affecting factors for biomedical applications such as tissue engineering, drug delivery, biomaterial-inks, and 4D printed scaffolds, soft actuators, wearable electronics, etc. In addition, quantification of self-healing and shape memory efficiency is also discussed. The challenges and prospects of these polymers for biomedical applications have been summarized.
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Affiliation(s)
| | | | - Varun Saxena
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Ashok M. Raichur
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
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3
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Yu J, Yang H, Ji H, Zhang X, Wang R, Zhao S, Wang R, Zhang L. Solvent-Free Environmentally Friendly Method to Prepare Thermo-Reversible Fully Bio-Based Elastomers. ACS OMEGA 2023; 8:32146-32158. [PMID: 37692234 PMCID: PMC10483686 DOI: 10.1021/acsomega.3c04528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/14/2023] [Indexed: 09/12/2023]
Abstract
Most rubber products come from petrochemical resources, which are increasingly in short supply. Rubber products that formed irreversible chemical bonds in the vulcanization process are difficult to recycle, resulting in a serious waste of resources. Therefore, it is important to prepare a kind of reprocessable biobased elastomers. Using furfuryl methacrylate (FMA) as the modified monomer, poly(dibutyl itaconate-myrcene-furfuryl methacrylate) (PDBIMFA) was synthesized by high-temperature emulsion polymerization successfully. The structure and compositions of PDBIMFA were characterized by Fourier transform infrared and 1H NMR, and the effects of different FMA contents on the structures and properties of PDBIMFA were systematically studied. Based on the Diels-Alder reaction, bismaleimide (BMI) and carbon black (CB) were introduced into PDBIMFA as cross-linking agents and reinforcing fillers, respectively, by the melt blending method, and PDBIMFA-BMI elastomer materials and CB/PDBIMFA-BMI elastomer composites with thermo-reversible cross-linking characteristics were prepared. The effects of the ratio of FMA and BMI on the mechanical properties of PDBIMFA-BMI were studied. PDBIMFA-BMI and CB/PDBIMFA-BMI were reprocessed twice, and the recovery rate of tensile strength was both more than 90%. The addition of CB was found to play a reinforcing role in the elastomer and with the introduction of the amount of CB, the reprocessability of composite remained at a good level. It is hoped that this research will provide a new strategy for the sustainable development of bio-based elastomer materials.
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Affiliation(s)
- Jie Yu
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Hui Yang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Haijun Ji
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xin Zhang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Rui Wang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Shuainan Zhao
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Runguo Wang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Liqun Zhang
- Beijing State Key Laboratory of Organic-Inorganic
Composites & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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4
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Yan J, Jiang W, Kang G, Li Q, Tao L, Wang X, Yin J. Synergistic chemo-photo anticancer therapy by using reversible Diels-Alder dynamic covalent bond mediated polyprodrug amphiphiles and immunoactivation investigation. Biomater Sci 2023; 11:5819-5830. [PMID: 37439438 DOI: 10.1039/d3bm00889d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Highly efficient endocytosis and multi-approach integrated therapeutic tactics are important factors in oncotherapy. With the aid of thermally reversible furan-maleimide dynamic covalent bonds and the "polyprodrug amphiphiles" concept, thermo- and reduction-responsive PEG(-COOH)Fu/MI(-SS-)CPT copolymers were fabricated by the Diels-Alder (D-A) coupling of hydrophilic Fu(-COOH)-PEG and hydrophobic MI(-SS-)-CPT building blocks. The copolymers could self-assemble to form composite nanoparticles with a photothermal conversion reagent (IR780) and maintain excellent stability. In the in vitro simulated environments, the composite nanoparticles could detach Fu(-COOH)-PEG chains by a retro-D-A reaction upon near-infrared light (NIR) irradiation and reduce the size to facilitate endocytosis. Once in the intracellular environment, glutathione (GSH) could trigger a cascade reaction to release active CPT drugs to achieve chemotherapy, which could be further promoted by NIR light induced photothermal therapy. The in vivo mouse tumor model experiments demonstrated that these nanoparticles had an excellent therapeutic effect on solid tumors and inhibited their recurrence. Not only that, the synergistic chemical and optical therapy induced body immune response was also systematically evaluated; the maturation of dendritic cells, the proliferation of T cells, the increase of high mobility group box protein 1, and the decrease of immunosuppressive regulatory T cells confirmed that such synergistic therapy could effectively provide immune protection to the body. We believe such in situ generation of small-sized therapeutic units brought by a dynamically reversible D-A reaction could expand the pathway to design next generation drug delivery systems possessing superior design philosophy and excellent practice effects compared to currently available ones.
