Journal of the Korean Magnetics Society (한국자기학회지)

The Korean Magnetics Society (한국자기학회)
권호 표지

RHEOLOGICAL PROPERTIES OF MAGNETIC PARTICLE SUSPENSIONS

  • Kwon, T.M. (Kolon Inc) ;
  • Choi, H.J. (Dept. of Polymer Science and Engineering, Inha University) ;
  • Jhon, M.S. (Dept. of Chemical Engineering, Carnegie Mellon University)
  • Published : 1995.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

The viscometric technique is used to study the effects of microstructure on the viscosity (viscosity vs. concentration or shear rate) of magnetic particle suspensions. In this characterization, measurement of suspension viscosity is used to obtain the dependence of viscous energy dissipation on microstructural state of dispersions. Microstructural shape effects which are related to particle orientation are then indirectly obtained. Empirical formulas from mean field theory and the Mooney equation, which are applicable at high concentration of magnetic particles, are used to relate viscosity to particle concentration. The validity and physical meaning of these equations are discussed.

Keywords

References

  1. Collids and Surfaces A:Physicochemical and Engineering Aspects v.80 no.1 Ferro/Electro Fluids and Magnetic Particle Suspensions T.E.Karis;M.S.Jhon;(eds.)
  2. J. Colloid Interface Sci. v.72 T.L.Smith;C.A.Bruce
  3. J. Appl. Polym. Sci v.25 W.Nagashiro;T.Tsunoda
  4. IEEE Trans. Magn. Mag. v.23 P.N.Kuin
  5. J. Mag. Soc. v.15 no.S2 T.M.Kwon;M.S.Jhon;T.E.Karis
  6. Colloids and Surfaces v.80 T.M.Kwon;M.S.Jhon;H.J.Choi;T.E.Karis
  7. An Introduction to Rheology H.A.Barnes;J.F.Hutton;W.Walter
  8. Trans. Soc. Rheol. v.12 R.J.Farris
  9. Trans. Soc. Rheol. v.3 I.M.Krieger;T.J.Dougherty
  10. J. Colloid Sci. v.6 M.Mooney
  11. IEEE Trans. Magn. Mag. v.26 P.C.Scholten;J.A.P.Felius;C.Slob
  12. IEEE Trans. Magn. Mag. v.23 D.E.Speliotis
  13. Ph.D. Thesis, Carnegie Mellon University Light Scattering Studies of Magnetic Particle Dispersions E.R.V.Keuren
  14. J. Paint Technical v.44 T.L.Smith