The electrorheological properties of polyaniline suspensions

https://doi.org/10.1016/0021-9797(90)90088-6Get rights and content

Abstract

The electrorheological properties of suspensions containing polyaniline particles in silicon oil are reported for a range of suspension volume fractions, applied field strengths, shear stresses, and particle dielectric constants. Suspension viscosity at a fixed stress is found to increase slowly as the field strength is raised to a value of E∗. Over a very narrow field strength range near E∗ the suspension viscosity is found to increase 106–108 Pa s. At field strengths greater than E∗, the suspensions take on solid-like behavior. The scaling of yield stress on volume fraction and field strength is similar to that reported on other systems and the yield stress is found to increase monotonically with particle dielectric constant.

References (37)

  • Z.P Shulman et al.

    J. Non-Newtonian Fluid Mech.

    (1981)
  • R de Surville et al.

    Electrochim. Acta

    (1968)
  • A.F Diaz et al.

    J. Electroanal. Chem.

    (1980)
  • T Kobayashi et al.

    J. Electroanal. Chem.

    (1984)
  • J.-C Chiang et al.

    Synth. Met.

    (1986)
  • H.H.S Javadi et al.

    Synth. Met.

    (1988)
  • M Nechtschein et al.

    Synth. Met.

    (1987)
  • M Ohira et al.

    Synth. Met.

    (1987)
  • W.M Winslow

    J. Appl. Phys.

    (1949)
  • D.L Klass et al.

    J. Appl. Phys.

    (1967)
  • Y.F Deinega et al.

    Heat Transfer-Sov. Res.

    (1978)
  • D.L Klass et al.

    J. Appl. Phys.

    (1967)
  • Y.F Deinega

    Inzh. Fiz. Zh.

    (1970)
  • H Uejima

    Japan J. Appl. Phys.

    (1972)
  • A.V Lykov et al.

    Inzh. Fiz. Zh.

    (1970)
  • L Marshall et al.

    J. Chem. Soc. Faraday Trans. 1

    (1989)
  • Klingenberg, D. J., and Zukoski, C. F., Langmuir, in...
  • A.A Trapeznikov et al.

    Kolloidn. Zh.

    (1981)
  • Cited by (194)

    • Advances of electrochromic and electro-rheological materials

      2020, Advanced Lightweight Multifunctional Materials
    • Highly uniform silica nanoparticles with finely controlled sizes for enhancement of electro-responsive smart fluids

      2019, Journal of Industrial and Engineering Chemistry
      Citation Excerpt :

      ER materials can be categorized into organic/polymeric materials, inorganic oxides and non-oxide inorganic materials. Organic/polymeric materials used for the ER fluids are divided into two categories; those that contain conjugated π bonds and those that contain highly polarizable groups such as hydroxyl, amino groups on their molecular chain [5–8]. Silicon dioxide, or silica (SiO2), and titanium dioxide, or titania (TiO2) are one of representative inorganic materials used for ER applications [9–12].

    • Influence of electric field and shear on the rheology of fumed alumina in silicone oil suspensions

      2016, Colloids and Surfaces A: Physicochemical and Engineering Aspects
    • Electrochemical and Physical properties of N-substituted arylmethylene pyrrole polymers and N-alkylmethine pyrrole copolymers

      2014, Electrochimica Acta
      Citation Excerpt :

      Pyrrole polymers have several potential applications which include batteries[1–3], as an anti-corrosion film [4–6], photoconductors [6,7], conducting polymers[1–3,8], electromagnetic shielding materials [9], membranes [10,11], ion-exchange chromatography resins [12], modified electrodes for enantioselective recognition [13], electrosynthesis [14–16], displays [17], biosensors [18–20], tissue engineering scaffolds [21], neural probes [22] and drug delivery devices [23].

    • Conductivity, polarization and electrorheological activity of polyaniline nanotubes during thermo-oxidative treatment

      2012, Polymer Degradation and Stability
      Citation Excerpt :

      In the past decades, semi-conducting polymers have received wide investigations due to their good ER efficiency and anhydrous character [3,4]. In particular, polyaniline (PANI) was frequently studied as one of the most promising semi-conducting polymer-based ER materials because of its simple preparation, low cost, good thermal stability, and controllable conductivity [5–8]. Various PANI-based ER materials have been developed, such as PANI copolymer [9], hollow PANI particles [10], core/shell structured PANI particles microspheres [11,12] PANI intercalated clay composites [13,14], PANI/mesoporous composites [15,16], and so on.

    View all citing articles on Scopus
    View full text