Electrorheology and creep-recovery behavior of conducting polythiophene/poly(oxymethylene)-blend suspensions


EROL Ö. , ÜNAL H. İ. , SARI B.

CHINESE JOURNAL OF POLYMER SCIENCE, vol.30, no.1, pp.16-25, 2012 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1007/s10118-012-1091-9
  • Title of Journal : CHINESE JOURNAL OF POLYMER SCIENCE
  • Page Numbers: pp.16-25

Abstract

Electrorheological properties and creep-recovery behavior of polythiophene/polyoxymethylene-blend having PT(50%)/POM(50%) composition were investigated. Particle size, conductivity and dielectric values were measured to be 24.77 mu m, 3.85 x 10(-5) S center dot m(-1) and 26.75, respectively. Sedimentation ratio was measured to be 64% at the end of 16 days. The effects of dispersed particle volume fraction, external electric field strength, shear rate, frequency and temperature on ER properties and storage modulus of PT/POM-blend/silicone oil (SO) suspensions were examined. Enhancement were observed in the electric field viscosities of the suspensions and thus they were classified as a smart material. Shear thinning non-Newtonian viscoelastic behavior was determined for PT/POM-blend/SO system. Further, time-dependent deformation was examined by creep-recovery tests and recoverable viscoelastic deformation established.