Preparation of π-conjugated truxene/silicone dielectric elastomers with large actuated strain at low electric field
| Autor: | Ming Zhang, Yi Yang Zhang, Lei Duan, Gen Lin Wang, Ke Hong Ding, Zhi Feng Wang |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Mechanical Engineering Dispersity Composite number 02 engineering and technology Dielectric 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Elastomer 01 natural sciences 0104 chemical sciences Dielectric elastomers chemistry.chemical_compound Silicone chemistry Mechanics of Materials Electric field General Materials Science Composite material 0210 nano-technology Elastic modulus |
| Zdroj: | Materials Letters. 169:157-159 |
| ISSN: | 0167-577X |
| Popis: | In this paper, we report an effective method for the preparation of polydimethyl siloxane (PDMS) containing only 0.5 wt % π-conjugated truxene micromolecule. The as-prepared truxene/PDMS composite had high dieletric constant (k) due to the regularly rigid structures, special π-conjugated structure and monodisperse nature of truxene, which can form a large no. of parallel micro-capacitors under actuated electric field. In addition, the elastic modulus of truxene/PDMS composite was increased slightly only with a good flexibility. As a result, compared to pure silicone elastomer (4.52%), the truxene/PDMS composite exhibited a greater strain of 11.56% at a low electric field of 5.5 V/μm (about 2.56 times increase). |
| Databáze: | OpenAIRE |
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