Sulfonated polyaniline

Mav, Ida; igon, Majda; Šebenik, Anton

doi:10.1016/s0379-6779(98)01166-7

Cited by 29 publications

(20 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[14,15] A similar decrease in the conductivity was observed for AN/(3-aminobenzene sulfonic acid) copolymers. [29] As illustrated in Figures 7-9, the conductivity of the AN/ SDP (50:50) copolymers steadily increases with an increase in the oxidant/monomer ratio, monomer concentration, or by extending the polymerization time, because of an increase in the oxidized-state content or molecular weight and therefore conjugation length. However, the conductivity of the copolymers varies unusually with HCl concentration (Figure 10) and polymerization temperature (data not shown).…”

Section: Properties Of the An/sdp Copolymer Particlesmentioning

confidence: 93%

Facile Synthesis and Optimization of Conductive Copolymer Nanoparticles and Nanocomposite Films from Aniline with Sulfodiphenylamine

Lü

Huang

2006

Chemistry A European J

View full text Add to dashboard Cite

A new series of electrically conductive pure copolymer nanoparticles was facilely synthesized by using oxidative polymerization of aniline (AN) and sodium diphenylamine-4-sulfonate (SDP) in acidic media in the absence of stabilizer. The variation of the structure of the copolymer particles was comprehensively studied by carefully choosing several important parameters, such as the comonomer ratio, oxidant/monomer ratio, polymerization time and temperature, monomer concentration, acidic medium, and oxidant species. Analytical techniques used include IR and UV-visible spectroscopy, X-ray diffraction, laser particle analysis, atomic force microscopy, and transmission electron microscopy. It was found that the particle size varied significantly with the above-mentioned polymerization parameters, only changes in the salt concentration in the aqueous testing solution had no noticeable effect. The polymerization conditions were optimized for the formation of copolymer nanoparticles with sought-after properties. The doped copolymer particles of AN/SDP (50:50) at an oxidant/monomer molar ratio of 0.5 exhibit a minimum length of 50 nm and a minimum diameter of 44 nm. The bulk electrical conductivity of the copolymer particles increases greatly from 5.90x10(-4) to 1.15x10(-2) S cm(-1) with increasing AN content. Compared with barely soluble polyaniline, the copolymers exhibit a remarkably enhanced solubility in most solvents, including NH4OH and even water, due to the presence of the hydrophilic sulfonic groups. Nanocomposite films of the nanoparticles and cellulose diacetate exhibit a percolation threshold of down to 0.1 wt %, at which the film retains 98% of the transparency, 94% of the strength, and 5x10(7) times the conductivity of a pure cellulose diacetate film.

show abstract

Section: Properties Of the An/sdp Copolymer Particlesmentioning

confidence: 93%

Facile Synthesis and Optimization of Conductive Copolymer Nanoparticles and Nanocomposite Films from Aniline with Sulfodiphenylamine

Lü

Huang

2006

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…All doped forms of PANI (conductive) are practically insoluble substances. However, dissolution of the doped PANI in NMP can be achieved adding a small amount of TEA [14] or another amine, e.g. diethylamine, ethylenediamine.…”

Section: Resultsmentioning

confidence: 99%

Zein-Polyaniline Blends—a Route to Electrically Conductive Biopolymer

Wheelwright

Ray

Easteal

2012

Molecular Crystals and Liquid Crystals

View full text Add to dashboard Cite

Preparation of zein-methanesulfonic acid doped polyaniline (PANI) conductive blends using different approaches is described. Zein-PANI films from homogeneous solutions of the components in 1-methyl-2-pyrrolidinone were made by casting method. In another approach, in situ polymerisation of aniline in the presence of zein or corn gluten meal (CGM) was performed. It was carried out in heterogeneous conditions onto the suspension of zein or CGM and also homogeneously with zein and aniline dissolved in aqueous alcohol. The electrical conductivity of the zein-PANI products was measured. They were also characterised by Fourier Transform Infra Red Spectroscopy, Dynamic Mechanical Thermal Analysis, Gel Permeation Chromatography, X-ray Photoelectron Spectroscopy, Elemental analysis and Scanning Electron Microscopy.

show abstract

“…The subsequent polymerization of ANIA is therefore inhibited, which leads to a large portion of unreacted ANIA even at longer reaction times, as can be seen in Fig 3 and in Table 1. Thus, only a small part of ANIA participates in copolymerization, which suggests that ANIA alone hardly generates the reactive intermediates, which is due to the unfavorable combination of electron‐withdrawing and steric effects of the sulfonic16, 18, 19 or carboxylic group. This is supported also by the composition of OMA and MA copolymers prepared in a bench‐scale synthesis 18.…”

Section: Resultsmentioning

confidence: 99%

A kinetic study of the copolymerization of substituted anilines by ¹H NMR

Mav

Žigon

2002

Polymer International

View full text Add to dashboard Cite

We investigated the kinetics of oxidative chemical copolymerization of 2‐methoxyaniline (OMA) with the following acidic substituted anilines (ANIAs): 2‐aminobenzoic acid, 3‐aminobenzoic acid, 2‐aminobenzenesulfonic acid and 3‐aminobenzenesulfonic acid by monitoring monomer depletion using 1H NMR spectroscopy. In order to characterize kinetically these new copolymerization systems, a semi‐empirical kinetic model for copolymerization systems with a large difference in monomer reactivities was used, whereas the monomer reactivity ratios were determined by employing the Kelen–Tüdõs (KT) method. Owing to the much higher reactivity of OMA compared to that of ANIA monomers, the conversion of OMA starts before that of ANIA and both the initiation and propagation rates are higher than those for ANIAs. The ANIA end‐conversion is much smaller (from 21 to 31%) than that of OMA (from 75% to 90%). © 2002 Society of Chemical Industry

show abstract

Sulfonated polyaniline

Cited by 29 publications

References 3 publications

Facile Synthesis and Optimization of Conductive Copolymer Nanoparticles and Nanocomposite Films from Aniline with Sulfodiphenylamine

Facile Synthesis and Optimization of Conductive Copolymer Nanoparticles and Nanocomposite Films from Aniline with Sulfodiphenylamine

Zein-Polyaniline Blends—a Route to Electrically Conductive Biopolymer

A kinetic study of the copolymerization of substituted anilines by ¹H NMR

Contact Info

Product

Resources

About

Sulfonated polyaniline

Cited by 29 publications

References 3 publications

Facile Synthesis and Optimization of Conductive Copolymer Nanoparticles and Nanocomposite Films from Aniline with Sulfodiphenylamine

Facile Synthesis and Optimization of Conductive Copolymer Nanoparticles and Nanocomposite Films from Aniline with Sulfodiphenylamine

Zein-Polyaniline Blends—a Route to Electrically Conductive Biopolymer

A kinetic study of the copolymerization of substituted anilines by 1H NMR

Contact Info

Product

Resources

About

A kinetic study of the copolymerization of substituted anilines by ¹H NMR