Abstract
Electrorheological characteristics of poly (dimethyl siloxane)(PDMS) networks containing camphorsulfonic acid (CSA) doped-polyaniline (PANI) particles were investigated. Samples were prepared by dispersing fine polyaniline particles into cross-linked PDMS. Rheological properties of the PANI/PDMS blends were studied in the oscillatory shear mode in order to study the effects of electric field strength, particle concentration, and operating temperature on their electromechanical responses. The electrostriction of the blends were observed as a result of an attractive force among polarized particles embedded in the network. The sensitivity values of blends are defined as the storage moduli at any applied electric field subtracted by those values at zero electric field, and divided by theb moduli at zero field. They were found to increase about 10-50% when electric field strength was increased from 0 to 2 kV/mm. The storage and loss moduli increased with particle concentration and temperature but they decreased with crosslink density of the matrices.
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