Improved electrorheological effect in polyaniline nanocomposite suspensions

Yong Taik Lim, Jong Hyeok Park, O. Ok Park

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

We prepared polyaniline (PANI)/clay composites that are composed of both PANI-clay nanocomposite particles and pure PANI particles. The PANI-clay nanocomposite particles were made during the polymerization process, wherein PANI particles are attached on the surface of exfoliated clay particles modified by an aminosilane group. The PANI/clay composites were used as electrorheological fluids (ERFs) by dispersing them in silicon oil. The PANI-clay nanocomposite particles, which can form columnar structure under an electric field, strongly enhance the mechanical rigidity of the suspensions. The maximum yield stress of the PANI/clay composite suspensions (15 wt% in silicon oil) was 1.6 kPa at 3 kV/mm, while that of pure PANI was 300 Pa at the same electric field. A mechanism to explain the yield behaviors of the PANI-based nanocomposite suspensions is proposed.

Original languageEnglish
Pages (from-to)198-203
Number of pages6
JournalJournal of Colloid and Interface Science
Volume245
Issue number1
DOIs
Publication statusPublished - 2002 Jan 1

Fingerprint

Polyaniline
Nanocomposites
Suspensions
Clay
Silicon
Composite materials
Oils
Electric fields
polyaniline
Electrorheological fluids
clay
Rigidity
Yield stress
Polymerization

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

Cite this

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Improved electrorheological effect in polyaniline nanocomposite suspensions. / Lim, Yong Taik; Park, Jong Hyeok; Park, O. Ok.

In: Journal of Colloid and Interface Science, Vol. 245, No. 1, 01.01.2002, p. 198-203.

Research output: Contribution to journalArticle

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