Electrorheological Effect of Conductive Polymers Dispersed in Liquid Crystalline Matrix

Abstract

Hybrid electrorheological fluids comprising powdered conjugated polymers dispersed in solutions of a liquid crystalline polymer were prepared and studied. FeCl 3 doped poly(p-phenylene) and pyrolised polyacrylonitrile were chosen as the dispersed phase and poly(n-hexyl isocyanate) dissolved in xylene was used as the active liquid matrix. All the component materials were extensively characterized by various methods. Flow curves of the hybrid ER fluids were recorded under electric field and compared with analogous curves obtained for dispersions of the powders in silicone oil and with homogeneous solutions of the LC polymer in xylene. A very significant enhancement of the ER effect in the studied hybrid fluids was observed.

Epoxy nanocomposites filled with thermotropic liquid crystalline epoxy grafted graphene oxide

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The effect of microparticles/nanoparticles surface modification on the magnetorheological fluid properties: A review

“…One of the most important aspects of these effects is reversibility; meaning that these effects can be easily controlled by changing the environmental conditions. Examples of smart materials are piezoelectric (Hong et al, 2003), thermoelectric (Kabir et al, 2014), photochemical (Wang et al, 2009), fluorescent, phosphorescent, fiber-optic devices (Zhao, 1998), electromechanical microcomputers, memory alloys (Mavroidis, 2002; Waldauer et al, 2012), conductive polymers (Ciszewska and Plocharski, 2005), as well as smart fluids (Morillas and de Vicente, 2020; Wereley, 2013).…”