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Affiliation(s)
- Jinhao Yan
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering Hefei University of Technology and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering Hefei, Anhui, 230009, P. R. China.
| | - Wenlong Jiang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering Hefei University of Technology and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering Hefei, Anhui, 230009, P. R. China.
| | - Guijie Kang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University Hefei, Anhui, 230032, P. R. China.
| | - Qingjie Li
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering Hefei University of Technology and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering Hefei, Anhui, 230009, P. R. China.
| | - Longxiang Tao
- Department of Radiology, the First Affiliated Hospital of Anhui Medical University Hefei, Anhui, 230022, P. R. China.
| | - Xuefu Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University Hefei, Anhui, 230032, P. R. China.
| | - Jun Yin
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering Hefei University of Technology and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering Hefei, Anhui, 230009, P. R. China.
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5
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Kong L, Yang Y, Wu M, Teng X, Wang Y, Xu C. Design of epoxidized natural rubber/poly(lipoic acid) elastomer with fast and efficient self-healing under a mild temperature. Int J Biol Macromol 2022; 223:446-457. [PMID: 36368356 DOI: 10.1016/j.ijbiomac.2022.11.040] [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: 09/27/2022] [Revised: 11/04/2022] [Accepted: 11/05/2022] [Indexed: 11/10/2022]
Abstract
Most of the dynamic covalent bonds (DCBs) for self-healing rubber must be activated at relatively high temperatures due to the requirement of high energy during the exchange of dynamic bonds, which may lead to unexpected degradation or excessive crosslinking of rubber. Herein, we designed and fabricated a highly stretchable, self-healable and reprocessable rubber by introducing dynamic disulfide bonds into the crosslink network of epoxidized natural rubber (ENR). Lipoic acid (LA) was firstly uniformly dispersed into ENR via a latex film formation technique, and then underwent a dynamic covalent ring-opening self-polymerization during hot pressing process, during which the carboxyl group of poly(LA) attacked the epoxy group of ENR to form β-hydroxyl ester bond crosslinks. As a result, a revisable covalently crosslinked network without rigid steric hindrance groups was constructed, which exhibited a super self-healing efficiency of 99 % after self-healing at 80 °C for only 3 h. The elongation at break of the elastomer could reach 1115 % and the recovery rate of reprocessing was as high as 91 %.
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Affiliation(s)
- Lingli Kong
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yunpeng Yang
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Mingliang Wu
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Xiaodan Teng
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, China; Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning 530004, China
| | - Yueqiong Wang
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Guangdong 524001, China.
| | - Chuanhui Xu
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Guangdong 524001, China; Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, China; Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning 530004, China.
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6
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Aiswarya S, Awasthi P, Banerjee SS. Self-healing thermoplastic elastomeric materials: Challenges, opportunities and new approaches. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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7
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Behera PK, Kumar A, Mohanty S, Gupta VK. Overview on Post-Polymerization Functionalization of Butyl Rubber and Properties. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Prasanta Kumar Behera
- Polymer Synthesis and Catalysis Group, Reliance Research and Development Center, Reliance Industries Limited, Navi Mumbai 400701, India
| | - Amit Kumar
- Polymer Synthesis and Catalysis Group, Reliance Research and Development Center, Reliance Industries Limited, Navi Mumbai 400701, India
| | - Subhra Mohanty
- Polymer Synthesis and Catalysis Group, Reliance Research and Development Center, Reliance Industries Limited, Navi Mumbai 400701, India
| | - Virendra Kumar Gupta
- Polymer Synthesis and Catalysis Group, Reliance Research and Development Center, Reliance Industries Limited, Navi Mumbai 400701, India
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8
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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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9
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Thermal scratch healing of poly(methyl methacrylate-co-methacrylate) ionomers neutralized with various cations. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03270-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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10
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Choi IH, Jeong YG, Kim JS. Relation between the amount of glycerol, glass transition temperature, and ion content of styrene-methacrylate ionomers. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Utrera-Barrios S, Verdejo R, López-Manchado MÁ, Santana MH. The Final Frontier of Sustainable Materials: Current Developments in Self-Healing Elastomers. Int J Mol Sci 2022; 23:4757. [PMID: 35563147 PMCID: PMC9101787 DOI: 10.3390/ijms23094757] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 04/24/2022] [Indexed: 02/01/2023] Open
Abstract
It is impossible to describe the recent progress of our society without considering the role of polymers; however, for a broad audience, "polymer" is usually related to environmental pollution. The poor disposal and management of polymeric waste has led to an important environmental crisis, and, within polymers, plastics have attracted bad press despite being easily reprocessable. Nonetheless, there is a group of polymeric materials that is particularly more complex to reprocess, rubbers. These macromolecules are formed by irreversible crosslinked networks that give them their characteristic elastic behavior, but at the same time avoid their reprocessing. Conferring them a self-healing capacity stands out as a decisive approach for overcoming this limitation. By this mean, rubbers would be able to repair or restore their damage automatically, autonomously, or by applying an external stimulus, increasing their lifetime, and making them compatible with the circular economy model. Spain is a reference country in the implementation of this strategy in rubbery materials, achieving successful self-healable elastomers with high healing efficiency and outstanding mechanical performance. This article presents an exhaustive summary of the developments reported in the previous 10 years, which demonstrates that this property is the last frontier in search of truly sustainable materials.
