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Shape Memory Elastomers: A Review of Molecular Structures, Stimulus Mechanisms, and Emerging Applications
Yuan Yuan Yu1, Hong Ping Xiang1, Long Fei Fan2
1Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, 510006 Guangzhou, Guangdong, China.
Polymer Science & Technology (Washington, D.C.)
|June 8, 2026
Summary
Shape memory elastomers are smart polymers that recover their original shape when exposed to stimuli. This review covers their structures, mechanisms, and applications in fields like robotics and medical devices.
Area of Science:
- Polymer Science
- Materials Science
- Smart Materials
Background:
- Shape memory elastomers (SMEs) are smart polymers with the ability to return to their original shape after deformation when subjected to external stimuli.
- Their unique properties offer significant potential in diverse technological fields.
Purpose of the Study:
- To review recent advancements in shape memory elastomers and their composites.
- To explore their molecular structures, stimuli-responsive mechanisms, and emerging applications.
Main Methods:
- Discussion of molecular structures and shape memory effects.
- Explanation of working mechanisms based on various stimuli (heat, light, electricity, magnetic fields, solvents).
- Presentation of emerging applications and future outlook.
Main Results:
- SMEs exhibit shape recovery triggered by multiple stimuli.
- Key applications include artificial muscles, actuators, soft robots, smart electronics, and aerospace.
Conclusions:
- Shape memory elastomers demonstrate significant potential for innovation in various advanced fields.
- Further research is needed to address challenges and unlock full application potential.
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