Electrorheological properties of poly(o-anisidine) and poly(o-anisidine)-coated silica suspensions

✍ Scribed by Noriyuki Kuramoto; Yoshimi Takahashi; Katsutoshi Nagai; Kiyohito Koyama

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 639 KB
• Volume: 30
• Category: Article
• ISSN: 1381-5148
• DOI: 10.1016/1381-5148(95)00127-1

✦ Synopsis

Poly(o-anisidine)

(PANS) and PANS-coated silica particles were prepared by oxidative polymerization of o-anisidine using ammonium persulphate in the absence and presence of silica particles, respectively. The entire surface of the silica particles was completely covered with PANS polymerized using low concentration of o-anisidine. The effects on the electrorheological behavior of surface modification of the silica particles coated with PANS were studied under oscillatory shear. Electrorheological properties of PANS and PANS-coated silica particle suspensions were found to exhibit higher performance in nonaqueous solutions than those of silica particle suspensions even at high temperatures.