Electrokinetic and electrorheological properties of poly(vinyl chloride)/polyindole conducting composites

Abstract

In this study, poly(vinyl chloride) (PVC), polyindole (PIN), and PVC/PIN conducting composites having five different compositions were used. Particle sizes, densities, dielectric constants, and sedimentation ratios of the materials were determined. The zeta‐potentials of the samples were measured in aqueous and nonaqueous (silicone oil [SO]) media. The dispersions prepared in SO were subjected to external electric field strength, and their electrorheological properties were investigated. Then the effects of dispersed particle volume fraction, shear rate, external electric field strength, frequency, and temperature onto electrorheological activities of the dispersions were examined. Further, creep and creep‐recovery tests were applied to the PIN/SO and PVC/PIN/SO dispersions, and reversible viscoelastic deformations were observed. Finally, the vibration damping capacity of PVC (66%)/PIN (34%)/SO dispersion system was tested by using an automobile shock absorber. Copyright © 2011 John Wiley & Sons, Ltd.

Emulsion‐polymerized polyindole nanoparticles and their electrorheology

“…This structural arrangement makes PIn and its derivatives of great interest in various applications . Methods for the synthesis of PIn include electrochemical, chemical oxidative, interfacial, and emulsion polymerization . However, few studies have examined the electrorheological measurements of polyindole.…”

“…However, few studies have examined the electrorheological measurements of polyindole. Unal et al . have investigated the electrorheological and viscoelastic properties of PIn and its composites.…”

Novel photoluminescence and optical investigation of poly(vinyl acetate)/polyindole composites synthesized via chromium chloride as oxidant

“…With this specific aim lot of researchers have made their contribution to the felid such as Sari et al reported synthesis, characterization, ER and creep-recovery properties of polyindole/polyethylene composites [10]. Koyuncu et al investigated the possibility of synthesizing a colloidally steady poly(vinyl chloride)/polyindole ER active composite system [11]. Tayalan et al prepared the conducting poly(vinyl chloride)/polyindole composites and freestanding films via chemical polymerization [12].…”

Electro-osmosis of electrorheological fluids

“…Motivated by the concerned intriguing physics as well as a possible plethora of applications, some electrokinetic properties of ERFs in the presence of surfactants have recently been discussed in the literature [57][58][59][60]. However, the problem of electro-osmosis of an ER fluid remains unaddressed.…”