Improved Electrorheological Effect in Polyaniline Nanocomposite Suspensions

Lim, Yong Taik; Park, Jae Hyung; Park, O Ok

doi:10.1006/jcis.2001.7983

Cited by 69 publications

(45 citation statements)

References 15 publications

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“…Although the synthesis of composite materials consisting of various polymers and exfoliated clay platelets is well developed, the control of the organization of the clay platelets at larger scales in order to extend the range of available morphologies has been much less investigated and is of significant challenge. Recent work in this direction has shown that the formation of, for instance, clay nanowalls, [14] columnar structures, [15] or 3D networks [16] can be useful not only for advanced materials but also for obtaining nanosensors and nanodevices such as filters or membranes.…”

Section: Introductionmentioning

confidence: 99%

Polymer/Laponite Composite Latexes: Particle Morphology, Film Microstructure, and Properties

Negrete-Herrera¹,

Putaux²,

David³

et al. 2007

Macromol. Rapid Commun.

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Transparent film materials with excellent mechanical and thermal properties were elaborated by drying a latex suspension of armored polymer/Laponite composite particles. Low‐temperature TEM observation of ultrathin cross‐sections of the films indicated a unique network morphology characterized by a “honeycomb” distribution of the Laponite platelets remindful of the original particles morphology.magnified image

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Section: Introductionmentioning

confidence: 99%

Polymer/Laponite Composite Latexes: Particle Morphology, Film Microstructure, and Properties

Negrete-Herrera¹,

Putaux²,

David³

et al. 2007

Macromol. Rapid Commun.

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“…[14][15][16][17][18][19] Apart from the properties mentioned above, conducting polymers are useful as magneto/ electrorheological ͑ER͒ materials/fluids. [20][21][22][23] ER fluids is a class of materials whose rheological characteristics are controllable through the application of an electric field. ER fluids are usually made of particle suspensions with a large dielectric constant mismatch between the particles and the fluid.…”

mentioning

confidence: 99%

Organically Soluble Bifunctional Polyaniline–Magnetite Composites for Sensing and Supercapacitor Applications

Radhakrishnan

Prakash

Rao

et al. 2009

Electrochem. Solid-State Lett.

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Conducting polymers ͑CPs͒ now own a special status in the field of electroactive materials, especially after the pioneering and noble prize winning work by Shirakawa et al.1 A great deal of progress has been made on these synthetic metals in terms of their synthesis, processability, and device applications.2-4 Particular attention on polyaniline ͑PAni͒ has been given due to its environmental stability, thin-film-forming property with tunable conductivity and commercial viability. Polyanilines have been studied extensively due to their applications to practical devices for energy storage, electrochemical sensors, electrochromic devices, electromagnetic interference shielding, and corrosion protection.3-10 Application of the CPs in energy storage devices is also well known, 11 and recent studies 12 in this area gave impetus to fundamental and applied research on CPbased materials. Recent literature 13 identified the polyaniline composite materials as potential electrochemical sensors for various biomolecules.Applications of conducting polymers are broadened by compositing with other inorganic materials. For example, polyaniline-metal nanoparticle composites exhibit enhanced sensing and catalytic properties, compared to pure polyaniline. [14][15][16][17][18][19] Apart from the properties mentioned above, conducting polymers are useful as magneto/ electrorheological ͑ER͒ materials/fluids. 20-23 ER fluids is a class of materials whose rheological characteristics are controllable through the application of an electric field. ER fluids are usually made of particle suspensions with a large dielectric constant mismatch between the particles and the fluid. Because of the controllable rheological properties, ER fluids can potentially be used as a smart material for active devices, which transform electric energy to mechanical energy. Polyaniline can change its property from a conducting to an insulating state using simple protonic acid treatment. This allows for a change in dielectric constant and conductivity of particles while keeping all other particle properties the same.In the present communication, we report the synthesis of organically soluble bifunctional polyaniline-magnetite composites, which can sense dopamine and also act as supercapacitor electrode material. The results are presented and discussed. ExperimentalMaterials and methods.-Analytical grade aniline monomer was purchased from Merck, India. Dodecylbenzene sulfonicacid ͑70 wt % solution in 2-propanol͒ ͑DBSA͒ was purchased from Aldrich Chemical Company. Other characterization methods are similar to our earlier report. 12Synthesis of PAni-DBSA-Fe 3 O 4 nanocomposites.-Fe 3 O 4 magnetic particles were prepared by precipitation-oxidation method according to a known procedure, 24 according to which the size of the magnetite particles are in the range of 20-30 nm. PAni-magnetite composites were prepared by an in situ polymerization of aniline ͑1 mL͒ in DBSA ͑5 mL in 100 mL water͒ solution containing a specific amount of Fe 3 O 4 magnetic particles according to...

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“…This sort of process could be valuable for the PANI/clay nanocomposites manufacturing [56,57] As such, the PANI-clay nanocomposite particles, which can form columnar structure under an electric field, strongly enhance the mechanical rigidity of suspensions. [41] The maximum yield stress of the PANI/clay composite suspensions (15 wt.-% in silicon oil) was 1.6 KPa at 3 kV mm ±1 , while that of pure PANI was 300 Pa at the same electric field.…”

Section: Reviewsmentioning

confidence: 99%

Polymer Nanocomposites for Aerospace Applications: Properties

Njuguna¹,

2003

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Polymer nanocomposites may provide significantly increased modulus, gas barrier, thermal performance, atomic oxygen resistance, resistance to small molecule permeation and improved ablative performance when compared to typical traditional carbon‐fiber‐reinforced polymeric composites. This presentation gives a review on both theoretical and experimental investigations extracting valuable fundamental elements including field emission, thermal stability, and electrical, optical and mechanical properties of polymer nanocomposites for aerospace applicability.

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Improved Electrorheological Effect in Polyaniline Nanocomposite Suspensions

Cited by 69 publications

References 15 publications

Polymer/Laponite Composite Latexes: Particle Morphology, Film Microstructure, and Properties

Polymer/Laponite Composite Latexes: Particle Morphology, Film Microstructure, and Properties

Organically Soluble Bifunctional Polyaniline–Magnetite Composites for Sensing and Supercapacitor Applications

Polymer Nanocomposites for Aerospace Applications: Properties

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