Synthesis, characterization and electrorheological properties of polyindene/kaolinite composites


Eristi C., Yavuz M., Yilmaz H., Sarı B., Ünal H. İ.

Journal of Macromolecular Science, Part A: Pure and Applied Chemistry, vol.44, no.7, pp.759-767, 2007 (SCI-Expanded) identifier

Abstract

In this study, synthesis, characterization and electrorheological (ER) properties of polyindene (PIN) and polyindene/kaolinite composites were carried out by cationic radical polymerization using FeCl3 as the oxidizing agent. The homopolymer and composites, containing different amounts of PIN were characterized by FTIR spectroscopy, thermo-gravimetric (TGA) analyses, scanning electron microscopy (SEM) and dynamic light scattering (DLS) methods. The conductivity and dielectric properties of PIN and PIN/kaolinite composites were determined. Suspensions of PIN and PIN/kaolinite composites were prepared in silicone oil (SO), at a series of concentrations (c=5-25m/m %). The effects of concentration, shear rate, electric field strength, frequency, temperature and promoter on ER activities of suspensions were investigated.