Electrochemical synthesis of polypyrrole/polyimide conducting composite using a polyamic acid precursor

Iroh, Jude O.; Levine, Kirill L.

doi:10.1016/s0014-3057(02)00047-2

Cited by 28 publications

(14 citation statements)

References 7 publications

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“…11,12 To improve the structural and physical properties of Ppy, much research have been done to form a composite of Ppy with conventional polymers. [13][14][15][16] Therefore, a new generation of the conductive composites of Ppy/cellulose with high galvanostatic cycling stability (for use in flexible energy devices), high thermal stability (for use in nanofibrous membrane), high sensitivity (for use in gas sensors and biosensors), high-capacity electrochemical control solid state material (for the release of deoxyribonucleic acid…”

Section: Introductionmentioning

confidence: 99%

Novel conductive polypyrrole/zinc oxide/chitosan bionanocomposite: synthesis, characterization, antioxidant, and antibacterial activities

Ebrahimiasl¹,

Zakaria²,

Kassim³

et al. 2014

IJN

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An antibacterial and conductive bionanocomposite (BNC) film consisting of polypyrrole (Ppy), zinc oxide (ZnO) nanoparticles (NPs), and chitosan (CS) was electrochemically synthesized on indium tin oxide (ITO) glass substrate by electrooxidation of 0.1 M pyrrole in aqueous solution containing appropriate amounts of ZnO NPs uniformly dispersed in CS. This method enables the room temperature electrosynthesis of BNC film consisting of ZnO NPs incorporated within the growing Ppy/CS composite. The morphology of Ppy/ZnO/CS BNC was characterized by scanning electron microscopy. ITO–Ppy/CS and ITO–Ppy/ZnO/CS bioelectrodes were characterized using the Fourier transform infrared technique, X-ray diffraction, and thermogravimetric analysis. The electrical conductivity of nanocomposites was investigated by a four-probe method. The prepared nanocomposites were analyzed for antioxidant activity using the 2,2-diphenyl-1-picrylhydrazyl assay. The results demonstrated that the antioxidant activity of nanocomposites increased remarkably by addition of ZnO NPs. The electrical conductivity of films showed a sudden decrease for lower weight ratios of ZnO NPs (5 wt%), while it was increased gradually for higher ratios (10, 15, and 20 wt%). The nanocomposites were analyzed for antibacterial activity against Gram-positive and Gram-negative bacteria. The results indicated that the synthesized BNC is effective against all of the studied bacteria, and its effectiveness is higher for Pseudomonas aeruginosa . The thermal stability and physical properties of BNC films were increased by an increase in the weight ratio of ZnO NPs, promising novel applications for the electrically conductive polysaccharide-based nanocomposites, particularly those that may exploit the antimicrobial nature of Ppy/ZnO/CS BNCs.

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Section: Introductionmentioning

confidence: 99%

Novel conductive polypyrrole/zinc oxide/chitosan bionanocomposite: synthesis, characterization, antioxidant, and antibacterial activities

Ebrahimiasl¹,

Zakaria²,

Kassim³

et al. 2014

IJN

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“…Studies on the elelctromagnetic interference (EMI) shielding effectiveness of the PPY-CMC composite filmwere carried out in the frequency range of [8][9][10][11][12] GHz. The prepared PPY-CMC composite films offered an average shielding effectiveness of around 41 db ( Figure 6) while the PPY film showed an average shielding effectiveness around 37 dB (Figure 7).…”

Section: Electromagnetic Interference Shieldingmentioning

confidence: 99%

“…Much research efforts have been generated to produce composites or blends of conducting polymer film with some insulating polymers in order to overcome the drawbacks such as poor processability and lack of essential mechanical properties exhibited by these polymers 5 . In this technique, a host of insulating polymers (namely, poly(styrenesulphonate) 6 , polycarbonate 7 , poly(vinyl chloride) 8 , nitrile rubber 9 , polyimide 10 and poly(vinyl alcohol) 11 ) have been combined with any conducting polymer (such as polypyrrole, polyaniline, polythiophene) in an aqueous or organic medium to produce conducting polymer composites which will have the conducting properties of the conducting polymer and some mechanical properties of the host insulating polymer.…”

Section: Introductionmentioning

confidence: 99%

Untitled

Mahmud¹,

Kassim²,

Zainal³

et al. 2005

ScienceAsia

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An effort has been made to produce polypyrrole-carboxymethylcelllulose (PPY-CMC) conducting polymer composite film on Indium Tin Oxide (ITO) glass electrode from an aqueous solution containing pyrrole monomer, p-toluenesulfonate electrolyte and carboxymethylcellulose (CMC) insulating polymer. The conductivity of the prepared composite film was found to increase with the increase in CMC concentration in pyrrole solution. The optical microscopic study showed the influence of CMC concentration in the pyrrole solution on the morphological changes of the prepared film. The dynamic mechanical analysis (DMA) on the prepared PPY-CMC film revealed the higher plastic property of the PPY-CMC composite film due to the addition of CMC in the polypyrrole structure. The electromagnetic interference (EMI) shielding effectiveness of PPY-CMC film in the frequency range of 8-12 GHz showed a high shielding effectiveness above 41 db, which supported its probable use in various electromagnetic interference shielding applications.

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“…Electropolymerization has been used to deposit both electro-active and electro-inactive polymers onto a number of conductive surfaces including platinum [14], indium tin oxide [15], carbon [16,17], stainless steel [18] and zinc [19]. In addition, the over-oxidation of polypyrroles in the presence of template molecules has been used to form conducting MIPs for a variety of compounds onto a number of electrode materials.…”

Section: Introductionmentioning

confidence: 99%

Electrochemically Deposited Polymer‐Coated Gold Electrodes Selective for 2,4‐Dichlorophenoxyacetic Acid

2005

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Electropolymerized membranes on gold electrodes doped with 2,4-dichlorophenoxyacetic acid (2,4-D) were prepared from a solution containing resorcinol, o-phenylenediamine and 2,4-D. Fourier Transform Infrared (FTIR) spectroscopy was used to evaluate the incorporation and interaction of 2,4-D with the polymer matrix prior to and after the sensing experiments. The FTIR data indicate that 2,4-D does not leach appreciably from the polymer matrix under experimental conditions employed for the sensing studies. The electrochemical current response for 2,4-D is compared for the doped polymer-coated and control polymer-coated electrode. The response of the doped polymerelectrode was dependent on increasing concentrations of 2,4-D and 2,4-dichlorophenol while unresponsive to benzoic acid.

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Electrochemical synthesis of polypyrrole/polyimide conducting composite using a polyamic acid precursor

Cited by 28 publications

References 7 publications

Novel conductive polypyrrole/zinc oxide/chitosan bionanocomposite: synthesis, characterization, antioxidant, and antibacterial activities

Novel conductive polypyrrole/zinc oxide/chitosan bionanocomposite: synthesis, characterization, antioxidant, and antibacterial activities

Untitled

Electrochemically Deposited Polymer‐Coated Gold Electrodes Selective for 2,4‐Dichlorophenoxyacetic Acid

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