Abstract
A nanocomposite material, which consists of polyaniline (PANI) and inorganic Na +-montmorillonite (MMT), was synthesized via a microemulsion polymerization method, in which the Na +-MMT was forced to be swollen, following insertion of a mixture of aniline monomer, sodium lauryl sulfate and pentanol under sonication into its gallery. The d-spacing of the PANI/Na +-MMT nanocomposite was found to become wider about 2.3 Å than that of the pure Na +-MMT particles, due to the successful intercalation of PANI into Na +-MMT layers. The electrorheological (ER) fluid based on the fabricated PANI/Na +-MMT nanocomposite was prepared by dispersing the particles in insulating silicone oil. Dynamic mechanical properties of the ER fluid were investigated via an oscillatory test using a vertical oscillation rheometer.
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