Thermal properties of chemically synthesized polyaniline (EB) powder

Ding, Lili; Wang, Xin; Gregory, Richard V.

doi:10.1016/s0379-6779(99)00035-1

Cited by 186 publications

(103 citation statements)

References 17 publications

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“…31-37 An broad endothermic peak over a temperature region of 220~270 o C in the DSC curve which may denote dissociation of PANI-DC. [31][32][33][34][35][36][37] These results agree with other studies and it was found that the PANI-DC prepared in this study had the same structure as the PANI-DC described in previous studies. [31][32][33][34][35][36][37] Particle Size of PANI-DC.…”

Section: Resultssupporting

confidence: 91%

Preparation and properties of waterborne-polyurethane coating materials containing conductive polyaniline

Kwon

Kim

2004

Macromol. Res.

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We have prepared an aqueous dispersion of poly(aniline-dodecyl benzene sulfonic acid complex) (PANI-DC) that has an intrinsic viscosity ([η]) near 1.3 dL/g using aniline as a monomer, dodecyl benzene sulfonic acid (DBSA) as a dopant/emulsifier, and ammonium peroxodisulfate (APS) as an oxidant. We found that the electrical conductivity of a PANI-DC pellet was 0.7 S/cm. A waterborne-polyurethane (WBPU) dispersion, obtained from isophorone diisocyanate/polytetramethylene oxide glycol/dimethylol propionic acid/ethylene diamine/triethylene amine, was used as a matrix polymer. We prepared blend films of WBPU/PANI-DC with variable weight ratios (from 99/1 to 66/34) by solution blending/casting and investigated the effects that the PANI-DC content has on the mechanical and dynamic mechanical properties, hardness, electrical conductivity, and antistaticity of these films. The tensile strength, percentage of elongation, and hardness of WBPU/PANI-DC blend films all decreased markedly upon increasing the PANI-DC content. The antistatic half-life time (τ 1/2 ) of pure WBPU film was about 110 s, but we found that those of WBPU/ultrasound-treated PANI-DC blend films decreased exponentially from 1.2 s to 0.1 s to almost 0 s upon increasing the PANI-DC content from 1 wt% to 15 wt% to *15 wt%, respectively.

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Section: Resultssupporting

confidence: 91%

Preparation and properties of waterborne-polyurethane coating materials containing conductive polyaniline

Kwon

Kim

2004

Macromol. Res.

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“…The glass transition temperature (change of the amorphous state to the crystalline state) verified in this study was 165.3°C, an intermediate temperature between the values observed by Ding et al, (1999) for the hydrochloric acid doped polyaniline. Chauhan et al (2011), studying the thermal behavior of emeraldine base PANI, reported two significant different events: one in the range of 25°C to 60°C, credited to the evaporation of adsorbed water, and a second between 90°C to 115°C due possibly to cross-linking reactions between nearby quinoidal rings in the structure of the polymer.…”

Section: Thermal Characterizationsupporting

confidence: 59%

Characterization and Evaluation of Silver-Nanoparticle-Incorporated in Composite Graphite Aiming at their Application in Biosensors

Santos

Ribeiro

Bosco

et al. 2017

Braz. J. Chem. Eng.

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-Biosensors based on nanomaterial composites have been investigated for their potential to function as high sensitivity signal response devices. In the present study, we report the fabrication of silver nanoparticles (AgNPs) on a graphite epoxy composite electrode (GEC) and mixed with the polyaniline (a conductive emeraldine salt form polymer) composite electrode (AgNPs/PANI/GEC), in order to compare the performance of the generated electrochemical response signals. Cyclic voltammetry tests were conducted to compare the quality and intensity of signals from the different prepared electrodes. Tests for the AgNPs/PANI/GEC electrodes were made with and without the enzymes alcohol oxidase and horseradish peroxidase immobilized on the composite surface. The prepared AgNPs/PANI/GEC nanocomposite was evaluated by thermal analysis. Scanning electron microscopy images and EDX were obtained for characterization of the electrode surface morphology. Square wave voltammetry techniques were then employed for ethanol analysis with the AOX/HRP/AgNPs/PANI/GEC biosensor achieving good results in a range of 0.37M to 0.65 M.

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“…Conducting polymers have become a popular basic material for advanced applications including plastic batteries, EMI shielding, electrochromic displays and sensors [1][2][3][4][5][6][7]. Among conducting polymers, polyaniline (PANI) has been extensively studied for its environmental stability in the conducting form, ease of synthesis, low cost and high conductivity.…”

Section: Introductionmentioning

confidence: 99%

Thermal Behaviour of Chemically Synthesized Polyanilines/Polystyrene Sulphonic Acid Composites

Neetika¹,

Kumar²,

Tomar³

2012

IJMC

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Polyanilines are synthesized by free radical chemical oxidative polymerization of aniline & o-toluidine using ammonium persulphate as an oxidant in protonic acid medium. These polymers have been introduced into polystyrene sulphonic acid (PSSA) in 2:1, 1:1, 1:2 compositions for the preparation of composite materials. The composite samples so obtained are thermally characterized by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction, and FTIR spectra. The incorporation of polymer in PSSA has been endorsed by FTIR analysis. TGA data reveals that the (Polyaniline/Polystyrene sulphonic acid) PANI/PSSA (2:1) and (Poly o-toluidine/Polystyrene sulphonic acid) POT/PSSA (2:1) composites show better thermal stability than their 1:1 and 1:2 counterparts. Steric hindrance of -CH 3 group present in ortho position and sulphonic acid group of PSSA affects the thermal behaviour of composites. Two-step transitions are clearly reported from the DSC thermograms of polyanilines/PSSA composites and non-reversing chemical cross-linking reaction was further confirmed by X-ray diffraction and DSC thermograms.

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Thermal properties of chemically synthesized polyaniline (EB) powder

Cited by 186 publications

References 17 publications

Preparation and properties of waterborne-polyurethane coating materials containing conductive polyaniline

Preparation and properties of waterborne-polyurethane coating materials containing conductive polyaniline

Characterization and Evaluation of Silver-Nanoparticle-Incorporated in Composite Graphite Aiming at their Application in Biosensors

Thermal Behaviour of Chemically Synthesized Polyanilines/Polystyrene Sulphonic Acid Composites

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