Electrorheological Response Behavior of PANI@MoS₂ Core–Shell Nanocomposites

Abstract

Electrorheological (ER) fluid, as an intelligent material, is a kind of suspension composed of polarized micro‐ and/or nanoparticles dispersed into insulating oil. In recent years, molybdenum disulfide (MoS2), as the hottest 2D material, has provided a new strategy to develop the high‐performance ER materials. 2D‐based ER composites can provide large surface to enhance the polarization. But the MoS2 ER material has many disadvantages such as low polarization strength and high electrical conductivity. To make up these defects, polyaniline (PANI) is used to combine with lamellar MoS2. Herein, PANI and MoS2 hybrid composite nanoparticles with special morphology are prepared by two‐step method. The coating material has special morphology, high interfacial polarization, specific surface area, and low density. The optimum reaction ratio is obtained by adjusting the proportion of MoS2 and PANI. When the proportion of PANI and MoS2 is 4:1, the material performance is best, in which the shear stresses can reach 150 Pa. In a word, it is proved that the material is an excellent electrorheological material.

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

“…The PDMS polymer with nanofillers exhibits good mechanical properties [58][59][60][61][62][63], which can be controlled by means of a nanofiller AI-dosing process. Other nanocomposite materials (PANI and molybdenum disulfide (MoS 2 ) hybrid composite, nanocomposite hydrogels, polymer-particle nanocomposites) are studied to im-prove the electrorheological, shape, and magnetic responses [64][65][66]. A possible evolution in the fabrication of advanced nanocomposite materials is in the AI control of the physical states of hybrid circuits (solid/liquid) for intelligent adaptive micro-robot implementations.…”

Recent Developments in the Use of Polyaniline-Based Materials for Electric and Magnetic Field Responsive Smart Fluids

“…Several methods have been applied to fabricate PAn/inorganic hybrid materials including insitu chemical oxidative polymerization, emulsion polymerization, microemulsion polymerization, and Pickering emulsion polymerization of PAn and PAn derivatives with the presence of inorganic material. As an inorganic part of the PAn/inorganic hybrid material, titanate [37,38], titania [39,40], TiO 2 [41][42][43], kaolinite [44], silica [14,[45][46][47], halloysite [48], sepiolite [49,50], Fe 2 O 3 [51,52], Fe 3 O 4 [53,54], palygorskite [55], BaTiO 3 [56][57][58], bentonite [59], montmorillonite [60][61][62], organoclay [63,64], organo-montmorillonite [65], laponite [66], mesoporous SiO 2 [67][68][69][70], mesoporous TiO 2 [71], anisotropic TiO 2 [72], attapulgite [73], nanoporous zeolite [74], metal-organic framework (MOF) [75], MoS 2 [76,77], WS 2 [78], K-feldspar…”

Polydimethylsiloxane-Based Polyurethane as the Matrix of Electrorheological Elastomers with an Adjustable Dielectric Constant and Improved Field-Active Efficiency

“…This causes the ERFs to undergo rapid transformation from a liquid to a solid due to the rapid increase in the shear stress and shear modulus of the ERFs . After the electric field is removed, the ERFs revert to a liquid state. − However, the settling of the dispersed phase particles during long-term use and leakage of the medium liquid can limit the wider industrial application of ERFs. Different from ERFs, the carrier medium of EREs is an elastomer rather than a liquid; therefore, the polarizable particles are confined within the solid elastomer matrix during the curing process.…”