Comment on "Transient overshoot of the electrorheological responses of conducting polymer-coated polyethylene suspensions in mineral oil"
被引:8
作者:
Hong, Cheng Hai
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机构:
Inha Univ, Dept Polymer Sci & Engn, Inchon 402751, South KoreaInha Univ, Dept Polymer Sci & Engn, Inchon 402751, South Korea
Hong, Cheng Hai
[1
]
Choi, Hyoung Jin
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机构:
Inha Univ, Dept Polymer Sci & Engn, Inchon 402751, South KoreaInha Univ, Dept Polymer Sci & Engn, Inchon 402751, South Korea
Choi, Hyoung Jin
[1
]
Seo, Yongsok
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Seoul Natl Univ, Intellectual Text Syst Res Ctr, Seoul 151744, South Korea
Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South KoreaInha Univ, Dept Polymer Sci & Engn, Inchon 402751, South Korea
Seo, Yongsok
[2
,3
]
机构:
[1] Inha Univ, Dept Polymer Sci & Engn, Inchon 402751, South Korea
[2] Seoul Natl Univ, Intellectual Text Syst Res Ctr, Seoul 151744, South Korea
[3] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea
We comment on both flow behavior (shear stress vs. shear rate) and universal yield stress equation of electrorheological (ER) suspensions of recently reported conducting polypyrrole (PPy)-coated polyethylene (PE) under applied electric strengths. Our proposed Cho-Choi-Jhon (CCJ) shear stress model not only fits flow curves for the PPy-coated PE ER fluid, but also provides a better explanation on their flow properties compared to De Kee-Turcotte model. Moreover, using the deduced critical electric field strength and additional scaled parameter, we find that the universal yield stress equation proposed collapses the data of double-coated PE onto a single curve. (C) 2007 Elsevier B.V. All rights reserved.