Fracture Behavior of a 2D Imine‐Based Polymer
Abstract 2D polymers have emerged as a highly promising category of nanomaterials, owing to their exceptional properties. However, the understanding of their fracture behavior and failure mechanisms remains still limited, posing challenges to their durability in practical applications. This work pre...
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Wiley
2024-11-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202407017 |
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| author | Bowen Zhang Xiaohui Liu David Bodesheim Wei Li André Clausner Jinxin Liu Birgit Jost Arezoo Dianat Renhao Dong Xinliang Feng Gianaurelio Cuniberti Zhongquan Liao Ehrenfried Zschech |
| author_facet | Bowen Zhang Xiaohui Liu David Bodesheim Wei Li André Clausner Jinxin Liu Birgit Jost Arezoo Dianat Renhao Dong Xinliang Feng Gianaurelio Cuniberti Zhongquan Liao Ehrenfried Zschech |
| author_sort | Bowen Zhang |
| collection | DOAJ |
| description | Abstract 2D polymers have emerged as a highly promising category of nanomaterials, owing to their exceptional properties. However, the understanding of their fracture behavior and failure mechanisms remains still limited, posing challenges to their durability in practical applications. This work presents an in‐depth study of the fracture kinetics of a 2D polyimine film, utilizing in situ tensile testing within a transmission electron microscope (TEM). Employing meticulously optimized transferring and patterning techniques, an elastic strain of ≈6.5% is achieved, corresponding to an elastic modulus of (8.6 ± 2.5) GPa of polycrystalline 2D polyimine thin films. In step‐by‐step fractures, multiple cracking events uncover the initiation and development of side crack near the main crack tip which toughens the 2D film. Simultaneously captured strain evolution through digital image correlation (DIC) analysis and observation on the crack edge confirm the occurrence of transgranular fracture patterns apart from intergranular fracture. A preferred cleavage orientation in transgranular fracture is attributed to the difference in directional flexibility along distinct orientations, which is substantiated by density functional‐based tight binding (DFTB) calculations. These findings construct a comprehensive understanding of intrinsic mechanical properties and fracture behavior of an imine‐linked polymer and provide insights and implications for the rational design of 2D polymers. |
| format | Article |
| id | doaj-art-44280384fe0c4c7cbd490d5540f6a13e |
| institution | DOAJ |
| issn | 2198-3844 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-44280384fe0c4c7cbd490d5540f6a13e2025-08-20T02:58:41ZengWileyAdvanced Science2198-38442024-11-011142n/an/a10.1002/advs.202407017Fracture Behavior of a 2D Imine‐Based PolymerBowen Zhang0Xiaohui Liu1David Bodesheim2Wei Li3André Clausner4Jinxin Liu5Birgit Jost6Arezoo Dianat7Renhao Dong8Xinliang Feng9Gianaurelio Cuniberti10Zhongquan Liao11Ehrenfried Zschech12Fraunhofer Institute for Ceramic Technologies and System (IKTS) Maria‐Reiche‐Straße 2 01109 Dresden GermanyFaculty of Chemistry and Food Chemistry Technical University of Dresden 01062 Dresden GermanyInstitute for Materials Science and Max Bergmann Center for Biomaterials Technical University of Dresden 01062 Dresden GermanyCollege of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. ChinaFraunhofer Institute for Ceramic Technologies and System (IKTS) Maria‐Reiche‐Straße 2 01109 Dresden GermanyFaculty of Chemistry and Food Chemistry Technical University of Dresden 01062 Dresden GermanyFraunhofer Institute for Ceramic Technologies and System (IKTS) Maria‐Reiche‐Straße 2 01109 Dresden GermanyInstitute for Materials Science and Max Bergmann Center for Biomaterials Technical University of Dresden 01062 Dresden GermanyKey Laboratory of Colloid and Interface Chemistry of the Ministry of Education School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. ChinaFaculty of Chemistry and Food Chemistry Technical University of Dresden 01062 Dresden GermanyInstitute for Materials Science and Max Bergmann Center for Biomaterials Technical University of Dresden 01062 Dresden GermanyFraunhofer Institute for Ceramic Technologies and System (IKTS) Maria‐Reiche‐Straße 2 01109 Dresden GermanyFaculty of Electrical and Computer Engineering Technical University of Dresden 01062 Dresden GermanyAbstract 2D polymers have emerged as a highly promising category of nanomaterials, owing to their exceptional properties. However, the understanding of their fracture behavior and failure mechanisms remains still limited, posing challenges to their durability in practical applications. This work presents an in‐depth study of the fracture kinetics of a 2D polyimine film, utilizing in situ tensile testing within a transmission electron microscope (TEM). Employing meticulously optimized transferring and patterning techniques, an elastic strain of ≈6.5% is achieved, corresponding to an elastic modulus of (8.6 ± 2.5) GPa of polycrystalline 2D polyimine thin films. In step‐by‐step fractures, multiple cracking events uncover the initiation and development of side crack near the main crack tip which toughens the 2D film. Simultaneously captured strain evolution through digital image correlation (DIC) analysis and observation on the crack edge confirm the occurrence of transgranular fracture patterns apart from intergranular fracture. A preferred cleavage orientation in transgranular fracture is attributed to the difference in directional flexibility along distinct orientations, which is substantiated by density functional‐based tight binding (DFTB) calculations. These findings construct a comprehensive understanding of intrinsic mechanical properties and fracture behavior of an imine‐linked polymer and provide insights and implications for the rational design of 2D polymers.https://doi.org/10.1002/advs.2024070172D polymerfracture mechanismsin situ testtransmission electron microscope (TEM) |
| spellingShingle | Bowen Zhang Xiaohui Liu David Bodesheim Wei Li André Clausner Jinxin Liu Birgit Jost Arezoo Dianat Renhao Dong Xinliang Feng Gianaurelio Cuniberti Zhongquan Liao Ehrenfried Zschech Fracture Behavior of a 2D Imine‐Based Polymer Advanced Science 2D polymer fracture mechanisms in situ test transmission electron microscope (TEM) |
| title | Fracture Behavior of a 2D Imine‐Based Polymer |
| title_full | Fracture Behavior of a 2D Imine‐Based Polymer |
| title_fullStr | Fracture Behavior of a 2D Imine‐Based Polymer |
| title_full_unstemmed | Fracture Behavior of a 2D Imine‐Based Polymer |
| title_short | Fracture Behavior of a 2D Imine‐Based Polymer |
| title_sort | fracture behavior of a 2d imine based polymer |
| topic | 2D polymer fracture mechanisms in situ test transmission electron microscope (TEM) |
| url | https://doi.org/10.1002/advs.202407017 |
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