Coating of multiwalled carbon nanotubes with polymer nanospheres through microemulsion polymerization

Reddy, Kakarla Raghava; Sin, Byung Cheol; Yoo, Chi Ho; Sohn, Daewon; Lee, Youngil

doi:10.1016/j.jcis.2009.08.044

Cited by 147 publications

(55 citation statements)

References 29 publications

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“…3.5 The electrochemical behavior of K 3 Fe(CN) 6 in the mixed surfactants reverse microemulsion According to our research aforesaid, the reverse microemulsion containing two kinds of surfactant with a certain weight ratio has good conductivity. Accordingly, it can be used as electrolyte in electrochemical study.…”

Section: Influence Of the Temperature On The Conductivity Of Mixed Sumentioning

confidence: 97%

“…Accordingly, it can be used as electrolyte in electrochemical study. K 3 Fe(CN) 6 was selected as electrochemical probe and its electrochemical behavior in the reverse microemulsion was studied here. Figure 5 shows the cyclic voltammograms of K 3 Fe(CN) 6 in the mixed surfactants reverse microemulsion under different scan rates.…”

Section: Influence Of the Temperature On The Conductivity Of Mixed Sumentioning

confidence: 99%

“…K 3 Fe(CN) 6 was selected as electrochemical probe and its electrochemical behavior in the reverse microemulsion was studied here. Figure 5 shows the cyclic voltammograms of K 3 Fe(CN) 6 in the mixed surfactants reverse microemulsion under different scan rates. The results indicated that the redox peak potentials of Fe CN ð Þ 6 3À =Fe CN ð Þ 6 4À were almost constant with Fe CN ð Þ 6 4À at all scan rates were close to 1.…”

Section: Influence Of the Temperature On The Conductivity Of Mixed Sumentioning

confidence: 99%

“…It has received considerable attention since it can be widely used in oil recovery, nanoparticle synthesis, polymerization and organic catalysis [3][4][5][6][7][8]. However, due to the defect of its electrical conductivity, conventional reverse microemulsion cannot be used as electrolyte in electrochemistry research.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on conductivity of mixed surfactants reverse microemulsion

Zhou

Zhang

et al. 2010

J Appl Electrochem

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P-octyl polyethylene glycol phenyl ether (Triton X-100) and cetyltrimethylammonium bromide (CTAB) were mixed to be used as surfactant for preparing reverse microemulsion with n-hexane, n-hexanol and water. Effects of weight ratio of the two surfactants, temperature, concentrations of water and cosurfactant on the conductivity were studied. The results indicate that the conductivity of the mixed surfactants reverse microemulsion is greatly higher than that of the single surfactant system. The reverse microemulsion has been modified to be with good conductivity. The weight ratio of the two surfactants, temperature, concentrations of water and cosurfactant have obvious effects on the conductivity of the reverse microemulsion. Furthermore, the electrochemical behavior of potassium ferricyanide [K 3 Fe(CN) 6 ] in the mixed surfactants reverse microemulsion was investigated by cyclic voltammetry. The result shows that the redox processes of Fe CN ð Þ 6 3À =Fe CN ð Þ 6 4À present good reversibility and are controlled by diffusion in the system.

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Section: Influence Of the Temperature On The Conductivity Of Mixed Sumentioning

confidence: 97%

Section: Influence Of the Temperature On The Conductivity Of Mixed Sumentioning

confidence: 99%

Section: Influence Of the Temperature On The Conductivity Of Mixed Sumentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation on conductivity of mixed surfactants reverse microemulsion

Zhou

Zhang

et al. 2010

J Appl Electrochem

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“…The elaboration of hybrid materials is also of increasing interest, because the resulting materials most often possess properties which are superior to their individual components as compared to those of the individual polymers [8][9][10][11][12][13][14][15][16][17][18][19][20]. So, the hybrid of polyurethane-based dyes and polyacrylic dyes could achieve complementary advantages and overcome the shortcomings of each other.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and fluorescence properties of a waterborne polyurethane–acrylic hybrid polymeric dye

Ding

Liu

et al. 2016

Polym. Bull.