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Affiliation(s)
| | | | - Miguel Ángel López-Manchado
- Institute of Polymer Science and Technology (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain; (S.U.-B.); (R.V.)
| | - Marianella Hernández Santana
- Institute of Polymer Science and Technology (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain; (S.U.-B.); (R.V.)
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12
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Xu X, Chen Z, Zhou Y, Jia X, Gong D. RAFT
co‐polymerization of functional myrcene with styrene. POLYM INT 2022. [DOI: 10.1002/pi.6390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xueqin Xu
- Technology Center, China Tobacco Guangxi Industrial Co, Ltd. Nanning 530001 P.R. China
| | - Zhiyan Chen
- Technology Center, China Tobacco Guangxi Industrial Co, Ltd. Nanning 530001 P.R. China
| | - Yun Zhou
- Technology Center, China Tobacco Guangxi Industrial Co, Ltd. Nanning 530001 P.R. China
| | - Xiaoyu Jia
- Key Laboratory of Urban Environment and Health Institute of Urban Environment, Chinese Academy of Sciences No.1799, Jimei Road Xiamen Fujian 361021 P. R. China
- Ningbo Urban Environment Observation and Research Station‐NUEORS, Chinese Academy of Sciences, Ningbo Zhejiang 315830 P. R. China
| | - Dirong Gong
- Faculty of Materials Science and Chemical Engineering Ningbo University Ningbo 315211 P. R. China
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13
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Chen B, Liu X, Liu J, Feng Z, Zheng X, Wu X, Yang C, Liang L. Intrinsically self-healing, reprocessable and recyclable epoxy thermosets based on dynamic reversible urea bonds. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105184] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Lu J, Deng Y, Zhong K, Huang Z, Jin LY. Construction of nanoaggregates from amphiphilic supramolecules containing barbiturate and
Hamilton
wedge units. POLYM INT 2021. [DOI: 10.1002/pi.6318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jie Lu
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education Yanbian University Yanji China
| | - Yingying Deng
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education Yanbian University Yanji China
| | - Keli Zhong
- College of Chemistry, Chemical Engineering and Food Safety, Bohai University Jinzhou China
| | - Zhegang Huang
- School of Chemistry, Sun Yat Sen University Guangzhou China
| | - Long Yi Jin
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education Yanbian University Yanji China
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15
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Kaur A, Gautrot JE, Cavalli G, Watson D, Bickley A, Akutagawa K, Busfield JJC. Novel Crosslinking System for Poly-Chloroprene Rubber to Enable Recyclability and Introduce Self-Healing. Polymers (Basel) 2021; 13:3347. [PMID: 34641163 PMCID: PMC8512348 DOI: 10.3390/polym13193347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 11/17/2022] Open
Abstract
The introduction of dynamic bonds capable of mediating self-healing in a fully cross-linked polychloroprene network can only occur if the reversible moieties are carried by the cross-linker itself or within the main polymer backbone. Conventional cross-linking is not suitable for such a purpose. In the present work, a method to develop a self-healable and recyclable polychloroprene rubber is presented. Dynamic disulfide bonds are introduced as part of the structure of a crosslinker (liquid polysulfide polymer, Thiokol LP3) coupled to the polymer backbone via thermally initiated thiol-ene reaction. The curing and kinetic parameters were determined by isothermal differential scanning calorimetry and by moving die rheometer analysis; tensile testing was carried to compare the tensile strength of cured compound, healed compounds and recycled compounds, while chemical analysis was conducted by surface X-ray Photoelectron Spectroscopy. Three formulations with increasing concentrations of Thiokol LP-3 were studied (2, 4, 6 phr), reaching a maximum ultimate tensile strength of 22.4 MPa and ultimate tensile strain of 16.2 with 2 phr of Thiokol LP-3, 11.7 MPa and 10.7 strain with 4 phr and 5.6 MPa and 7.3 strain with 6 phr. The best healing efficiencies were obtained after 24 h of healing at 80 °C, increasing with the concentration of Thiokol LP-3, reaching maximum values of 4.5% 4.4% 13.4% with 2 phr, 4 phr and 6 phr, respectively, while the highest recycling efficiency was obtained with 4 phr of Thiokol LP-3, reaching 11.2%.
