Abstract
Synthetic morphing composites can change their shape actively in response to triggers and have great potential for applications as sensors, soft actuators, in robotics and biomedicine. In this study, graphene-reinforced chitosan/polydimethylsiloxane bi-layered morphing composites are developed, leveraging their differential coefficient of thermal expansion to enable different volume changes within each layer. UV photo-polymerisation/crosslinking serves to improve the bi-layer interface and prevent delamination during morphing. It is possible to design accurate patterned bi-layered structures with the aid of mask-less dynamic light photolithography (DLP). Upon activation by thermal triggers, the bi-layered composite achieves rapid, reversible and multi-repeatable morphing. A finite element model is developed to simulate the deflection of the sample due to anisotropic thermal expansion of the bi-layer. The model can predict the deflection of the bi-layered composite with a relative error of 3.3 % in comparison to experimental results.
Original language | English |
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Title of host publication | 21st International Conference on Composite Materials, ICCM 2017 |
Publication status | Published - 2017 |
Externally published | Yes |
Event | International Conference on Composite Materials 2017 - Xi'an, China Duration: 20 Aug 2017 → 25 Aug 2017 Conference number: 21st https://www.iccm-central.org/Proceedings/ICCM21proceedings/ (Proceedings) |
Conference
Conference | International Conference on Composite Materials 2017 |
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Abbreviated title | ICCM 2017 |
Country/Territory | China |
City | Xi'an |
Period | 20/08/17 → 25/08/17 |
Internet address |
Keywords
- Finite element analysis
- Graphene
- Morphing composite
- Thermal trigger