A new approach of enhancing the shear stress of electrorheological fluids of montmorillonite nanocomposite by emulsion intercalation of poly-N-methaniline

Lu, Jun; Zhao, Xiaopeng

doi:10.1016/j.jcis.2004.02.066

Cited by 45 publications

(20 citation statements)

References 44 publications

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“…The maximum electric field viscosity was observed as 468 Pas for K3, which contains the highest amount of PMMA. Similar trend was reported by Lu and Zhao [18] for polyaniline/montmorillonite composites.…”

Section: Effect Of Electric Field Strength On Shear Stress and Viscositysupporting

confidence: 90%

Preparation of Smart Fluid from Polymer Coated Pumice Particles

Yılmaz¹,

Çalışkan²,

Yilmaz³

2016

WJCMP

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This study reports, electrorheological (ER) responses of pumice and poly(methyl methacrylate)/ pumice, PMMA/pumice, conducting composite dispersions in silicone oil (SO). Primarily three different compounds (K1, K2, K3, 73%, 48%, 22% contain pumice particles) PMMA/pumice composites were prepared and used as ER active materials. Anti-sedimentation stabilities of pumice and composite systems in silicone oil (SO) medium were determined. The application of a suspension of composite particles as an electrorheological ER fluid (20% particle concentration) was assessed using a rotational electro-rheometer, and the effects of the electric field strength, shear rate, frequency and temperature were examined. ER activity of all the composite suspensions was observed to increase with increasing concentration, electric field strength and decreasing shear rate. The PMMA/pumice composites suspensions show a typical shear thinning non-Newtonian viscoelastic behavior, in which viscosity of the suspension decremented sharply with incrementing shear rate. The ER measurement results showed that the performance of the composite suspensions was enhanced by increasing the electric field strength.

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Section: Effect Of Electric Field Strength On Shear Stress and Viscositysupporting

confidence: 90%

Preparation of Smart Fluid from Polymer Coated Pumice Particles

Yılmaz¹,

Çalışkan²,

Yilmaz³

2016

WJCMP

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show abstract

“…[125][126][127][128] In a typical experiment, PANI was intercalated within the layer of clay via emulsion polymerization. 125,129,130 The XRD patterns of the interlayer spacing of the clay are represented in Figure 9, in which the PANI/clay nanocomposites were synthesized via an emulsion polymerization. The interlayer spacing, d 001 , is commonly determined from the XRD spectrum as an arbitrary intensity vs. 2θ.…”

Section: Introductionmentioning

confidence: 99%

Electrorheologically intelligent polyaniline and its composites

2010

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Electrorheological (ER) fluids are generally composed of electrically polarizable inorganic or organic particles dispersed in insulating oils. These materials are intelligent/smart materials in that they are capable of changing their state from liquid-like to solid-like very quickly under an applied electric field. This feature article reviews the literature regarding the fabrication of conducting polyaniline (PANI) and PANI composite particles, their ER performance, as well as their chemical and physical characteristics of morphology and crystal structure. The ER behavior of these intelligent materials was also analyzed using a range of rheological equations of state and their dielectric properties.

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“…Considerable improvement efforts have gone into the preparation of alternative suspended particles. These include semiconductive polymers [115][116][117][118], metal-or metal-oxide-doped titania or titanate [119][120][121][122], intercalated clay composites [123,124], organic-layer-modified titania or silica [125][126][127], mesoporous composites and nanocomposites, and still others [128][129][130]. A breakthrough has been achieved in recent years, with the discovery of the GER effect, which represents a different paradigm from the conventional ER mechanism, offering a GER yield stress value up to 300 kPa, which provides some potential realistic applications in various devices [131][132][133][134][135].…”

Section: Gerfmentioning

confidence: 99%

Manipulation of microfluidic droplets by electrorheological fluid

2009

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Microfluidics, especially droplet microfluidics, attracts more and more researchers from diverse fields, because it requires fewer materials and less time, produces less waste and has the potential of highly integrated and computer-controlled reaction processes for chemistry and biology. Electrorheological fluid, especially giant electrorheological fluid (GERF), which is considered as a kind of smart material, has been applied to the microfluidic systems to achieve active and precise control of fluid by electrical signal. In this review article, we will introduce recent results of microfluidic droplet manipulation, GERF and some pertinent achievements by introducing GERF into microfluidic system: digital generation, manipulation of "smart droplets" and droplet manipulation by GERF. Once it is combined with real-time detection, integrated chip with multiple functions can be realized.

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A new approach of enhancing the shear stress of electrorheological fluids of montmorillonite nanocomposite by emulsion intercalation of poly-N-methaniline

Cited by 45 publications

References 44 publications

Preparation of Smart Fluid from Polymer Coated Pumice Particles

Preparation of Smart Fluid from Polymer Coated Pumice Particles

Electrorheologically intelligent polyaniline and its composites

Manipulation of microfluidic droplets by electrorheological fluid

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