Discrete Dipole Moments and Enhanced Electro-Rheological Properties of Dumbbell-Shaped, Non-Spherical Particles
✍ Scribed by Kyomin Shin; Sunmi Lee; Jin-Joo Kim; Kyung-Do Suh
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 344 KB
- Volume
- 31
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
In this study, uniform dumbbell‐shaped non‐spherical particles are produced by seeded polymerization, and the electro‐rheological (ER) properties are compared to those of spherical‐shaped particles after surface coating with functionalized multiwall carbon nanotubes (f‐MWCNTs). The non‐spherical particles formed linear chains under an applied electric field. The yield stress of the non‐spherical particles is five‐times as high as that of the spherical particles. The enhanced ER properties of the dumbbell‐shaped non‐spherical particles are attributed to the discrete dipole moments, which are found to depend on the morphology.
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