Synthesis, electrorheology and creep behavior of polyindole/polyethylene composites

Sarı, Bekir; Yavas, Nihan; Makulogullari, Mehmet; Erol, Özlem; Ünal, Halíl Íbrahím

doi:10.1016/j.reactfunctpolym.2009.07.002

Cited by 40 publications

(23 citation statements)

References 44 publications

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“…Increasing anti‐sedimentation ratios were recorded with rising PIN content, decreasing hydrodynamic particle sizes, and apparent densities of the composites, which are in consistence with the Stock's law . Similar behaviors are reported for the PIN/polyethylene/SO suspension system in the literature . On the other hand, when the effect of dispersed phase volume fraction was considered, it was observed that anti‐sedimentation ratios of the PVC/PIN/SO dispersions were increased with increasing dispersed phase volume fraction because of the raising electrostatic repulsions (due to the electrostatic electrification) by increased number of dispersed particles.…”

Section: Resultssupporting

confidence: 84%

“…Linear η E≠0 increases were observed with increasing E 2 and volume fractions of the samples. When the volume fraction was increased from 5% to 25%, suspension's viscosity was increased from 43 to 785 Pa corresponding to a 98% electric field induced viscosity increment under E = 1.5 kV/mm, which may be attributed to the reduced flow properties of the particles because of F p as reported for PIN/PE/SO and polyaniline/SO suspension systems in the literature.…”

Section: Resultsmentioning

confidence: 56%

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

Koyuncu

Ünal

Gumus

et al. 2011

Polymers for Advanced Techs

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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.

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Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 56%

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

Koyuncu

Ünal

Gumus

et al. 2011

Polymers for Advanced Techs

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“…This suggests that rigid chain-like structures of the magnetic particles were formed under a magnetic field via dipole-dipole interactions, which results in solid-like properties [35,36]. The yield stresses obtained from a zero shear rate at 343 kA/m were 14 kPa for the pure CI suspension and 6 kPa for the CI/PGMA suspension, respectively.…”

Section: Resultsmentioning

confidence: 96%

Effect of surface treatment on magnetorheological characteristics of core-shell structured soft magnetic carbonyl iron particles

et al. 2015

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Core-shell structured soft magnetic carbonyl iron (CI) particles coated with poly(glycidyl methacrylate) were fabricated using a dispersion polymerization method. The surface of the CI particles was pretreated with 4-aminobenzoic acid to enhance the affinity between CI and poly(glycidyl methacrylate) (PGMA). The synthesized CI/PGMA coreshell particles were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and vibrating sample magnetometry. The CI/PGMA particles were dispersed into a nonmagnetic liquid for applications as a magnetorheological (MR) fluid, in which the rheological properties can be altered significantly by an external magnetic field. The MR suspension was analyzed using a rotational rheometer at various magnetic field strengths. Although the fabricated CI particles exhibited lower MR properties than pure CI particles, they showed improved dispersion stability according to the Turbiscan apparatus.

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“…These properties can be modified for specified applications. 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].…”

Section: Introductionmentioning

confidence: 99%

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

Bhagat

Dhokane

2015

Applied Surface Science

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Synthesis, electrorheology and creep behavior of polyindole/polyethylene composites

Cited by 40 publications

References 44 publications

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

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

Effect of surface treatment on magnetorheological characteristics of core-shell structured soft magnetic carbonyl iron particles

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

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