Study on electrorheological properties of novel polymer-Ce4+ complex

A new polymer containing bithiazole ring and p-aminobenzoic acid was first synthesized using 2,2 -diamino-4,4 - bithiazole with paraformaldehyde and p-aminobenzoic acid. The polymer –Ce4+ complex was prepared from the polymer and CeCl4 in DMSO. The electrorheological suspensions were prepared by the polymer-Ce4+ powder and bromodiphenylmethane. Under external electric field, the yield stress and dielectric constant of ER fluid were measured. The results showed that the polymer-Ce4+ complex ER fluid has higher dielectric properties, exhibits much stronger ER effect than pure the polymer under our experimental conditions. C 2006 Springer Science + Business Media, Inc.