{"title":"基于动态双交联网络的具有高机械稳健性、低迟滞性、抗疲劳性和抗菌性的可治愈和可回收的超分子聚氨酯-尿素弹性体","authors":"Xionghui Wu, Qihui Tang, Yichao Hu, Yaling Lin, Anqiang Zhang","doi":"10.1016/j.polymer.2025.128745","DOIUrl":null,"url":null,"abstract":"Polyurethane elastomers, characterized by their exceptional mechanical properties, self-healing capabilities, recyclability, and multifunctionality, have found extensive applications in the fields of tissue engineering, medical health, and flexible electronics. However, attaining mechanical robustness, low hysteresis, fatigue resistance, self-healing, and recyclability through existing network structures presents a significant challenge. In this study, a supramolecular poly(urethane-urea) elastomer featuring a double crosslinked network with dual dynamic bonds is developed by incorporating imidazolidinyl urea (IU) as a multiple hydrogen-bonding motif and dynamic disulfide bonds into supramolecular networks. Owing to this structural feature design strategy, the supramolecular poly(urethane-urea) elastomer exhibits remarkable properties, including high strength (50.8 MPa), ultrahigh toughness (932 MJ/m<ce:sup loc=\"post\">3</ce:sup>), excellent fracture energy (195.6 kJ/m<ce:sup loc=\"post\">2</ce:sup>), low hysteresis (10.8 %), and outstanding anti-fatigue properties, as evidenced by cyclic tensile testing. Furthermore, the dynamic disulfide bond and reversible hydrogen bonding dual networks bestow the elastomers with favorable self-healing properties and recyclability. Additionally, due to the synergistic effect of IU and elemental S, the polymer film also demonstrates excellent antibacterial properties against Gram-positive <ce:italic>Staphylococcus albus</ce:italic> and Gram-negative <ce:italic>Escherichia coli</ce:italic>, while maintaining low toxicity to mouse fibroblast cells (L929). Moreover, the fabricated sensor exhibits long-term stability and can sensitively detect the bending motion of human joints, attributable to the stable double crosslinked networks. This study showcases the design of self-healing and recyclable polyurethane elastomers with high mechanical robustness, low hysteresis, fatigue resistance, and antibacterial properties, thereby providing a novel approach for the development of medical and electronic materials in the future.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"13 1","pages":""},"PeriodicalIF":4.1000,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Healable and recyclable supramolecular poly(urethane-urea) elastomers with high mechanical robustness, low hysteresis, fatigue resistance and antibacterial based on dynamic double crosslinked networks\",\"authors\":\"Xionghui Wu, Qihui Tang, Yichao Hu, Yaling Lin, Anqiang Zhang\",\"doi\":\"10.1016/j.polymer.2025.128745\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Polyurethane elastomers, characterized by their exceptional mechanical properties, self-healing capabilities, recyclability, and multifunctionality, have found extensive applications in the fields of tissue engineering, medical health, and flexible electronics. However, attaining mechanical robustness, low hysteresis, fatigue resistance, self-healing, and recyclability through existing network structures presents a significant challenge. In this study, a supramolecular poly(urethane-urea) elastomer featuring a double crosslinked network with dual dynamic bonds is developed by incorporating imidazolidinyl urea (IU) as a multiple hydrogen-bonding motif and dynamic disulfide bonds into supramolecular networks. Owing to this structural feature design strategy, the supramolecular poly(urethane-urea) elastomer exhibits remarkable properties, including high strength (50.8 MPa), ultrahigh toughness (932 MJ/m<ce:sup loc=\\\"post\\\">3</ce:sup>), excellent fracture energy (195.6 kJ/m<ce:sup loc=\\\"post\\\">2</ce:sup>), low hysteresis (10.8 %), and outstanding anti-fatigue properties, as evidenced by cyclic tensile testing. Furthermore, the dynamic disulfide bond and reversible hydrogen bonding dual networks bestow the elastomers with favorable self-healing properties and recyclability. Additionally, due to the synergistic effect of IU and elemental S, the polymer film also demonstrates excellent antibacterial properties against Gram-positive <ce:italic>Staphylococcus albus</ce:italic> and Gram-negative <ce:italic>Escherichia coli</ce:italic>, while maintaining low toxicity to mouse fibroblast cells (L929). Moreover, the fabricated sensor exhibits long-term stability and can sensitively detect the bending motion of human joints, attributable to the stable double crosslinked networks. This study showcases the design of self-healing and recyclable polyurethane elastomers with high mechanical robustness, low hysteresis, fatigue resistance, and antibacterial properties, thereby providing a novel approach for the development of medical and electronic materials in the future.\",\"PeriodicalId\":405,\"journal\":{\"name\":\"Polymer\",\"volume\":\"13 1\",\"pages\":\"\"},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2025-06-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Polymer\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1016/j.polymer.2025.128745\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1016/j.polymer.2025.128745","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
Healable and recyclable supramolecular poly(urethane-urea) elastomers with high mechanical robustness, low hysteresis, fatigue resistance and antibacterial based on dynamic double crosslinked networks
Polyurethane elastomers, characterized by their exceptional mechanical properties, self-healing capabilities, recyclability, and multifunctionality, have found extensive applications in the fields of tissue engineering, medical health, and flexible electronics. However, attaining mechanical robustness, low hysteresis, fatigue resistance, self-healing, and recyclability through existing network structures presents a significant challenge. In this study, a supramolecular poly(urethane-urea) elastomer featuring a double crosslinked network with dual dynamic bonds is developed by incorporating imidazolidinyl urea (IU) as a multiple hydrogen-bonding motif and dynamic disulfide bonds into supramolecular networks. Owing to this structural feature design strategy, the supramolecular poly(urethane-urea) elastomer exhibits remarkable properties, including high strength (50.8 MPa), ultrahigh toughness (932 MJ/m3), excellent fracture energy (195.6 kJ/m2), low hysteresis (10.8 %), and outstanding anti-fatigue properties, as evidenced by cyclic tensile testing. Furthermore, the dynamic disulfide bond and reversible hydrogen bonding dual networks bestow the elastomers with favorable self-healing properties and recyclability. Additionally, due to the synergistic effect of IU and elemental S, the polymer film also demonstrates excellent antibacterial properties against Gram-positive Staphylococcus albus and Gram-negative Escherichia coli, while maintaining low toxicity to mouse fibroblast cells (L929). Moreover, the fabricated sensor exhibits long-term stability and can sensitively detect the bending motion of human joints, attributable to the stable double crosslinked networks. This study showcases the design of self-healing and recyclable polyurethane elastomers with high mechanical robustness, low hysteresis, fatigue resistance, and antibacterial properties, thereby providing a novel approach for the development of medical and electronic materials in the future.
期刊介绍:
Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics.
The main scope is covered but not limited to the following core areas:
Polymer Materials
Nanocomposites and hybrid nanomaterials
Polymer blends, films, fibres, networks and porous materials
Physical Characterization
Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films
Polymer Engineering
Advanced multiscale processing methods
Polymer Synthesis, Modification and Self-assembly
Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization
Technological Applications
Polymers for energy generation and storage
Polymer membranes for separation technology
Polymers for opto- and microelectronics.