Development and micro-gap flow evaluation of electro-rheological nano-suspensions

Katsufumi Tanaka, Takanobu Hira, Ryuichi Fukui, Haruki Kobayashi, Ryuichi Akiyama, Masami Nakano, Shouta Enami, Atsushi Totsuka

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Electro-rheological (ER) nano-suspensions based on titanium dioxide nano-particles with particle diameter on the order of 100 nm were prepared. Micro-gap flow behavior and microstructure were evaluated for the suspensions with a particle volume fraction of 8.8 vol%. For the nano-suspension based on a silicone oil, the ER effect and flow behavior were found to be stable during the sharing time on the order of 102 s. The ER response measured at a given strength of the electric field for the nano-suspension based on a chemically modified silicone oil was effectively induced by the electric field, especially with low strengths, and it was larger than that of the nano-suspension based on the silicone oil but slightly lower than that based on a hydrocarbon oil. Furthermore, the relaxation of the ER response after removal of the electric field was somewhat slow for the nano-suspension based on the hydrocarbon oil, whereas it was fairly well for the nano-suspension based on the modified silicone oil.

Original languageEnglish
Pages (from-to)1279-1286
Number of pages8
JournalColloid and Polymer Science
Volume291
Issue number5
DOIs
Publication statusPublished - 2013 May 1

Keywords

  • Electro-rheology
  • Micro-gap
  • Microstructure
  • Nano-particles
  • Yield stress

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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