Trembling Shear Behavior of a Modified-Chitosan Dispersed Suspension under an Electric Field and its Model Study
✍ Scribed by Young Gun Ko; Ung Su Choi; Yong Jin Chun
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 508 KB
- Volume
- 209
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
An electro‐rheological (ER) fluid showing trembling shear behavior was fabricated with chitosan particles that had benzene, amine and azo‐pendent side groups. This modified‐chitosan dispersed suspension showed four regions in a plot of shear stress against shear rate at high electric field. We analyzed this specific behavior with our suggested model. The model was developed with the spring‐damper model. Our suggested model equation treated the wide range of shear rate and specific behaviors of shear stress in ER fluids. In this study, we successfully obtained various ER fluids showing different behaviors just by changing the side functional groups of the particles in the ER fluids. All of the curves of the shear stress plotted against shear rate were fitted well by our spring‐damper model.
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