Soluble polyaniline nanofibers prepared via surfactant-free emulsion polymerization

Wang, Yanmin; Chen, Kai; Li, Tingxi; Li, Huimin; Zeng, Rong‐Chang; Zhang, Ruliang; Gu, Yi-Jie; Ding, Jianxu; Liu, Hongquan

doi:10.1016/j.synthmet.2014.10.038

Cited by 22 publications

(9 citation statements)

References 39 publications

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“…If homogeneous nucleation occurs, well-dispersed PANI nanofibers are obtained, whereas heterogeneous nucleation leads to particle aggregation [ 32 ]. Similarly, after template's removal, PANI structure was lost and the particles aggregated in micron-sized agglomerates ( Fig 6e ) due to strong inter-molecular H-bonding between the chains' backbones [ 33 ]. Other PANI nano- and micro-scale structures were obtained by varying the doping template: granular spherical particles with AOT, splintered PANI with SDS, and amorphous PANI with SLES ( Fig 6b–6d ), whereas commercial PANI showed a granular morphology of irregular shaped micron-sized agglomerates ( Fig 6f ) as described for PANI obtained by chemical synthesis with ammonium peroxydisulfate in a strong acid environment [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

Advanced Synthesis of Conductive Polyaniline Using Laccase as Biocatalyst

et al. 2016

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Polyaniline is a conductive polymer with distinctive optical and electrical properties. Its enzymatic synthesis is an environmentally friendly alternative to the use of harsh oxidants and extremely acidic conditions. 7D5L, a high-redox potential laccase developed in our lab, is the biocatalyst of choice for the synthesis of green polyaniline (emeraldine salt) due to its superior ability to oxidize aniline and kinetic stability at the required polymerization conditions (pH 3 and presence of anionic surfactants) as compared with other fungal laccases. Doses as low as 7.6 nM of 7D5L catalyze the polymerization of 15 mM aniline (in 24 h, room temperature, 7% yield) in the presence of different anionic surfactants used as doping templates to provide linear and water-soluble polymers. Aniline polymerization was monitored by the increase of the polaron absorption band at 800 nm (typical for emeraldine salt). Best polymerization results were obtained with 5 mM sodium dodecylbenzenesulfonate (SDBS) as template. At fixed conditions (15 mM aniline and 5mM SDBS), polymerization rates obtained with 7D5L were 2.5-fold the rates obtained with commercial Trametes villosa laccase. Moreover, polyaniline yield was notably boosted to 75% by rising 7D5L amount to 0.15 μM, obtaining 1g of green polyaniline in 1L-reaction volume. The green polymer obtained with the selected system (7D5L/SDBS) holds excellent electrochemical and electro-conductive properties displayed in water-dispersible nanofibers, which is advantageous for the nanomaterial to be readily cast into uniform films for different applications.

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Section: Resultsmentioning

confidence: 99%

Advanced Synthesis of Conductive Polyaniline Using Laccase as Biocatalyst

et al. 2016

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“…Some of them involve modification of the solubility through the doping process, while some others concentrate in mixing of PAni with process able polymers. Yanmin et al doped PAni with itaconic acid and also fumaric acid to produce PAni soluble in organic solvents [2,3], Utpal et al prepare water soluble PAni using perylene disulphonic acid as dopant [4]. Kuniharu et al prepare water soluble polyaniline composite using alginic acid [5], Salma et al used dodecylbenzenesulfonic acid as dopant and surfactant to produce PAni soluble in DMSO, DMF and chloroform [6], Ekarat et al made Polyaniline water-soluble by interfacial polymerization in the presence of poly(styrene sulfonated sodium salt) [7].…”

Section: Introductionmentioning

confidence: 99%

Electrical investigations of polyaniline/sulfonated polystyrene composites using broadband dielectric spectroscopy

Moussa¹,

Rehim²,

Khairy

et al. 2015

Synthetic Metals

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“…To evaluate the influence of CNSL on the solubility of PAni in water, the methodology described in the literature was adopted [15] . Doped PAni (30 mg) was added to 30 mL of distilled water and ultrasonicated for 30 min at room temperature.…”

Section: Characterizationmentioning

confidence: 99%

“…PAni nanofibers are prepared by methods such as using soft templates [4,14] and surfactant-free emulsion polymerization [15] . Micelle as a soft template has been regarded as an appropriate theory in order to describe the formation of the PAni nanostructure [16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Cashew nut shell liquid, a valuable raw material for generating semiconductive polyaniline nanofibers

et al. 2018

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Cashew nut shell liquid (CNSL) is an abundant and renewable by-product of the cashew nut industry. It appears to be a valuable raw material for generating semiconductive polyaniline (PAni) nanomaterial with enhanced thermal stability and well-defined nanofiber morphology following a polymerization dispersion process. This study confirms that CNSL acts as a soft template during PAni synthesis, leading to an improvement in the nanofiber aspect. CNSL also improves the thermal stability of the PAni nanomaterial. Moreover, CNSL is an effective surfactant that promotes and stabilizes the dispersion of PAni nanofibers within water, allowing the more ecofriendly preparation of PAni nanomaterial by substituting the commonly used organic solvent with aqueous media. Finally, although CNSL promotes the formation of the conductive emeraldine salt form of PAni, increasing CNSL concentrations appear to plasticize the PAni polymer, leading to reduced electrical conductivity. However, this reduction is not detrimental, and PAni nanofibers remain semiconductive even under high CNSL concentrations.

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Soluble polyaniline nanofibers prepared via surfactant-free emulsion polymerization

Cited by 22 publications

References 39 publications

Advanced Synthesis of Conductive Polyaniline Using Laccase as Biocatalyst

Advanced Synthesis of Conductive Polyaniline Using Laccase as Biocatalyst

Electrical investigations of polyaniline/sulfonated polystyrene composites using broadband dielectric spectroscopy

Cashew nut shell liquid, a valuable raw material for generating semiconductive polyaniline nanofibers

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