Polymerization of pyrrole onto “track-etch” membranes

Ermolaev, S. V.; Jitariouk, Nicolas; Moël, A. Le

doi:10.1016/s0168-583x(01)00780-7

Cited by 14 publications

(15 citation statements)

References 14 publications

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“…Therefore it is of interest to verify the possibility of an alternative method of CP embedding on the membrane surface. As follows from the literature data, synthesis directly on the membrane surface is a promising method [18][19][20][21][22][23][24][25][26][27][28][29]. These studies were motivated by various interests.…”

Section: Introductionmentioning

confidence: 99%

“…It is thought that the modification of an ion selective polymer with a second polymer characterised by a rigid structure may help to increase the selectivity of the membrane to the required ions, while at the same time maintaining reasonably high permeability. A small group of studies has declared its interest in the production of a new type of separation membrane [23,24], a slightly larger group in the preparation of a new type of functionalised materials [25][26][27][28][29]. Recently, a study was published on the preparation and characterisation of a Nafion/PPy composite for application in direct methanol fuel cells (DMFC), especially with respect to its permeability for methanol [30].…”

Section: Introductionmentioning

confidence: 99%

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Preparation of a Novel Composite Material Based on a Nafion® Membrane and Polypyrrole for Potential Application in a PEM Fuel Cell

Moravcová

Cílová²,

Bouzek³

2005

J Appl Electrochem

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The process of embedding polypyrrole (PPy) on the surface of a Nafion Ò membrane was studied. Three methods of PPy synthesis directly on the membrane surface were compared. The diffusion method based on the separation of monomer and oxidant (peroxidisulphate) solutions by the membrane to be modified is proposed as the most promising one. The monomer diffuses through the membrane to the oxidant side, where it is polymerized. In this case sulphate is incorporated into the film as a counter-ion. PPy film prepared in this way adheres well to the Nafion Ò surface and shows promising electrochemical activity. The permeability of the composite for monomer in comparison to self-standing Nafion Ò film is reduced significantly. This may be important for the potential application of this composite, especially in a direct methanol fuel cell, as an alternative membrane-electrode assembly (MEA), particularly with regard to the currently used MEA's permeability for fuel.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of a Novel Composite Material Based on a Nafion® Membrane and Polypyrrole for Potential Application in a PEM Fuel Cell

Moravcová

Cílová²,

Bouzek³

2005

J Appl Electrochem

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“…The cell compartments were simultaneously filled with the solutions. The polymerization of the test monomers followed an oxidative mechanism [4].…”

Section: Radiationmentioning

confidence: 99%

“…Track membranes have also been used as templates for the synthesis of nanopolymeric materials, which, in particular, possess membrane properties [3,4]. However, research in this area of iontrack technology is in its infancy and many kinetic and structural features of the formation of polymeric microand nanostructures on polymer templates, as well as the physicochemical and other properties of micro-and nanopolymers synthesized, are still poorly known.…”

mentioning

confidence: 99%

Use of poly(ethylene terephthalate) track membranes as template matrices for the preparation of polymeric nanomaterials based on polypyrrole and poly(N-methylpyrrole)

