A Conduction Model of the Electrorheological Effect

Atten, P.; Foulc, Jean‐Numa; Félici, N.

doi:10.1142/s0217979294001093

Cited by 116 publications

(83 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The correlation between them is fitted by the equation t y /E m , where m equals 1.5. It agrees with the conduction model [34][35][36] which attributes the particle interaction to the conductivity mismatch between the particles and the liquid rather than dielectric effect of the particles. The conductivity of the PEDOT/PSS/PS particles is measured to be 10 À8 S Á cm À1 via a four-probe method.…”

Section: Resultssupporting

confidence: 85%

Core‐Shell Structured Monodisperse Poly(3,4‐Ethylenedioxythiophene)/Poly(Styrenesulfonic Acid) Coated Polystyrene Microspheres and Their Electrorheological Response

Liu¹,

Kim²,

Choi³

2011

Macromol. Rapid Commun.

View full text Add to dashboard Cite

We report the successful synthesis of transparent thin film of conducting poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonic acid) (PEDOT/PSS) coated monodisperse polystyrene (PS) microspheres via a simple physical adsorption route in an aqueous media and their electrorheological (ER) application under an applied electric field. Due to the insulating PS core, the PEDOT/PSS wrapped PS (PEDOT/PSS/PS) particles possess a low volume conductivity appropriately applied as ER active materials. Tested by a rotational rheometer under an applied electric field, the PEDOT/PSS/PS based ER fluid dispersed in a silicone oil shows a typical Bingham-fluid behavior with increased yield stresses according to the increase of electric field strength.

show abstract

Section: Resultssupporting

confidence: 85%

Core‐Shell Structured Monodisperse Poly(3,4‐Ethylenedioxythiophene)/Poly(Styrenesulfonic Acid) Coated Polystyrene Microspheres and Their Electrorheological Response

Liu¹,

Kim²,

Choi³

2011

Macromol. Rapid Commun.

View full text Add to dashboard Cite

show abstract

“…s dyn is estimated by extrapolating the plateau region in the flow curves as shown in Figure 4 a. The yield stress, originating from the attractive forces between particles, is described either by the polarization model [8] or the conduction model, [36,37] and predict that the attractive force in E 2 dependence for s dyn . The conduction model does not incorporate the flow effect.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Electrorheology of Semiconducting Poly(naphthalene quinone) Radical Particles

Sohn

Cho

Choi³

2002

Macromol. Chem. Phys.

View full text Add to dashboard Cite

“…The PTAA/acrylonitrile-butadiene rubber mixtrures were prepared by the mechanical blending of doped and undoped synthesized polythiophene at various particle volume concentrations (5,10,15,20, and 30% vol/vol) into the acrylonitrile-butadiene rubber. The solutions were magnetically stirred for ~24 hr at 27°C.…”

Section: Preparation Of the Ptaa/acrylonitrile-butadiene Rubber Blendsmentioning

confidence: 99%

“…P3TAA/NBR1 blends at various P3TAA particle concentrations (5,10,15,20, and 30% vol/vol) were investigated at electric field strengths between 0 and 2 kV/mm. Figure 3b shows the storage modulus (ΔG′) of each polymer blend system, which generally increases with increasing electric field strength: ΔG′ ∝ E α , α of each blend system is 0.25, 0.33, 0.33, 0.35, and 0.49 for the particle concentrations of 5, 10, 15, 20, and 30% vol/vol, respectively.…”

Section: Effect Of Particle Concentrationmentioning

confidence: 99%

“…The deviation from the quadratic dependence on electric field at low concentration is because the distances between particles are too large to create a significant particle interaction [21] and the fact that the model is based on the center-to-center distance between the adjacent spheres [19]. At high concentrations, the deviation might also result from the nonlinear conduction proposed by Atten et al (1994) [20], and the steric hindrance [21]. They suggested that the electric field between particles can become so large that the dielectric breakdown strength of the continuous phase is exceeded.…”

