Soft template synthesis and electrorheological characteristics of polypyrrole nanotubes
발표자
왕시조 (인하대학교)
연구책임자
권용구 (인하대학교)
초록
내용
Conducting polypyrrole (PPy) nanotubes were synthesized using methyl orange as a soft template. Then, their morphology, chemical and crystal structures, and thermal properties were studied. The PPy nanotubes were dispersed in silicone oil at a concentration of 5 vol% to examine their electrorheological (ER) properties. Testing results from controlled shear rate and controlled shear stress modes show that the flow curve can be fitted by the CCJ model. The dynamic and static yield stresses were 209.4 and 233.7 Pa, respectively, when an electric field strength of 3 kV/mm was applied. The yield stress versus electric field strength relationship exhibited a power-law relationship with a slope of 2.0. The dielectric properties of the ER fluid were studied and were shown to exhibit a good polarization response, resulting in a perfect ER response.