A Liquid Crystal Elastomer‐Based Unprecedented Two‐Way Shape‐Memory Aerogel
Abstract With the advantage of reversible shape‐morphing between two different permanent shapes under external stimuli, the two‐way shape‐memory aerogel is expected to become a preferred aerogel for developing practical applications in actuators, sensors, robotics, and more. Herein, the first two‐wa...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-11-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202102674 |
| _version_ | 1828143953796399104 |
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| author | Meng Wang Ying Song Hari Krishna Bisoyi Jian‐Feng Yang Li Liu Hong Yang Quan Li |
| author_facet | Meng Wang Ying Song Hari Krishna Bisoyi Jian‐Feng Yang Li Liu Hong Yang Quan Li |
| author_sort | Meng Wang |
| collection | DOAJ |
| description | Abstract With the advantage of reversible shape‐morphing between two different permanent shapes under external stimuli, the two‐way shape‐memory aerogel is expected to become a preferred aerogel for developing practical applications in actuators, sensors, robotics, and more. Herein, the first two‐way shape‐memory liquid crystal elastomer (LCE)‐based aerogel is prepared by an orthogonal heat and light curing strategy coupled with an intermediate mechanical stretching step. The differential scanning calorimetry, temperature‐varied wide‐angle X‐ray scattering, and polarizing optical microscope results indicate that the aerogel possesses a liquid crystal phase and the insider mesogens are well‐oriented along the stretching direction. In addition to having superior compressibility and excellent shape stability, this LCE‐based aerogel can perform a reversible shape deformation during the heating/cooling cycles with a shrinkage ratio of 37%. The work, that is disclosed here, realizes a truly two‐way shape‐memory behavior rather than the one‐way shape deformation of traditional polymer aerogel materials, and may promote potential applications of this novel LCE‐based aerogel material in control devices, soft actuators, and beyond. |
| first_indexed | 2024-04-11T20:06:53Z |
| format | Article |
| id | doaj.art-42487761ec674be199026a9040174fbb |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-11T20:06:53Z |
| publishDate | 2021-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-42487761ec674be199026a9040174fbb2022-12-22T04:05:18ZengWileyAdvanced Science2198-38442021-11-01822n/an/a10.1002/advs.202102674A Liquid Crystal Elastomer‐Based Unprecedented Two‐Way Shape‐Memory AerogelMeng Wang0Ying Song1Hari Krishna Bisoyi2Jian‐Feng Yang3Li Liu4Hong Yang5Quan Li6Institute of Advanced Materials School of Chemistry and Chemical Engineering and Jiangsu Hi‐Tech Key Laboratory for Biomedical Research Southeast University Nanjing 211189 ChinaInstitute of Advanced Materials School of Chemistry and Chemical Engineering and Jiangsu Hi‐Tech Key Laboratory for Biomedical Research Southeast University Nanjing 211189 ChinaAdvanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State University Kent OH 44242 USAInstitute of Advanced Materials School of Chemistry and Chemical Engineering and Jiangsu Hi‐Tech Key Laboratory for Biomedical Research Southeast University Nanjing 211189 ChinaInstitute of Advanced Materials School of Chemistry and Chemical Engineering and Jiangsu Hi‐Tech Key Laboratory for Biomedical Research Southeast University Nanjing 211189 ChinaInstitute of Advanced Materials School of Chemistry and Chemical Engineering and Jiangsu Hi‐Tech Key Laboratory for Biomedical Research Southeast University Nanjing 211189 ChinaInstitute of Advanced Materials School of Chemistry and Chemical Engineering and Jiangsu Hi‐Tech Key Laboratory for Biomedical Research Southeast University Nanjing 211189 ChinaAbstract With the advantage of reversible shape‐morphing between two different permanent shapes under external stimuli, the two‐way shape‐memory aerogel is expected to become a preferred aerogel for developing practical applications in actuators, sensors, robotics, and more. Herein, the first two‐way shape‐memory liquid crystal elastomer (LCE)‐based aerogel is prepared by an orthogonal heat and light curing strategy coupled with an intermediate mechanical stretching step. The differential scanning calorimetry, temperature‐varied wide‐angle X‐ray scattering, and polarizing optical microscope results indicate that the aerogel possesses a liquid crystal phase and the insider mesogens are well‐oriented along the stretching direction. In addition to having superior compressibility and excellent shape stability, this LCE‐based aerogel can perform a reversible shape deformation during the heating/cooling cycles with a shrinkage ratio of 37%. The work, that is disclosed here, realizes a truly two‐way shape‐memory behavior rather than the one‐way shape deformation of traditional polymer aerogel materials, and may promote potential applications of this novel LCE‐based aerogel material in control devices, soft actuators, and beyond.https://doi.org/10.1002/advs.202102674aerogelsliquid crystal elastomersshape‐morphing materialstwo‐way shape‐memory aerogels |
| spellingShingle | Meng Wang Ying Song Hari Krishna Bisoyi Jian‐Feng Yang Li Liu Hong Yang Quan Li A Liquid Crystal Elastomer‐Based Unprecedented Two‐Way Shape‐Memory Aerogel Advanced Science aerogels liquid crystal elastomers shape‐morphing materials two‐way shape‐memory aerogels |
| title | A Liquid Crystal Elastomer‐Based Unprecedented Two‐Way Shape‐Memory Aerogel |
| title_full | A Liquid Crystal Elastomer‐Based Unprecedented Two‐Way Shape‐Memory Aerogel |
| title_fullStr | A Liquid Crystal Elastomer‐Based Unprecedented Two‐Way Shape‐Memory Aerogel |
| title_full_unstemmed | A Liquid Crystal Elastomer‐Based Unprecedented Two‐Way Shape‐Memory Aerogel |
| title_short | A Liquid Crystal Elastomer‐Based Unprecedented Two‐Way Shape‐Memory Aerogel |
| title_sort | liquid crystal elastomer based unprecedented two way shape memory aerogel |
| topic | aerogels liquid crystal elastomers shape‐morphing materials two‐way shape‐memory aerogels |
| url | https://doi.org/10.1002/advs.202102674 |
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