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...
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Wiley
2021
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oai:doaj.org-article:42487761ec674be199026a9040174fbb2021-11-17T08:40:31ZA Liquid Crystal Elastomer‐Based Unprecedented Two‐Way Shape‐Memory Aerogel2198-384410.1002/advs.202102674https://doaj.org/article/42487761ec674be199026a9040174fbb2021-11-01T00:00:00Zhttps://doi.org/10.1002/advs.202102674https://doaj.org/toc/2198-3844Abstract 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.Meng WangYing SongHari Krishna BisoyiJian‐Feng YangLi LiuHong YangQuan LiWileyarticleaerogelsliquid crystal elastomersshape‐morphing materialstwo‐way shape‐memory aerogelsScienceQENAdvanced Science, Vol 8, Iss 22, Pp n/a-n/a (2021) |
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DOAJ |
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DOAJ |
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EN |
| topic |
aerogels liquid crystal elastomers shape‐morphing materials two‐way shape‐memory aerogels Science Q |
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aerogels liquid crystal elastomers shape‐morphing materials two‐way shape‐memory aerogels Science Q 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 |
| 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. |
| format |
article |
| 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 |
| title |
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_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_sort |
liquid crystal elastomer‐based unprecedented two‐way shape‐memory aerogel |
| publisher |
Wiley |
| publishDate |
2021 |
| url |
https://doaj.org/article/42487761ec674be199026a9040174fbb |
| work_keys_str_mv |
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| _version_ |
1718425667296559104 |