Dobretsova

Ermolaev

Jitariouk³

et al. 2005

High Energy Chem

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Ion-track nanotechnologies for the formation of micro-and nanostructures from various materials, in particular, metals and alloys as nanowires and microtubes, with the use of polymer track membranes as template matrices have received increasing attention in the last few years [1,2]. Track membranes have also been used as templates for the synthesis of nanopolymeric materials, which, in particular, possess membrane properties [3,4]. However, research in this area of iontrack technology is in its infancy and many kinetic and structural features of the formation of polymeric microand nanostructures on polymer templates, as well as the physicochemical and other properties of micro-and nanopolymers synthesized, are still poorly known. Therefore, systematic studies aimed at determining the general features of the polymerization of structurally different monomers on polymer templates, as well as studies on the structure and properties of micro-and nanopolymeric materials thus prepared, are of undoubted scientific and practical interest for the development of this area of ion-track nanotechnology.In this paper, we report preliminary results concerning the polymerization of monomers, such as pyrrole and N -methylpyrrole, on poly(ethylene terephthalate) (PET) membranes with micron-sized pores (1.2-5 µ m). The structure and properties of nanopolymeric membranes synthesized from these monomers were also studied. Note that conducting nanopolymeric materials can be prepared from polypyrrole and its derivatives.These materials can find various applications in technology and medicine, for example, as biosensors [5][6][7]. EXPERIMENTALTrack membranes based on PET films of 10-12 µ m in thickness with various initial parameters (pore diameter d , pore length l , and porosity δ ) (Table 1) were taken as templates. The PET track membranes were obtained in the Flerov Laboratory of Nuclear Reactions at the Joint Institute for Nuclear Research (Dubna). The polymer films were irradiated with accelerated multicharged ions of xenon with an energy of 1 MeV/nucleon on a U-400 cyclotron (fluence of 2 × 10 8 cm -2 ); next, the films were irradiated with UV light at λ ≥ 300 nm in air for 60 min at room temperature. Thereafter, the films were subjected to alkali etching in 3 M NaOH at 338 K for 30 min [8,9].Abstract -The oxidative polymerization of pyrrole and N -methylpyrrole with the use of template synthesis on poly(ethylene terephthalate) (PET) track membranes was studied. By scanning electron microscopy (SEM), it was found that a polymer film was formed on the surface of membranes and on the walls of membrane pores. The rates of polymerization on the surface of membranes and pore walls, as well as the yield and structure of the polymer film, depend on the membrane parameters (pore length and diameter and membrane porosity), the chemical structure of the monomer, the diffusion of polymerized solutions through template pores, and the temperature.

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“…The following nano-and microfiltration membranes are used as templates: poly(ethylene terephthalate) (PET) [5] and polycarbonate [6] track membranes and aluminum membranes [7]. Conducting polymer coatings on the surface of membranes [8] and micro-and nanotubes or microand nanofibers within pores [5,6,9,10] are prepared using template synthesis.…”

mentioning

confidence: 99%

Structure of Conducting Polymer Films Prepared on the Surface and in the Pores of Poly(ethylene terephthalate) Track Membranes by Template Synthesis

et al. 2005

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The results of a structural study of conducting polymer coatings deposited onto poly(ethylene terephthalate) (PET) track membranes by template synthesis are reported. The following aspects of the quality of polymer coatings were studied: the ratio between film and granular polymers, the polymer distribution over the surface of track membranes, and the thickness of polymer layers on the opposite sides of track membranes. The fraction of granular polypyrrole (PPy) on the surface and in the pores of a film increased with pore diameter. A decrease in the polymerization temperature decreased the amount of granular PPy on the surface of membranes, whereas the effect of granular PPy on the water permeability of track membranes remained unchanged. A more homogeneous distribution of PPy over the surface of track membranes can be obtained by density equalization of reacting solutions; however, the fraction of granular PPy on the membrane surface increased in this case. It was found that polymer coatings on the two sides of the surface of a membrane template had different thicknesses. Poly( N -methylpyrrole) completely covered only one side of a track membrane facing a monomer solution.

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Polymerization of pyrrole onto “track-etch” membranes

Cited by 14 publications

References 14 publications

Preparation of a Novel Composite Material Based on a Nafion® Membrane and Polypyrrole for Potential Application in a PEM Fuel Cell

Preparation of a Novel Composite Material Based on a Nafion® Membrane and Polypyrrole for Potential Application in a PEM Fuel Cell

Use of poly(ethylene terephthalate) track membranes as template matrices for the preparation of polymeric nanomaterials based on polypyrrole and poly(N-methylpyrrole)

Structure of Conducting Polymer Films Prepared on the Surface and in the Pores of Poly(ethylene terephthalate) Track Membranes by Template Synthesis

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