Design and Characterization of Deformable Superstructures Based on Amine‐Acrylate Liquid Crystal Elastomers
Abstract Deformable superstructures are man‐made materials with large deformation properties that surpass those of natural materials. However, traditional deformable superstructures generally use conventional materials as substrates, limiting their applications in multi‐mode reconfigurable robots an...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-12-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202303594 |
| _version_ | 1797373731637559296 |
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| author | Fang Zhao Yuzhan Li Hong Gao Ran Tao Yiqi Mao Yu Chen Sheng Zhou Jianming Zhao Dong Wang |
| author_facet | Fang Zhao Yuzhan Li Hong Gao Ran Tao Yiqi Mao Yu Chen Sheng Zhou Jianming Zhao Dong Wang |
| author_sort | Fang Zhao |
| collection | DOAJ |
| description | Abstract Deformable superstructures are man‐made materials with large deformation properties that surpass those of natural materials. However, traditional deformable superstructures generally use conventional materials as substrates, limiting their applications in multi‐mode reconfigurable robots and space‐expandable morphing structures. In this work, amine‐acrylate‐based liquid crystal elastomers (LCEs) are used as deformable superstructures substrate to provide high driving stress and strain. By changing the molar ratio of amine to acrylate, the thermal and mechanical properties of the LCEs are modified. The LCE with a ratio of 0.9 exhibited improved polymerization degree, elongation at break, and toughness. Besides an anisotropic finite deformation model based on hyperelastic theory is developed for the LCEs to capture the configuration variation under temperature activation. Built upon these findings, an LCE‐based paper‐cutting structure with negative Poisson's ratio and a 2D lattice superstructure model are combined, processed, and molded by laser cutting. The developed superstructure is pre‐programmed to the configuration required for service conditions, and the deformation processes are analyzed using both experimental and finite element methods. This study is expected to advance the application of deformable superstructures and LCEs in the fields of defense and military, aerospace, and bionic robotics. |
| first_indexed | 2024-03-08T18:54:41Z |
| format | Article |
| id | doaj.art-2ca9fbb8b3c24d5d80af79df47319402 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-08T18:54:41Z |
| publishDate | 2023-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-2ca9fbb8b3c24d5d80af79df473194022023-12-28T14:55:40ZengWileyAdvanced Science2198-38442023-12-011036n/an/a10.1002/advs.202303594Design and Characterization of Deformable Superstructures Based on Amine‐Acrylate Liquid Crystal ElastomersFang Zhao0Yuzhan Li1Hong Gao2Ran Tao3Yiqi Mao4Yu Chen5Sheng Zhou6Jianming Zhao7Dong Wang8Division of Material Engineering China Academy of Space Technology Beijing 100094 P. R. ChinaDepartment of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 P. R. ChinaDivision of Material Engineering China Academy of Space Technology Beijing 100094 P. R. ChinaInstitute of Advanced Structure Technology Beijing Institute of Technology Beijing 100081 P. R. ChinaDepartment of engineering mechanics College of Mechanical and Vehicle Engineering Hunan University Changsha Hunan 410082 P. R. ChinaInstitute of Advanced Structure Technology Beijing Institute of Technology Beijing 100081 P. R. ChinaInstitute of Advanced Structure Technology Beijing Institute of Technology Beijing 100081 P. R. ChinaDepartment of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 P. R. ChinaDepartment of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 P. R. ChinaAbstract Deformable superstructures are man‐made materials with large deformation properties that surpass those of natural materials. However, traditional deformable superstructures generally use conventional materials as substrates, limiting their applications in multi‐mode reconfigurable robots and space‐expandable morphing structures. In this work, amine‐acrylate‐based liquid crystal elastomers (LCEs) are used as deformable superstructures substrate to provide high driving stress and strain. By changing the molar ratio of amine to acrylate, the thermal and mechanical properties of the LCEs are modified. The LCE with a ratio of 0.9 exhibited improved polymerization degree, elongation at break, and toughness. Besides an anisotropic finite deformation model based on hyperelastic theory is developed for the LCEs to capture the configuration variation under temperature activation. Built upon these findings, an LCE‐based paper‐cutting structure with negative Poisson's ratio and a 2D lattice superstructure model are combined, processed, and molded by laser cutting. The developed superstructure is pre‐programmed to the configuration required for service conditions, and the deformation processes are analyzed using both experimental and finite element methods. This study is expected to advance the application of deformable superstructures and LCEs in the fields of defense and military, aerospace, and bionic robotics.https://doi.org/10.1002/advs.202303594amine‐acrylate liquid crystal elastomersdeformable superstructuresfinite element analysesself‐healing capabilitiesshape memory |
| spellingShingle | Fang Zhao Yuzhan Li Hong Gao Ran Tao Yiqi Mao Yu Chen Sheng Zhou Jianming Zhao Dong Wang Design and Characterization of Deformable Superstructures Based on Amine‐Acrylate Liquid Crystal Elastomers Advanced Science amine‐acrylate liquid crystal elastomers deformable superstructures finite element analyses self‐healing capabilities shape memory |
| title | Design and Characterization of Deformable Superstructures Based on Amine‐Acrylate Liquid Crystal Elastomers |
| title_full | Design and Characterization of Deformable Superstructures Based on Amine‐Acrylate Liquid Crystal Elastomers |
| title_fullStr | Design and Characterization of Deformable Superstructures Based on Amine‐Acrylate Liquid Crystal Elastomers |
| title_full_unstemmed | Design and Characterization of Deformable Superstructures Based on Amine‐Acrylate Liquid Crystal Elastomers |
| title_short | Design and Characterization of Deformable Superstructures Based on Amine‐Acrylate Liquid Crystal Elastomers |
| title_sort | design and characterization of deformable superstructures based on amine acrylate liquid crystal elastomers |
| topic | amine‐acrylate liquid crystal elastomers deformable superstructures finite element analyses self‐healing capabilities shape memory |
| url | https://doi.org/10.1002/advs.202303594 |
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