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A waterborne polyurethane-acrylic hybrid polymeric dye was prepared depending on soap-free emulsion polymerization method. The resulting polymeric dye composed of methyl methacrylate (MMA) monomer which was polymerized into polymethyl methacrylate (PMMA) as cores and waterborne polyurethane-based dye was synthesized by anchoring dye monomers (6-amino-2-cyclohexylbenz[de]isoquinone-1,3-dione) to polyurethane chains as shells. The average particle sizes of the hybrid polymeric dye emulsions were found to be increased with the increase in MMA contents for MMA monomers. Compared with dye monomers, the absorption intensities and fluorescence intensities of the hybrid polymeric dye were enhanced with the increase of particle sizes. This study revealed that enhanced fluorescence intensity of the hybrid polymeric dye was mainly attributed to the hindered formation of exciplexes among dye monomers and an augmented light absorption area. It was found that the fluorescence intensity of the hybrid polymeric dye was increased with increasing temperature and the trend first increased and then decreased with increase in concentration. Furthermore, the fluorescence of the hybrid polymeric dye emulsions was found to be very stable and not sensitive to the fluorescence quencher.

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Polyaniline Nanostructures

Ćirić‐Marjanović

2010

Nanostructured Conductive Polymers

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Polyaniline (PANI) is one of the most extensively studied conducting polymers because of its simple synthesis [1] and doping/dedoping chemistry [2], low cost, high conductivity, and excellent environmental stability. PANI has a wide applicability in rechargeable batteries [3], erasable optical information storage [4], shielding of electromagnetic interference [5], microwave-and radar-absorbing materials [6], sensors [7], indicators [8], catalysts [9], electronic and bioelectronic components [10], membranes [11], electrochemical capacitors [12], electrochromic devices [13], nonlinear optical [14] and light-emitting devices [15], electromechanical actuators [16], antistatic [17] and anticorrosion coatings [18]. Its electromagnetic and optical properties depend mostly on its oxidation state and degree of protonation [19]. The green emeraldine salt form of PANI is conducting ($1-10 S cm À1 for granular powders) [1]. It contains, depending on the synthetic route, variousunits (in the preceeding formulae B, Q and A À denote a benzenoid ring, quinonoid ring and dopant anion, respectively). The blue emer-The preparation of bulk quantities of conducting granular PANI is usually performed Nanostructured Conductive PolymersEdited by Ali Eftekhari by the oxidative polymerization of aniline with ammonium peroxydisulfate (APS) in an acidic aqueous solution (initial pH < 2.0) [1]. Colloidal PANI nanoparticles are prepared by dispersion polymerization of aniline in the presence of various colloidal stabilizers [20,21]. The average size of colloidal PANI nanoparticles decreases with increasing stabilizer/aniline ratio. PANI colloids often have nonspherical (rice grain, needle-like, etc.) core-shell morphology. The colloidal nanoparticle core most likely has a composite nature, i.e. it is composed of both the PANI and the incorporated stabilizer, while the shell is formed by the stabilizer. Nowadays, conducting PANI nanostructures are the focus of intense research owing to their significantly enhanced dispersibility and processability, and substantially improved performance in many applications, in comparison with granular and colloidal PANI [22][23][24][25][26][27]. The continuously growing interest in the study of zero-dimensional (0-D) (solid nanospheres), one-dimensional (1-D) (nanofibers (nanowires), nanorods (nanosticks), nanoneedles, rice-like nanostructures, nanotubes), two-dimensional (2-D) (nanoribbons (nanobelts), nanosheets (nanoplates, nanoflakes, nanodisks, leaf-like nanostructures), nanorings (cyclic nanostructures), net-like nanostructures), and three-dimensional (3-D) PANI nanostructures (hollow nanospheres, dendritic and polyhedral nanoparticles, flower-like, rhizoid-like, brain-like, urchin-like, and star-like nanostructures, etc.) has dramatically increased in recent years (Figure 2.1). The major focus of research has been the preparation, characterization, processing, and application of PANI nanofibers (PANI-NFs) and nanotubes (PANI-NTs). PANI-NFs are 1-D PANI nanoobjects of cylindrical profile with diameters ...

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Coating of multiwalled carbon nanotubes with polymer nanospheres through microemulsion polymerization

Cited by 147 publications

References 29 publications

Investigation on conductivity of mixed surfactants reverse microemulsion

Investigation on conductivity of mixed surfactants reverse microemulsion

Synthesis and fluorescence properties of a waterborne polyurethane–acrylic hybrid polymeric dye

Polyaniline Nanostructures

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