Electric fields in the rheology of disperse systems

Deinega, Yu. F.; Vinogradov, G. V.

doi:10.1007/bf01438804

Cited by 136 publications

(51 citation statements)

References 25 publications

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“…Many models have been proposed to explain the ER phenomenon (2,3,5,(11)(12)(13). These models are based on idealized systems and do not reproduce many important features of the surfactant-activated ER suspensions.…”

Section: Introductionmentioning

confidence: 99%

A Surfactant Bridge Model for the Nonlinear Electrorheological Effects of Surfactant-Activated ER Suspensions

Kim

2001

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

A Surfactant Bridge Model for the Nonlinear Electrorheological Effects of Surfactant-Activated ER Suspensions

Kim

2001

Journal of Colloid and Interface Science

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“…When a dielectric principle was first introduced by Klass and Martinek, 20,21 the polarization of particles was considered to be linked to the ER phenomenon. [20][21][22][23][24][25] Then, a water related electric double layer model was followed to interpret the ER mechanism for materials such as starch and limestone. Thus, water molecule in the hydrous ER materials becomes a critical factor for the ER effect.…”

Section: Introductionmentioning

confidence: 99%

Electrorheologically intelligent polyaniline and its composites

2010

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Electrorheological (ER) fluids are generally composed of electrically polarizable inorganic or organic particles dispersed in insulating oils. These materials are intelligent/smart materials in that they are capable of changing their state from liquid-like to solid-like very quickly under an applied electric field. This feature article reviews the literature regarding the fabrication of conducting polyaniline (PANI) and PANI composite particles, their ER performance, as well as their chemical and physical characteristics of morphology and crystal structure. The ER behavior of these intelligent materials was also analyzed using a range of rheological equations of state and their dielectric properties.

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“…Applications employing the electronically controlled, enhanced stress transfer capabilities of these suspensions are currently being developed. Discussions of applications and the present understanding of underlying phenomena can be found in recent reviews (Block and Kelly, 1988;Deinega and Vinogradov, 1984;Gast and Zukoski, 1989;Hartock et a/., 1991;Jordan and Shaw, 1989).…”

Section: Introductionmentioning

confidence: 99%

Simulation of the dynamic oscillatory response of electrorheological suspensions: Demonstration of a relaxation mechanism

Klingenberg¹

1993

Journal of Rheology

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SynopsisThe dynamic oscillatory response of electrorheological suspensions is investigated using a molecular dynamics-like simulation method, where suspensions are modeled as hard, monodisperse, neutrally buoyant, dielectric spheres contained in a dielectric, Newtonian fluid between parallel-plate electrodes. The response is described by frequency-dependent moduli, which display a significant relaxation due to competition between hydrodynamic and electrostatic forces on spheres within thick clusters. For small amplitude deformation of monodisperse suspensions, the direct electrostatic contribution to the response obeys time-electric field strength superposition analogous to time-temperature superposition in polymer rheology. The response for monodisperse suspensions is dominated by a single relaxation time, in contrast to the broad dispersions commonly observed. Possible explanations for this discrepancy are discussed.

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Electric fields in the rheology of disperse systems

Cited by 136 publications

References 25 publications

A Surfactant Bridge Model for the Nonlinear Electrorheological Effects of Surfactant-Activated ER Suspensions

A Surfactant Bridge Model for the Nonlinear Electrorheological Effects of Surfactant-Activated ER Suspensions

Electrorheologically intelligent polyaniline and its composites

Simulation of the dynamic oscillatory response of electrorheological suspensions: Demonstration of a relaxation mechanism

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