Conductive polyaniline-SBS composites from in situ emulsion polymerization

Xie, Huaqing; Ma, Yingfei; Guo, Jun‐Shi

doi:10.1016/s0032-3861(98)00224-9

Cited by 68 publications

(29 citation statements)

References 16 publications

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“…Because of this, the properties of blends of PANI with commercial polymers were investigated in order to obtain materials that combine the electrical and optical properties of the first with the mechanical properties of the second [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] . The methods used to prepare blends and composites of PANI-conventional polymers include solution [1][2][3][4] , polymerization in situ [5][6][7]4 , fusion [8][9][10] , emulsion [11][12][13][14][15] , and inverse emulsion [16][17][18][19] . Poly(vinylidene fluoride) -PVDF is a conventional polymer used as matrix for PANI blends.…”

Section: Introductionmentioning

confidence: 99%

Thermal and mechanical properties of PVDF/PANI blends

et al. 2010

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Poly(vinylidene fluoride)/polyaniline blends of different composition were synthesized by chemical polymerization of aniline in a mixture of Poly(vinylidene fluoride) and N,N-dimethylformamide and their thermal and mechanical behavior was investigated as a function of the polyaniline doping level and the composition using thermogravimetric analysis, differential scanning calorimetry, dynamic mechanical analysis and tensile tests techniques. The results showed the blend obtained presents a good thermal stability with low weight loss up to 300 °C, assigned to water and solvents evaporation. The glass transition and melting point is not affected by the PANI content in the blend, showing that polymers are no miscible. The films produced present a good sustainability; however the presence of the conducting polymer in the blend increases the tensile strength and the Young modulus, while diminishes the elongation at break, as compared to pure PVDF.

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Section: Introductionmentioning

confidence: 99%

Thermal and mechanical properties of PVDF/PANI blends

et al. 2010

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“…This phenomenon is just the opposite from that of PAn/SBS composite. 18 In the latter case, the conductivity of SP composite is higher than that of MP composite, probably because no strong interaction occurs between SBS and PAn and glassy domains of polystyrene exist in SBS.…”

Section: Electrical and Mechanical Properties Of Composites Obtained mentioning

confidence: 96%

“…The percolation threshold for the conductivity is about 14 wt % of PAn content in the composite. The reason why the percolation threshold is higher than that of PAn/ SBS composite 18 is probably due to the strong interaction between NH groups of PAn and OSO 2 Cl groups of CSPE. The better compatibility between PAn and CSPE than that between PAn and SBS results in better dispersion of conductive component in the CSPE matrix, which inhibits the formation of conductive routes.…”

Section: Electrochromic Activity Measurementmentioning

confidence: 97%

“…Last year we reported the preparation of conductive PAn/(styrene-butadiene-styrene)triblkock copolymer (SBS) composites in one-step via in situ emulsion polymerization. 18 Foot and Simon 19 first reported that PAn can be used in electrochromic device due to the change of colors during a voltammetric cycle at pH 0 -1 media. Bernard and Hugot-LeGoff 20 showed that a weakly acidic electrolyte solution (at pH 3 but not pH 5) is best suitable for electrochromic purpose of PAn.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of conductive polyaniline/chlorosulfonated polyethylene composites viain situ emulsion polymerization and study of their properties

Xie

2000

J. Appl. Polym. Sci.

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ABSTRACT:The conductive composites of polyaniline (PAn) and chlorosulfonated polyethylene (CSPE) were prepared by polymerization of aniline in the presence of CSPE, using a direct, one-step in situ emulsion polymerization method. The polymerization of aniline was performed in an emulsion comprising water and xylene containing CSPE in the presence of dodecylbenzene sulfonic acid, which acts both as a surfactant and a dopant for PAn. The composites can be processed by either melt method (MP) or solution method (SP). Conductivity of the composites obtained by different processing methods shows different percolation thresholds: 14 wt % for MP samples and 22 wt % for SP samples. At the same content of PAn, the conductivity of MP composites is higher than that of SP composites. The relationships between mechanical properties and PAn content obtained by the two different processing methods were also investigated. When PAn content of MP samples is between 12 and 18 wt %, the composites behave like a thermoplastic elastomer with tensile strength at 6 -8 MPa, ultimate elongation Ͼ 400% and permanent set Ͻ 30%. The conductivity of composites obtained by SP method after secondary doping with m-cresol is about 6 orders of magnitude higher than the original at below 18 wt % PAn content and the percolation threshold for conductivity is lowered to 3 wt % PAn content. The composite shows no electrochromic activity in acidic solution of LiClO 4 in propylene carbonate, but after secondary doping exhibits electrochromic activity even in neutral electrolyte.

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“…The results revealed that the aniline polymerization in the presence of large surfactant anions such as DS -leads to the deposition of films with good electroactivity, high stability, a greatly enhanced conductivity and a more ordered arrangement of chains, as was reported in the literature. 38 In a solution containing varying concentrations of DS -anion, the PA-filmed electrode shows a potentiometric response proportional to the DS -concentration. According to Doblhofer's model, 39 an electrode potential can be expressed as follows:…”

Section: Electrochemical Polymerizationmentioning

confidence: 99%

Design of a New Dodecyl Sulfate-Selective Electrode Based on Conductive Polyaniline

et al. 2002

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A new, simple, sensitive, low cost and rapid potentiometric method for direct determination of ultra trace amounts of sodium dodecyl sulfate (SDS) with a new DS --selective electrode is reported. The electrode was prepared by electropolymerization of aniline in acidified DS -ion on the surface of a Pt electrode. The cyclic voltammetry (CV) was used for electropolymerization of polyaniline (PA) in the potential range of -200 to +1000 mV vs. Ag/AgCl. This sensor showed a Nernstian behavior (59.0 ± 2.3 mV/decade) over a very wide linear range (1.0 × 10 -9 -3.0 × 10 -6 M) with a detection limit of 1.0 × 10 -9 M. The response time of the electrode was 15 s for 1.0 × 10 -7 M of analyte; the electrode can be used for 4 weeks without any major deviation. This electrode can be used in the pH range of 3.5 -9.8. The selectivity of electrode to DS -over some organic, inorganic and anionic surfactants was investigated with the fixed primary ion method. The results show that the electrode is highly selective to DS -ion over other ions. The proposed electrode was applied to the determination of DS -in real samples.

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Conductive polyaniline-SBS composites from in situ emulsion polymerization

Cited by 68 publications

References 16 publications

Thermal and mechanical properties of PVDF/PANI blends

Thermal and mechanical properties of PVDF/PANI blends

Preparation of conductive polyaniline/chlorosulfonated polyethylene composites viain situ emulsion polymerization and study of their properties

Design of a New Dodecyl Sulfate-Selective Electrode Based on Conductive Polyaniline

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