Emulsion polymerized polyaniline synthesized with dodecylbenzene-sulfonic acid and its electrorheological characteristics: Temperature effect

Kim, Seong Gi; Lim, Jae Yol; Sung, Jang Hyun; Choi, Hyoung Jin; Seo, Yongsok

doi:10.1016/j.polymer.2007.09.013

Cited by 137 publications

(92 citation statements)

References 55 publications

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“…The second method is the preparation of PANI-based nano materials with proper forms [4,[12][13][14] for the nanoparticle-based ER fluids served as giant ER fluids which exhibit extremely high yield strength though its large off-field viscosity and shear stability still need to be improved [4,[12][13][14][15]. The third one concerns the doping and dedoping process of PANI for ER application; functional organic acids especially organic sulfonic acids have shown to be of help for the improvement of the ER performance of PANI-based materials [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Electrorheological performances of poly(o-toluidine) and p-toluenesulfonic acid doped poly(o-toluidine) suspensions

et al. 2015

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Poly(o-toluidine) (POT) and p-toluenesulfonic acid doped poly(o-toluidine) (TSA-POT) were synthesized via chemical oxidation and emulsion polymerization, respectively. The rheological measurements of the dedoped POT and TSA-POT silicone oil suspensions showed that both of the suspensions exhibited electrorheological (ER) effect under electric field. The analyses of the rheological curves of suspension indicated that POT and TSA-POT suspensions presented different flow behaviors. POT suspensions presented fast polarization under external electric field with the existence of critical shear rates (γ crit ), and POT suspensions behaved well with Bingham model above γ crit TSA-POT suspension behaved very well with Cho-Choi-Jhon model in all shear rate regions. Both of static and dynamic yield stresses for POT and TSA-POT suspensions in electric field were proportional to the square of electric field strength. The different ER performances between POT and TSA-POT suspensions were explained based on the conductivity and dielectric constant of the particles. The modification of conductivity and dielectric constant by doping POT with TSA improved the ER performance of TSA-POT suspension.

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Section: Introductionmentioning

confidence: 99%

Electrorheological performances of poly(o-toluidine) and p-toluenesulfonic acid doped poly(o-toluidine) suspensions

et al. 2015

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“…Liu et al 11 synthesized coreshell structured semiconducting PMMA/PANI snowmanlike particles and examined their electrorheological characteristics under an applied electric field. Kim et al 12 synthesized dodecylbenzene sulfonic acid doped PANI particles by emulsion polymerization and studied the electrorheological properties of dodecylbenzene sulfonic acid doped PANI particles dispersed in silicone oil under different operating temperatures and an applied electric field.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of poly(methyl methacrylate–butyl acrylate–acrylic acid)/polyaniline core–shell nanoparticles in miniemulsion media

Shi

Sun

2011

J of Applied Polymer Sci

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Conductive polymer particles, polyaniline (PANI)‐coated poly(methyl methacrylate–butyl acrylate–acrylic acid) [P(MMA–BA–AA)] nanoparticles, were prepared. The P(MMA–BA–AA)/PANI core–shell complex particles were synthesized with a two‐step miniemulsion polymerization method with P(MMA–BA–AA) as the core and PANI as the shell. The first step was to prepare the P(MMA–BA–AA) latex particles as the core via miniemulsion polymerization and then to prepare the P(MMA–BA–AA)/PANI core–shell particles. The aniline monomer was added to the mixture of water and core nanoparticles. The aniline monomer could be attracted near the outer surface of the core particles. The polymerization of aniline was started under the action of ammonium persulfate (APS). The final product was the desired core–shell nanoparticles. The morphology of the P(MMA–BA–AA) and P(MMA–BA–AA)/PANI particles was characterized with transmission electron microscopy. The core–shell structure of the P(MMA–BA–AA)/PANI composites was further determined by Fourier transform spectroscopy and ultraviolet–visible measurements. The conductive flakes made from the core–shell latexes were prepared, and the electrical conductivities of the flakes were studied. The highest conductivity of the P(MMA–BA–AA)/PANI pellets was 2.05 S/cm. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

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“…This test was performed in oscillatory mode using a strain sweep at 0.01-10% stain amplitude and constant frequency of 10 rad/s at 25° C. Figure 6 illustrates the dependence of complex viscosity on the strain amplitude. The suspension containing silica particles displayed low viscosity, which did not depend on the applied strain.. [45], which also increased as the shear rate increases. This value is very high, as compared with other systems based on silica particles containing confined phosphonium-based ionic liquid [26][27].…”

Section: Rheological Behaviour Of the Particle Suspensionsmentioning

confidence: 93%

Ionic liquid-based organically modified silica for the development of new electrorheological fluids

Marins

Soares

2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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To cite this version:Jéssica Alves Marins, Bluma Soares. Ionic liquid-based organically modified silica for the development of new electrorheological fluids. Colloids The presence of the silylated ionic liquid covalently attached to the silica particles was confirmed by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The effect of the amount of imidazolium-based ionic liquid immobilized on the spherical silica particles on the electrorheological (ER) behavior of the corresponding suspensions in silicone oil was investigated. A significant ER effect was observed for the fluid containing silica modified with around 10%wt. of IL-TMOS. In fact, a very good, extremely rapid and reversible response under the action of an electric field at intensity to 4 kV/mm was achieved, with shear stress value as high as 2200 Pa. The dielectric properties were also evaluated to explain the ER response of these IL-ORMOSIL particles

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Emulsion polymerized polyaniline synthesized with dodecylbenzene-sulfonic acid and its electrorheological characteristics: Temperature effect

Cited by 137 publications

References 55 publications

Electrorheological performances of poly(o-toluidine) and p-toluenesulfonic acid doped poly(o-toluidine) suspensions

Electrorheological performances of poly(o-toluidine) and p-toluenesulfonic acid doped poly(o-toluidine) suspensions

Synthesis and characterization of poly(methyl methacrylate–butyl acrylate–acrylic acid)/polyaniline core–shell nanoparticles in miniemulsion media

Ionic liquid-based organically modified silica for the development of new electrorheological fluids

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