Effect of synthesis parameters in polyaniline: influence on yield and thermal behavior

Cortés, María Teresa González; Sierra, Estefanía

doi:10.1007/s00289-005-0467-1

Cited by 40 publications

(21 citation statements)

References 26 publications

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“…The electrical conductivity of PANi is relevant for a variety of applications such as in rechargeable batteries, electromagnetic shielding, and microwave absorption. 5,[7][8][9] Hence, a similar study for PANi will be of much relevance. 2 Out of the several methods for the synthesis of PANi, the easiest method is the chemical oxidative polymerization of aniline.…”

Section: Introductionmentioning

confidence: 98%

Optimization of the conductivity and yield of chemically synthesized polyaniline using a design of experiments

Jelmy

Ramakrishnan

Devanathan

et al. 2013

J of Applied Polymer Sci

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The electrical conductivity and yield of polyaniline (PANi) were optimized using a design of experiments (DOE). PANi samples were synthesized by the chemical oxidative polymerization of aniline using methane sulfonic acid as the dopant acid and ammonium persulfate as the oxidant. The main factors in the synthesis of PANi that can affect the conductivity were identified as (i) the concentration of dopant acid, (ii) oxidant-to-monomer ratio, and (iii) the addition rate of oxidant to monomer. Using a Box-Behnken DOE method the regression equation, main effects plots, contour plots, and optimization plots for conductivity and yield were generated and analyzed. Under the optimized conditions of dopant acid concentration of 0.9M, an oxidant addition rate of 30 mL/h and an OM ratio of 0.9, PANi with a conductivity of 1.95 S/cm and yield of 95% was obtained. The observed trends in the four-point probe conductivity measurements were correlated with the polymer structure using fourier transform infrared spectroscopy, X-ray diffraction studies, and scanning electron microscopy.

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Section: Introductionmentioning

confidence: 98%

Optimization of the conductivity and yield of chemically synthesized polyaniline using a design of experiments

Jelmy

Ramakrishnan

Devanathan

et al. 2013

J of Applied Polymer Sci

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show abstract

“…It is well reported in literature that the electrical conductivity of PANI depends mainly on the dopant concentration, oxidant-to-monomer ratio, the rate of addition of oxidants, the nature of dopants, purity of monomer and polymerization time, etc. [18][19][20]. Crosslinked hydrogels based on gum ghatti were studied to determine their absorbency and biodegradability [21,22].…”

mentioning

confidence: 99%

Gum ghatti based novel electrically conductive biomaterials: A study of conductivity and surface morphology

Sharma¹,

Kaith²,

Kumar³

et al. 2014

Express Polym. Lett.

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“…The decrease in the yield and conductivity of POT at higher Bz 2 O 2 concentrations may be assigned to over-oxidation of radical cations and POT. [23,24] The over-oxidation of radical cations, which are responsible for growth of the polymer chains, interrupts the polymerization and causes the decrease in yield. On the other hand, the over-oxidation of POT to its nonconducting form decreases the conductivity of POT.…”

Section: Monomer and Oxidant Concentrationmentioning

confidence: 99%

Synthesis of Poly(o-toluidine) in DMF/Water Mixture Using Benzoyl Peroxide

Mucuk

Karakışla

Saçak

2009

International Journal of Polymer Analysis and Characterization

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The chemical polymerization of o-toluidine was carried out in dimethylformamide=aqueous HCl solution using benzoyl peroxide. The conductivity of poly(o-toluidine) (POT) doped with HCl changed from 2.0 Â 10 À4 to 15.6 Â 10 À4 S cm À1 depending on the polymerization parameters. The solubility of POT in DMSO was found as 0.3 g=100 mL, in which the solubility of HCl-doped polyaniline was 0.042 g=100 mL. Characterization of synthesized POT was performed by conductivity, solubility, FT-IR, UV-vis, and TGA techniques. Thermal-sensing property of POT was also investigated between À10 and þ120 C by heating-cooling cycles.

show abstract

Effect of synthesis parameters in polyaniline: influence on yield and thermal behavior

Cited by 40 publications

References 26 publications

Optimization of the conductivity and yield of chemically synthesized polyaniline using a design of experiments

Optimization of the conductivity and yield of chemically synthesized polyaniline using a design of experiments

Gum ghatti based novel electrically conductive biomaterials: A study of conductivity and surface morphology

Synthesis of Poly(o-toluidine) in DMF/Water Mixture Using Benzoyl Peroxide

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