Simple synthesis of water-soluble conducting polyaniline

Itô, Shôji; Murata, Katsuyuki; Teshima, Seiichi; Aizawa, Ryuji; Asako, Yoshinobu; Takahashi, Kohshin; Hoffman, Brian M.

doi:10.1016/s0379-6779(98)00074-5

Cited by 95 publications

(72 citation statements)

References 17 publications

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“…These results corroborating with Ito et al 25 , when the molar ratio S/N increases, the conductivity decreases; however the solubility of SPAN in polar solvents like water increases. The values for electrical conductivity of all produced membranes (CAPU/SPAN, TPU/PAni TSA and CAPU/PAni TSA ) are smaller than 5.10 -5 S.cm -1 , limit of the measurement unit used, probably because PAni doping can happen during the membrane production (due to the alkalinity of the solvent employed) or due to insufficient dispersion of the PAni into the PU.…”

Section: Electrical Conductivitysupporting

confidence: 91%

“…The obtained PAni was filtered, washed with a diluted HCl solution and dried at 60 ºC for 24 hours. SPAN was obtained as previously described 25 using three different sulfur and nitrogen ratios (S/N), which were 1.5, 2.0 and 3.0. PAni also was doped with p-toluenesulphonic acid, to improve the solubility in dimethylformamide, and denominated as PAni TSA 26,27 .…”

Section: Polyaniline Synthesismentioning

confidence: 99%

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Castor oil and commercial thermoplastic polyurethane membranes modified with polyaniline: a comparative study

et al. 2013

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The study of conducting polymeric membranes is decisive in some areas, as in fuel cells and electrodialysis. This work aims the study of membranes using conventional and conductive polymers blends. Two types of polyurethane were used as conventional polymers, commercial thermoplastic polyurethane and polyurethane synthesized from castor oil and 4-4-dicyclohexylmethane isocyanate. Two kinds of conducting polymers were used, polyaniline doped with organic acid and a self doped polyaniline. The polymers and the membranes were characterized by electrical conductivity, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM). The synthesis of the membranes produced was proper, featuring a complete reaction, analyzed by FTIR. The membranes also showed good mechanical properties and thermal stability (≈ 220 °C). Among the membranes studied, the polyaniline doped with p-toluenesulphonic acid obtained higher thermal and viscoelastic properties. Thus they can be used in separation techniques using membranes.

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Section: Electrical Conductivitysupporting

confidence: 91%

Section: Polyaniline Synthesismentioning

confidence: 99%

Castor oil and commercial thermoplastic polyurethane membranes modified with polyaniline: a comparative study

et al. 2013

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“…[33][34][35] The Ag-PMT nanocomposites were completely soluble in polar solvents such as DMSO, dimethylformamide (DMF), N-methylpyrrolidone (NMP), and Chloroform (Scheme 1).…”

Section: Results and Discussion Solubilitymentioning

confidence: 99%

Synthesis and characterization of poly (m-toluidine)-silver halide nanocomposites: thermal properties and its conducting behavior

Vijayanand¹,

Vivekanandan²,

Mahudeswaran³

et al. 2014

Designed Monomers and Polymers

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Inorganic-organic hybrid nanocomposite of functional polyaniline derivatives has been synthesized successfully using chemical oxidative polymerization of m-toluidine (PMT) with silver nanocolloids (Ag) coated with dodecylbenzenesulfonic acid. The Ag-PMT nanocomposites were characterized using different analytical techniques such as UV-visible, FT-IR, scanning electron microscopy (SEM), X-ray diffraction methods (XRD), and thermal analysis. Conducting properties of these nanocomposites were studied using four-probe method. Thermogravimetric analysis indicated that an enhanced thermal stability of the nanocomposite as compared with the pure PMT polymer. Ag-PMT nanocomposite with~50 nm diameter was observed in the SEM analysis. SEM image also reveals that the silver nanoparticles were well dispersed and embedded in the PMT matrix. XRD pattern shows that the nanocomposite is of crystalline nature. Interestingly, the electrical conductivity of Ag-PMT nanocomposite exhibits three orders of magnitude, i.e. 0.1936 S cm −1 higher than that of pure PMT 1.09 × 10 −3 S cm −1 . The nanocomposite material shows better solubility than the polyaniline.

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“…S1-S3 † for the spectral data of SPAni). 21,22 Graphene oxide (GO) was prepared from natural graphite (325 mesh, Qingdao) according to the modied Hummers' method. 23,24 Dialysis tube with a MWCO of 8000-14 000 is the product of Viskase.…”

Section: Methodsmentioning

confidence: 99%

Electrochemical supercapacitor with polymeric active electrolyte

Chen

et al. 2014

J. Mater. Chem. A

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An electrochemical supercapacitor with a polymeric active electrolyte was designed and fabricated in this work. A water-soluble conducting polymer, sulfonated polyaniline (SPAni), was used in the supercapacitor as the active electrolyte and a semipermeable membrane was employed as the separator of the device. It was found that SPAni in the electrolyte can provide pseudocapacitance via its reversible electrochemical redox reaction. Owing to the good stability of SPAni, the supercapacitor has a long cycling life.Moreover, the migration of SPAni between the two electrodes was blocked by the semipermeable membrane separator, thus self-discharge caused by the shuttle effect of SPAni was suppressed. The research in this paper demonstrates the possibility of using a polymer as the active electrolyte in a supercapacitor and has paved a new way to achieve active electrolyte enhanced supercapacitors with high capacitance and good energy retention.

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Simple synthesis of water-soluble conducting polyaniline

Cited by 95 publications

References 17 publications

Castor oil and commercial thermoplastic polyurethane membranes modified with polyaniline: a comparative study

Castor oil and commercial thermoplastic polyurethane membranes modified with polyaniline: a comparative study

Synthesis and characterization of poly (m-toluidine)-silver halide nanocomposites: thermal properties and its conducting behavior

Electrochemical supercapacitor with polymeric active electrolyte

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