Phase behavior of polyaniline/dodecyl benzene sulphonic acid mixture

Ikkala, Olli; Lindholm, T.; Ruohonen, H.; Seläntaus, M.; Väkiparta, K.

doi:10.1016/0379-6779(94)02390-k

Cited by 30 publications

(12 citation statements)

References 2 publications

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“…The minimum doping level necessary for its processing is 70% [PAni(DBSA) xϭ0.7 ]. 8 Additionally, the same authors reported that for 1.5 Ͼ x Ͼ 0.7, T g of the complex was lower than 150.0°C and decreased when x values increased. For instance, for x ϭ 0.7 and x ϭ 1.5, T g was 133.0°C and 65.0°C, respectively.…”

Section: Thermal Analysismentioning

confidence: 92%

“…This result was in a good agreement with DSC thermograms of HDBSA reported in the literature. 8,18 In the first heating run, endothermic peaks at 55.0, 84.0, and 107.0°C for PAni-DBSA prepared in chloroform and at 54.0, 87.0, and 121.0°C for PAni-DBSA prepared in xylene were observed. Because such peaks were not present in the second heating run, it could be assumed that they were related to water loss, solvent, or low-molecular-weight oligomers present in the samples.…”

Section: Thermal Analysismentioning

confidence: 95%

“…In the second heating run, a glass-transition process with midpoints at 82.9 (⌬C p ϭ 0.218 J/gK) and 79.4°C (⌬C p ϭ 0.008 J/gK) was observed and corresponded to the PAni-DBSA complexes prepared in chloroform and xylene, respectively. Studies 6,8,9 show that the PAni-DBSA complex presents a phase transition from a pastelike material (with ionic conductivity) to a semisolid material (with electrical conductivity) during the doping process. This transition is a function of the time, temperature, and doping degree.…”

Section: Thermal Analysismentioning

confidence: 99%

See 2 more Smart Citations

Electroactive mixtures of polyaniline and EPDM rubber: Chemical, thermal, and morphological characterization

Domenech

Bortoluzzi

Soldi

et al. 2002

J of Applied Polymer Sci

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ABSTRACT:A new route for blending polyaniline (PAni) and EPDM rubber was devised with maleic anhydride as a compatibilizer precursor. Rubber matrices containing ammonium peroxidisulfate and dodecyl benzene sulfonic acid were cast from organic solvents. Exposure to the monomer vapors allowed the chemical polymerization of aniline. The influence of PAni and the compatibilizer on the thermal properties, chemical structure, electrical conductivity, and morphology of the mixtures was observed with differential scanning calorimetry, thermogravimetric analysis, Fourier transform infrared, in situ conductivity measurements, and optical microscopy. The micrographs showed a good distribution of the PAni complex in the matrix. The use of approximately 2 wt % compatibilizer resulted in chemical interactions between maleic anhydride and the PAni complex formed with dodecyl benzene sulfonic acid, which could enhance the compatibility between the polymers. The obtained blends reached relative electrical conductivity values of up to 9 ϫ 10 Ϫ3 S cm Ϫ1 .

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Section: Thermal Analysismentioning

confidence: 92%

Section: Thermal Analysismentioning

confidence: 95%

Section: Thermal Analysismentioning

confidence: 99%

See 1 more Smart Citation

Electroactive mixtures of polyaniline and EPDM rubber: Chemical, thermal, and morphological characterization

Domenech

Bortoluzzi

Soldi

et al. 2002

J of Applied Polymer Sci

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“…Among all the conducting polymers, polyaniline has a special status due to the presence of reactive -NH-groups in a polymer chain flanked on either side by phenylene rings, which imparts chemical flexibility on the system [17,18].…”

Section: Introductionmentioning

confidence: 99%

Studies on Electrochemical, Optical and Electrical Conductivity of Conducting Composite of o-Anisidine, o-Toluidine and Their Co-polymer

Borole

Kapadi

Mahulikar

et al. 2009

Designed Monomers and Polymers

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A conducting composite of poly(o-anisidine), poly(o-toluidine) and poly(o-anisidine-co-o-toluidine) using incorporation of TiO 2 and SiO 2 was prepared by electrochemical polymerization. The films were electropolymerized in solution containing 0.1 M monomer(s), 1 M sulphuric acid as supporting electrolyte and 10 −5 M TiO 2 and SiO 2 by applying a sequential linear potential scan rate of 50 mV/s between −0.2 and 1.0 V versus an Ag/AgCl electrode. The characterization of the composites was done by cyclic voltametry, UV-Vis spectroscopy, electrical conductivity and thermogravimetric analysis. It is observed that the UV-Vis peaks appear in the region of the conducting emerladine salt (ES) phase. Overall, the polymers prepared using TiO 2 have higher conductivity than SiO 2 , with poly(o-toluidine)-TiO 2 conducting composite having the highest conductivivty. The composite does not lose its colour at higher temperature and, hence, can be utilized as conductive pigments required for anti-electrostatic applications.

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Section: Introductionmentioning

confidence: 99%

Influence of TiO2 and SiO2 on Electrochemical, Optical and Electrical Conductivity of Polyaniline, Poly(o-toluidine) and Their Co-polymer

Borole

Kapadi

Mahulikar

et al. 2009

Designed Monomers and Polymers

View full text Add to dashboard Cite

A conducting composite of polyaniline, poly(o-toluidine) and poly(aniline-co-o-toluidine) using incorporation of TiO 2 and SiO 2 was prepared by electrochemical polymerization. The films were electro-polymerized in solution containing 0.1 M monomer(s), 1 M sulphuric acid as supporting electrolyte and 10 −5 M TiO 2 and SiO 2 , applying a sequential linear potential scan rate of 50 mV/s between −0.2 and 1.0 V versus Ag/AgCl electrode. The characterization of the composites was done by cyclic voltammetry, UV-Vis spectroscopy, electrical conductivity and thermogravimetric analysis. It is observed that the UV-Vis peaks are appearing in the region of conducting emerladine salt (ES) phase. In overall study, the polymers prepared using TiO 2 have higher conductivity than SiO 2 , with the highest conductivity observed for the polyaniline-TiO 2 conducting composite. The composite does not lose its colour at higher temperature and, hence, can be utilized as conductive pigments required for anti-electrostatic applications.

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Phase behavior of polyaniline/dodecyl benzene sulphonic acid mixture

Cited by 30 publications

References 2 publications

Electroactive mixtures of polyaniline and EPDM rubber: Chemical, thermal, and morphological characterization

Electroactive mixtures of polyaniline and EPDM rubber: Chemical, thermal, and morphological characterization

Studies on Electrochemical, Optical and Electrical Conductivity of Conducting Composite of o-Anisidine, o-Toluidine and Their Co-polymer

Influence of TiO2 and SiO2 on Electrochemical, Optical and Electrical Conductivity of Polyaniline, Poly(o-toluidine) and Their Co-polymer

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