On the origin of colloidal particles in the dispersion polymerization of aniline

Stejskal, Jaroslav; Sapurina, Irina

doi:10.1016/j.jcis.2004.02.053

Cited by 74 publications

(35 citation statements)

References 59 publications

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“…3) [57]. These are produced by the polymerization of aniline in a medium containing the stabilizer, a suitable water-soluble polymer [13].…”

Section: Concept Of Film and Colloidal Particle Formationmentioning

confidence: 99%

“…These are produced by the polymerization of aniline in a medium containing the stabilizer, a suitable water-soluble polymer [13]. It has been proposed that the role of a surface is taken by the stabilizer [57]. An aniline oligomer adsorbs at the stabilizer chains and produces a PANI nucleus.…”

Section: Concept Of Film and Colloidal Particle Formationmentioning

confidence: 99%

“…It has been observed that the dimensions of colloidal particles and the thickness of the films grown on flat surfaces are comparable [26]. It has been proposed that the formation of both forms may have a common origin [57]. As the films grow from aniline oligomers adsorbed at the surface, similar adsorption of aniline oligomer on the stabilizer chain might stimulate the nucleation of a colloidal particle.…”

Section: Introductionmentioning

confidence: 99%

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Polyaniline: Thin films and colloidal dispersions (IUPAC Technical Report)

Stejskal

Sapurina

2005

Pure and Applied Chemistry

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225

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Several workers from various institutions in six countries have prepared thin films and colloidal polyaniline dispersions. The films were produced in situ on glass supports during the oxidation of anilinium chloride with ammonium peroxydisulfate in water. The average thickness of the films, assessed by optical absorption, was 125 ± 9 nm, and the conductivity of films was 2.6 ± 0.7 S cm–1. Films prepared in 1 mol l–1 HCl had a similar thickness, 109 ± 10 nm, but a higher conductivity, 18.8 ± 7.1 S cm–1. Colloidal polyaniline particles stabilized with a water-soluble polymer, poly(N-vinylpyrrolidone) [poly(1-vinylpyrrolidin-2-one)], have been prepared by dispersion polymerization. The average particle size, 241 ± 50 nm, and polydispersity, 0.26 ± 0.12, have been determined by dynamic light scattering. The preparation of these two supramolecular polyaniline forms was found to be well reproducible.

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“…3) [57]. These are produced by the polymerization of aniline in a medium containing the stabilizer, a suitable water-soluble polymer [13].…”

Section: Concept Of Film and Colloidal Particle Formationmentioning

confidence: 99%

Section: Concept Of Film and Colloidal Particle Formationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Polyaniline: Thin films and colloidal dispersions (IUPAC Technical Report)

Stejskal

Sapurina

2005

Pure and Applied Chemistry

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225

130

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“…The main drawback of polyaniline in its conductive form (protonated emeraldine) is its difficult processability, owing to the low solubility in both aqueous and organic solvents and its infusibility, as well as the intrinsic poor mechanical properties. To overcome these limitations, PANI is often produced in the form of colloidal nanoparticles by recourse to suitable surfactants (Stejskal and Sapurina, 2004) or blended with other, generally insulating, polymers (Cho et al, 2004) or synthesized in situ onto functionalized substrates (Scaffaro et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

E-beam crosslinked, biocompatible functional hydrogels incorporating polyaniline nanoparticles

Dispenza

Sabatino

Niconov

et al. 2012

Radiation Physics and Chemistry

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a b s t r a c t PANI aqueous nanocolloids in their acid-doped, inherently conductive form were synthesised by means of suitable water soluble polymers used as stabilisers. In particular, poly(vinyl alcohol) (PVA) or chitosan (CT) was used to stabilise PANI nanoparticles, thus preventing PANI precipitation during synthesis and upon storage. Subsequently, e-beam irradiation of the PANI dispersions has been performed with a 12 MeV Linac accelerator. PVA-PANI nanocolloid has been transformed into a PVA-PANI hydrogel nanocomposite by radiation induced crosslinking of PVA. CT-PANI nanoparticles dispersion, in turn, was added to PVA to obtain wall-to-wall gels, as chitosan mainly undergoes chain scission under the chosen irradiation conditions. While the obtainment of uniform PANI particle size distribution was preliminarily ascertained with laser light scattering and TEM microscopy, the typical porous structure of PVA-based freeze dried hydrogels was observed with SEM microscopy for the hydrogel nanocomposites. UV À visible absorption spectroscopy demonstrates that the characteristic, pH-dependent and reversible optical absorption properties of PANI are conferred to the otherwise optically transparent PVA hydrogels. Selected formulations have been also subjected to MTT assays to prove the absence of cytotoxicity.

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“…Such dispersions are produced when the polymerization of aniline is carried out in the presence of a suitable watersoluble polymer, 17,20 such as poly(N-vinylpyrrolidone) (PVP). 19,21 The resulting PANI/PVP composite particles have submicrometer size. Colloidal dispersions allow for the solution processability and easy deposition by means of low cost of spin coating or printing techniques.…”

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confidence: 99%

Charge transport and contact resistance in coplanar devices based on colloidal polyaniline dispersion

Masillamani

Peřinka

Hajná

et al. 2016

J Polym Sci B Polym Phys

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ABSTRACT:The charge transport properties of thin films prepared from colloidal dispersion of polyaniline stabilized by poly(N-vinylpyrrolidone) (PANI/PVP) have been investigated. The electrical characterization of coplanar device comprising of gold electrodes and PANI/PVP film deposited by spin coating served to gain insights into the contact and bulk resistance. The films prepared from PANI/PVP colloidal dispersion show high stability over a large temperature range. Temperature dependent measurements in the range from 90 to 350 K reveal that the charge transport can be described by a threedimensional variable-range hopping mechanism as the dominant mode in the films. The stability of the films cast from dispersion within a large temperature range opens the possibility of the application as a polymer semiconductor layer in sensors and charge-transport interlayer in organic solar cells. V C 2016

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On the origin of colloidal particles in the dispersion polymerization of aniline

Cited by 74 publications

References 59 publications

Polyaniline: Thin films and colloidal dispersions (IUPAC Technical Report)

Polyaniline: Thin films and colloidal dispersions (IUPAC Technical Report)

E-beam crosslinked, biocompatible functional hydrogels incorporating polyaniline nanoparticles

Charge transport and contact resistance in coplanar devices based on colloidal polyaniline dispersion

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