Section: Effect Of Particle Concentrationmentioning

confidence: 99%

See 1 more Smart Citation

Electromechanical responses of poly(3-thiopheneacetic acid)/acrylonitrile-butadiene rubbers

Thipdech¹,

Kunanuruksapong²,

Sirivat³

2008

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Acrylonitrile-butadiene rubber (NBR) and blends of poly(3-thiopheneacetic acid)/ acrylonitrile-butadiene rubber, P3TAA/NBR, were fabricated, and the electrorheological properties, dielectric, and electrical conductivities were investigated . The electrorheological properties were determined under an oscillatory shear mode in a frequency range of 0.1 to 100 rad/s at various electric field strengths, from 0 to 2 kV/mm, at a fixed 27°C to observe the effects of acrylonitrile content (ACN) in the rubber systems and the conductive particle concentration in the blends. For the pure rubber systems, the storage modulus response (ΔG′) is linearly dependent on its dielectric constant (ε′), and increases with the ACN content. For the NBR/P3TAA blends, the storage modulus response varies nonlinearly with the dielectric constant. The bending responses of the rubbers and the blends were investigated in a vertical cantilever fixture. For the pure rubber system, the bending angle and the dielectrophoresis force vary linearly with electric field strength. For the blend system, the bending angle and the dielectrophoresis force vary nonlinearly with electric field strength.Keywords : smart polymers, electrorheological properties, dielectric properties, acrylonitrile-butadiene rubber, poly(3-thiopheneacetic acid) eXPRESS Polymer Letters Vol.2, No.12 (2008) [866][867][868][869][870][871][872][873][874][875][876][877] Available online at www.expresspolymlett.com DOI: 10.3144/expresspolymlett.2008.101 The presence of fillers, such as electrically conductive additives, in elastomers has been observed to change their electrical, dielectric, and mechanical properties, along with their morphology [3,5,6]. The incorporation of the conductive materials into dielectric elastomers has been widely studied as both magnetorheological (MR) and electrorheological (ER) fluids. Lokander and Stenberg (2003) studied the MR properties of NBR having different acrylonitrile amount as well as blends of NBR with iron particles [7]. Dynamic mechanical properties, under the influence of an electric field, of doped poly(3-hexylthiophene), P3HT, blended with a silicone elastomer have also been investigated [8]. Shiga (1997) reported the ER effect of polymethacrylic acid cobalt(II) salt (PMACo) particles in silicone gel; increase in the elastic modulus induced by an electric field was 4 kPa, with a particle volume fraction of more than 25%. As the particles were incorporated into the rubber matrix, interaction between the particles occurred under an electric field [9]. In our previous work, various matrix systems were used to investigate the electrorheological (ER) properties, with emphasis on the effects of electric field strength, particle concentration, and operating temperature. The systems were poly(dimethyl siloxane) (PDMS) networks containing camphorsulfonic acid (CSA)-doped polyaniline (PANI) particles [10]. The ER properties of PDMS gel and PPV/PDMS blends were studied for the effect of particle electrical conductivity [11]. The ER p...

show abstract

A Conduction Model of the Electrorheological Effect

Cited by 116 publications

References 0 publications

Core‐Shell Structured Monodisperse Poly(3,4‐Ethylenedioxythiophene)/Poly(Styrenesulfonic Acid) Coated Polystyrene Microspheres and Their Electrorheological Response

Core‐Shell Structured Monodisperse Poly(3,4‐Ethylenedioxythiophene)/Poly(Styrenesulfonic Acid) Coated Polystyrene Microspheres and Their Electrorheological Response

Synthesis and Electrorheology of Semiconducting Poly(naphthalene quinone) Radical Particles

Electromechanical responses of poly(3-thiopheneacetic acid)/acrylonitrile-butadiene rubbers

Contact Info

Product

Resources

About