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- Title
Enhanced Electromechanical Property of Silicone Elastomer Composites Containing TiO 2 @SiO 2 Core-Shell Nano-Architectures.
- Authors
Gao, Shuyan; Zhao, Hang; Zhang, Na; Bai, Jinbo; Tercjak, Agnieszka
- Abstract
Dielectric elastomer (DE) is one type of promising field-activated electroactive polymer. However, its significant electromechanical actuated properties are always obtained under a giant electric voltage, which greatly restricts the potential applications of DE. In the present work, the well-constructed core-shell TiO2@SiO2 nanoparticles were fabricated by using the classical Stöber method. A series of TiO2@SiO2 nano-architectures-filled polydimethylsiloxane (PDMS) composites were prepared via solution blending and compression-molding procedures. Benefiting from the additional SiO2 shell, both the interfacial compatibility between fillers and matrix and core-shell interfacial interaction can be improved. The TiO2@SiO2/PDMS nanocomposites exhibit a significantly enhanced in-plane actuated strain of 6.08% under a low electric field of 30 V · μm−1 at 16 vol.% TiO2@SiO2 addition, which is 180% higher than that of neat PDMS. The experimental results reveal that the well-designed core-shell structure can play an important role in both improving the electromechanical actuated property and maintaining a good flexibility of DE composites. This research provides a promising approach for the design of the novel composites with advanced low-field actuated electromechanical property in next generation DE systems.
- Subjects
CONDUCTING polymers; ELASTOMERS; VOLTAGE; SILICONES; ELECTRIC fields; DIELECTRICS
- Publication
Polymers (20734360), 2021, Vol 13, Issue 3, p368
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym13030368