Perfluorinated nanocomposite membranes modified by polyaniline: Electrotransport phenomena and morphology

Березина, Н. П.; Kononenko, N. A.; Sytcheva, A.A.-R.; Loza, N. V.; Shkirskaya, S. A.; Hegman, Norbert; Pungor, András

doi:10.1016/j.electacta.2008.10.048

Cited by 55 publications

(30 citation statements)

References 61 publications

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“…The synthesis of polyaniline was carried out directly in perfluorinated matrix of MF-4SK-56 membrane by the method described in [135][136][137][138]. For saturation of a membrane with the phenyl ammonium ions, the solution of 0.01 М monomer aniline on the background of 0.005 М sulfuric acid was used.…”

Section: Composite Membranes Based On Mf-4sk and Polyanilinementioning

confidence: 99%

Structure of perfluorinated membranes investigated by method of standard contact porosimetry

Kononenko

Fomenko

Volfkovich

2015

Advances in Colloid and Interface Science

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Section: Composite Membranes Based On Mf-4sk and Polyanilinementioning

confidence: 99%

Structure of perfluorinated membranes investigated by method of standard contact porosimetry

Kononenko

Fomenko

Volfkovich

2015

Advances in Colloid and Interface Science

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“…Studies of surface morphology of the composites obtained under similar synthesis conditions, by the methods of AFM (Fig. 4a-c) and standard porosimetry [4], showed that PAni is also localized in the surface layers of the membrane. This leads to "fouling" of the composite film with a porous PAni layer (the pore diameter is up to approximately 10 μm) during the 30 days of synthesis.…”

Section: Resultsmentioning

confidence: 97%

“…The samples were placed then in a mixture of polymerizing solutions 0.01 M FeCl 3 , 0.01 M aniline, and 0.5 M H 2 SO 4 , where they were kept for different time intervals: 5 [4].…”

Section: Matrix Synthesis Of Polyanilinementioning

confidence: 99%

“…In a number of papers [2][3][4][5][6], methods of synthesis of bulk-and surface-modified composites based on perfluorinated sulfocationite polymers MF-4SC and PAni have been developed and morphological and transport properties of such composites have been studied. It has been established that nanocomposites MF-4SC/PAni can be used as polymer electrolytes in fuel cells to improve their performance [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Effects of mixed conductivity of nanocomposite membranes MF-4SC/PANI

Фалина

Березина

Sytcheva

et al. 2011

J Solid State Electrochem

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Changes in the conducting and hydrophilic properties of composites MF-4SC/polyaniline (PAni) under conditions of prolonged synthesis have been studied. A maximum of PAni content of about 0.20 by weight, which can be incorporated into the matrix of MF-4SC under these conditions of synthesis, is determined. Percolation behavior of electrical conductivity of the composites after drying was observed. The conductivity of PAni salt inside MF-4SC was estimated within the frames of the percolation model. Using the fibrous cluster model of the membrane and the conductivity data on individual PAni, theoretical assessment of the electrical conductivity of nanocomposite MF-4SC/PAni has been performed. Reasons for a significant reduction in the conductivity of PAni during its integration into the structure of the initial matrix were discussed. A scale of membrane conductivity, reflecting changes in the electrical conductivity of composites at various stages of synthesis, was drawn.

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“…It includes the stage of sorption of phenylammonium (anilinium) ions by the ion-exchange membrane, the stage of initiation of aniline oxidative polymerization by different electron acceptors, and the stage of oxidative polymerization process and formation of polyaniline chains in nanostructural cavities of template matrix. The methods of template synthesis of polyaniline in perfluorinated membrane, presented in [19][20][21][22], were applied and developed in this work. Oxidative polymerization of aniline in bulk or on the surface of the membrane was carried out by three methods:…”

Section: Synthesis Of Compositesmentioning

confidence: 99%

Influence of conditions of polyaniline synthesis in perfluorinated membrane on electrotransport properties and surface morphology of composites

Kononenko

Loza

Shkirskaya

et al. 2015

J Solid State Electrochem

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The conductivity, diffusion, and electroosmotic permeability of composites, obtained in different conditions of polyaniline synthesis on the surface or in volume of perfluorinated MF-4SK membrane, were studied. The oxidative polymerization of aniline was carried out in static conditions in mixture of monomer and oxidant solutions, in concentration field by method of successive diffusion of polymerization solutions through the membrane in water, and in an external electrical field. The concentration of polymerization solutions, the type of electron acceptors, duration of synthesis, and current density were varied to obtain a set of composites. The certain advantages of every method of polyaniline chemical template synthesis were revealed to prepare the materials with required set of the electrotransport characteristics.

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Perfluorinated nanocomposite membranes modified by polyaniline: Electrotransport phenomena and morphology

Cited by 55 publications

References 61 publications

Structure of perfluorinated membranes investigated by method of standard contact porosimetry

Structure of perfluorinated membranes investigated by method of standard contact porosimetry

Effects of mixed conductivity of nanocomposite membranes MF-4SC/PANI

Influence of conditions of polyaniline synthesis in perfluorinated membrane on electrotransport properties and surface morphology of composites

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