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Affiliation(s)
- Anureet Kaur
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK; (A.K.); (J.E.G.); (G.C.); (K.A.)
| | - Julien E. Gautrot
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK; (A.K.); (J.E.G.); (G.C.); (K.A.)
| | - Gabriele Cavalli
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK; (A.K.); (J.E.G.); (G.C.); (K.A.)
| | - Douglas Watson
- Weir Advanced Research Centre, Glasgow G1 1RD, UK; (D.W.); (A.B.)
| | - Alan Bickley
- Weir Advanced Research Centre, Glasgow G1 1RD, UK; (D.W.); (A.B.)
| | - Keizo Akutagawa
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK; (A.K.); (J.E.G.); (G.C.); (K.A.)
| | - James J. C. Busfield
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK; (A.K.); (J.E.G.); (G.C.); (K.A.)
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16
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Huang L, Yang Y, Niu Z, Wu R, Fan W, Dai Q, He J, Bai C. Catalyst-Free Vitrimer Cross-Linked by Biomass-Derived Compounds with Mechanical Robustness, Reprocessability, and Multishape Memory Effects. Macromol Rapid Commun 2021; 42:e2100432. [PMID: 34524718 DOI: 10.1002/marc.202100432] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/27/2021] [Indexed: 12/17/2022]
Abstract
Vitrimerization of thermoset polymers plays an important role in addressing resource recovery and reuse. Vitrimer elastomers with good mechanical properties often require well-designed crosslinking agents or fillers, but this increases processing complexity or reduces vitrimer dynamic properties. In this report, a simple green strategy to build a strong vitrimer elastomer is designed. Commercially available epoxidized natural rubber (ENR) is cross-linked with biomass-derived D-Fructose 1,6-bisphosphoric acid to get a vitrimer elastomer cross-linked by β-hydroxy phosphate ester bonds and has abundant hydrogen bonds. Hydrogen bonds can preferentially break and dissipate energy under external forces, which makes the sample robust. The topological network can be reformed at high temperatures through the dynamic exchange of β-hydroxy phosphate ester bonds, which gives the material malleability and recyclability. In addition, through the strategy of combining reprocessing and welding, multiple shape memory effects can be achieved in one postprocessing step. Considering that a variety of commercially available epoxy polymers are easily available, it is believed that this strategy can be a simple and versatile way to enable commercial epoxy polymers to achieve green crosslinking through biomass crosslink agents, which results in robust and recyclable vitrimers based on β-hydroxy phosphate bonds.
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Affiliation(s)
- Lingyun Huang
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,Department of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yinxin Yang
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,Department of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Zhen Niu
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,Department of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Ruiyao Wu
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,Department of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Weifeng Fan
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Quanquan Dai
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Jianyun He
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Chenxi Bai
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,Department of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
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Soares FA, Steinbüchel A. Enzymatic and Chemical Approaches for Post-Polymerization Modifications of Diene Rubbers: Current state and Perspectives. Macromol Biosci 2021; 21:e2100261. [PMID: 34528407 DOI: 10.1002/mabi.202100261] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/26/2021] [Indexed: 11/07/2022]
Abstract
Diene rubbers are polymeric materials which present elastic properties and have double bonds in the macromolecular backbone after the polymerization process. Post-polymerization modifications of rubbers can be conducted by enzymatic or chemical methods. Enzymes are environmentally friendly catalysts and with the increasing demand for rubber waste management, biodegradation and biomodifications have become hot topics of research. Some rubbers are renewable materials and are a source of organic molecules, and biodegradation can be conducted to obtain either oligomers or monomers. On the other hand, chemical modifications of rubbers by click-chemistry are important strategies for the creation and combination of new materials. In a way to expand the scope of uses to other non-traditional applications, several and effective modifications can be conducted with diene rubbers. Two groups of efficient tools, enzymatic, and chemical modifications in diene rubbers, are summarized in this review. By analyzing stereochemical and reactivity aspects, the authors also point to some applications perspectives for biodegradation products and to rational modifications of diene rubbers by combining both methodologies.
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Affiliation(s)
- Franciela Arenhart Soares
- International Center for Research on Innovative Biobased Materials (ICRI-BioM)-International Research Agenda, Lodz University of Technology, Żeromskiego 116, Lodz, 90-924, Poland
| | - Alexander Steinbüchel
- International Center for Research on Innovative Biobased Materials (ICRI-BioM)-International Research Agenda, Lodz University of Technology, Żeromskiego 116, Lodz, 90-924, Poland
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