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Shape Memory: An Efficient Method to Develop the Latent Photopatterned Morphology for Elastomer in Two/Three
1School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composite Materials, and Shanghai Key Lab of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dungchuan Road, Minhang, Shanghai, People's Republic of China.
ACS Macro Letters
|June 2, 2022
Summary
Shape memory behavior enables photopatterning of poly(styrene-block-butadiene-block-styrene) elastomers. This allows for reversible 2D/3D shape transformations through light and thermal stimuli.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Shape memory polymers (SMPs) offer dynamic shape-changing capabilities.
- Photopatterning allows for precise control over material surface morphology.
- Developing stimuli-responsive materials with tunable properties is crucial for advanced applications.
Purpose of the Study:
- To investigate the use of shape memory behavior for creating latent photopatterned morphologies.
- To functionalize poly(styrene-block-butadiene-block-styrene) (SBS) with anthracene for photo-responsiveness.
- To achieve 2D/3D shape transformations using photopatterning and shape memory effects.
Main Methods:
- Modification of SBS elastomer by attaching anthracene groups.
- Photopatterning via anthracene photodimerization on the deformed elastomer.
- Inducing shape transformations through thermal treatment and shape memory recovery.
- Investigating the reversibility of photoinduced patterns and shape conformations.
Main Results:
- Successfully developed latent photopatterned morphologies in 2D and 3D on modified SBS.
- Demonstrated 2D-2D and 2D-3D shape transformations triggered by thermal treatment.
- Confirmed the reversibility of anthracene dimerization, allowing for multiple cycles of pattern erasure and redevelopment.
- Achieved controlled shape transformations through the combination of photochemistry and shape memory effects.
Conclusions:
- Shape memory behavior is a viable strategy for creating photopatterned materials.
- The anthracene-modified SBS elastomer exhibits reversible photo-patterning and shape memory capabilities.
- This approach enables the development of dynamic and reconfigurable 2D/3D structures for advanced material applications.
