Stretchable and Shape-Transformable Organohydrogel with Gallium Mesh Frame
Shape-memory materials are widely utilized in biomedical devices and tissue engineering, particularly for their ability to undergo predefined shape changes in response to external stimuli. In this study, a shape-transformable organohydrogel was developed by incorporating a gallium mesh into a polyac...
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MDPI AG
2024-11-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/10/12/769 |
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| author | Mincheol Lee Youngjin Choi Young Min Bae Seonghyeon Nam Kiyoung Shin |
| author_facet | Mincheol Lee Youngjin Choi Young Min Bae Seonghyeon Nam Kiyoung Shin |
| author_sort | Mincheol Lee |
| collection | DOAJ |
| description | Shape-memory materials are widely utilized in biomedical devices and tissue engineering, particularly for their ability to undergo predefined shape changes in response to external stimuli. In this study, a shape-transformable organohydrogel was developed by incorporating a gallium mesh into a polyacrylamide/alginate/glycerol matrix. The gallium mesh, which transitions between solid and liquid states at moderate temperatures (~29.8 °C), enhanced the hydrogel’s mechanical properties and enabled shape-memory functionality. The composite organohydrogel exhibited a high elastic modulus of ~900 kPa in the solid gallium state and ~30 kPa in the liquid gallium state, enabling reversible deformation and structural stability. Glycerol improved the hydrogel’s moisture retention, maintaining stretchability and repeated heating and cooling cycles. After multiple cycles of the shape-changing process, the organohydrogel retained its mechanical integrity, achieving shape-fixation and recovery ratios of ~96% and 95%, respectively. This combination of shape-memory functionality, stretchability, and mechanical stability makes this organohydrogel highly suitable for applications in flexible electronics, soft robotics, and biomedical devices, where adaptability and shape retention are essential. |
| format | Article |
| id | doaj-art-ab0d3c1d0d9c48a4a941d2cc271f64a5 |
| institution | OA Journals |
| issn | 2310-2861 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Gels |
| spelling | doaj-art-ab0d3c1d0d9c48a4a941d2cc271f64a52025-08-20T02:00:46ZengMDPI AGGels2310-28612024-11-01101276910.3390/gels10120769Stretchable and Shape-Transformable Organohydrogel with Gallium Mesh FrameMincheol Lee0Youngjin Choi1Young Min Bae2Seonghyeon Nam3Kiyoung Shin4Electro-Medical Equipment Research Division, Korea Electrotechnology Research Institute (KERI), Ansan 15588, Republic of KoreaElectro-Medical Equipment Research Division, Korea Electrotechnology Research Institute (KERI), Ansan 15588, Republic of KoreaElectro-Medical Equipment Research Division, Korea Electrotechnology Research Institute (KERI), Ansan 15588, Republic of KoreaSchool of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of KoreaElectro-Medical Equipment Research Division, Korea Electrotechnology Research Institute (KERI), Ansan 15588, Republic of KoreaShape-memory materials are widely utilized in biomedical devices and tissue engineering, particularly for their ability to undergo predefined shape changes in response to external stimuli. In this study, a shape-transformable organohydrogel was developed by incorporating a gallium mesh into a polyacrylamide/alginate/glycerol matrix. The gallium mesh, which transitions between solid and liquid states at moderate temperatures (~29.8 °C), enhanced the hydrogel’s mechanical properties and enabled shape-memory functionality. The composite organohydrogel exhibited a high elastic modulus of ~900 kPa in the solid gallium state and ~30 kPa in the liquid gallium state, enabling reversible deformation and structural stability. Glycerol improved the hydrogel’s moisture retention, maintaining stretchability and repeated heating and cooling cycles. After multiple cycles of the shape-changing process, the organohydrogel retained its mechanical integrity, achieving shape-fixation and recovery ratios of ~96% and 95%, respectively. This combination of shape-memory functionality, stretchability, and mechanical stability makes this organohydrogel highly suitable for applications in flexible electronics, soft robotics, and biomedical devices, where adaptability and shape retention are essential.https://www.mdpi.com/2310-2861/10/12/769stretchable hydrogelshape-transformable hydrogelliquid metalshape memory |
| spellingShingle | Mincheol Lee Youngjin Choi Young Min Bae Seonghyeon Nam Kiyoung Shin Stretchable and Shape-Transformable Organohydrogel with Gallium Mesh Frame Gels stretchable hydrogel shape-transformable hydrogel liquid metal shape memory |
| title | Stretchable and Shape-Transformable Organohydrogel with Gallium Mesh Frame |
| title_full | Stretchable and Shape-Transformable Organohydrogel with Gallium Mesh Frame |
| title_fullStr | Stretchable and Shape-Transformable Organohydrogel with Gallium Mesh Frame |
| title_full_unstemmed | Stretchable and Shape-Transformable Organohydrogel with Gallium Mesh Frame |
| title_short | Stretchable and Shape-Transformable Organohydrogel with Gallium Mesh Frame |
| title_sort | stretchable and shape transformable organohydrogel with gallium mesh frame |
| topic | stretchable hydrogel shape-transformable hydrogel liquid metal shape memory |
| url | https://www.mdpi.com/2310-2861/10/12/769 |
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