Synthesis of Polypyrrole Using Ammonium Peroxy Disulfate (APS) as Oxidant Together with Some Dopants for Use in Gas Sensors

Chitte, Hemant K.; Bhat, N. V.; Gore, Ajit V.; Shind, Ganesh N.

doi:10.4236/msa.2011.210201

Cited by 15 publications

(18 citation statements)

References 29 publications

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“…FTIR spectra of pure PPy shows main characteristic peak at 649 cm −1 which corresponds to ring deformation, peak at 1047 cm −1 refers C-H in plane bend and peak at 1198 cm −1 corresponds to ring breathing, The band at 1178 cm −1 may be assigned for N C stretching band, the peak at 1365 cm −1 is due to fundamental vibrations of polypyrrole ring, the peaks at 1556.8 cm −1 and 1489.4 cm −1 attributes to C C stretching, the occurrence of small peak at 3438 cm −1 is assigned to the presence of N-H stretching frequencies. The peaks observed in the present work match well with the previous studies [18]. In addition to these peaks two peaks are noticed at 739 cm −1 and 916 cm −1 in nanocomposites which are assigned to C-H out-of-plane deformation and O-H bend respectively.…”

Section: Ftir Analysissupporting

confidence: 91%

Synthesis, characterization and DC conductivity studies of polypyrrole/copper zinc iron oxide nanocomposites

Shanthala¹,

Devi²,

Murugendrappa³

2017

Journal of Asian Ceramic Societies

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Polypyrrole and polypyrrole/copper zinc iron oxide (copper zinc ferrite) nanocomposites were synthesized by in-situ polymerization using Ammonium Persulphate as oxidising agent. The nanocomposites were synthesized by mixing polypyrrole and copper zinc iron oxide in different weight percentages. The formation of nanocomposites and changes in the structural properties were investigated by characterizing the samples using XRD, FTIR, SEM and EDX analysis. The size of the particle was analysed by XRD using Scherrer equation and found to be in 20 nm range. DC conductivity was measured in the temperature range 300 K-473 K. The DC conductivity was found to be constant for the temperature range from 300 K-433 K. But the conductivity showed an exponential increase for the temperature 433 K-473 K, and it obeys Arrhenius relation. Activation energies were evaluated from Arrhenius plots for all compositions. Results show that incorporation of additive material significantly reduces the activation energy for the DC conductivity of the composites, and the decrease in the activation energy is also dependent on the amount of the nanoparticles in the composites. As the polymers are used in the various manufacturing products, this study indicates the possibility of using such polymers in the form of composites as superior insulating material in the fields of electrical or electronic insulation and allied areas.

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Section: Ftir Analysissupporting

confidence: 91%

Synthesis, characterization and DC conductivity studies of polypyrrole/copper zinc iron oxide nanocomposites

Shanthala¹,

Devi²,

Murugendrappa³

2017

Journal of Asian Ceramic Societies

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“…FTIR spectra of pure PPy shows main characteristic peak at 675 cm -1 which corresponds to ring deformation, peaks at 817 cm -1 and 917.75 cm -1 correspond to C-H deformation, peak at 1074 cm -1 refers C-H in plane bend and peak at 1198 cm -1 corresponds to ring breathing, the peak at 1365 cm -1 is due to fundamental vibrations of PPy ring, the peaks at 1547 cm -1 and 1489.4 cm -1 attributes to C=C stretching, the occurrence of small peak at 3438 cm -1 is assigned to the presence of N-H stretching frequencies. The peaks observed in the present work match well with the previous studies [15][16]. In addition to these peaks two peaks are noticed at 617cm -1 and 1244 cm -1 which are assigned to C=O out-of-plane bend and C-N stretch respectively.…”

Section: Ftir Analysissupporting

confidence: 91%

Characterization and Evaluation of Activation Energy for Dc Conductivity of Polypyrrole/Nickel Zinc Iron Oxide Nanocomposites

Shanthala¹,

Devi²,

Murugendrappa³

et al. 2017

IOSR JAP

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“…The pure polymer and the hybrids with a low concentration of the conducting filler exhibit low electrical conductivity (see Figure ) which is characteristic for polypyrrole in its undoped state ,. Upon the further addition of the filler, a significant change in the conductivity occurs.…”

Section: Resultsmentioning

confidence: 99%

Tuning of the Seebeck Coefficient and the Electrical and Thermal Conductivity of Hybrid Materials Based on Polypyrrole and Bismuth Nanowires

et al. 2018

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The growing demand for clean energy catalyzes the development of new devices capable of generating electricity from renewable energy resources. One of the possible approaches focuses on the use of thermoelectric materials (TE), which may utilize waste heat, water, and solar thermal energy to generate electrical power. An improvement of the performance of such devices may be achieved through the development of composites made of an organic matrix filled with nanostructured thermoelectric materials working in a synergetic way. The first step towards such designs requires a better understanding of the fundamental interactions between available materials. In this paper, this matter is investigated and the questions regarding the change of electrical and thermal properties of nanocomposites based on low-conductive polypyrrole enriched with bismuth nanowires of well-defined geometry and morphology is answered. It is clearly demonstrated that the electrical conductivity and the Seebeck coefficient may be tuned either simultaneously or separately within particular Bi NWs content ranges, and that both parameters may be increased at the same time.

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Synthesis of Polypyrrole Using Ammonium Peroxy Disulfate (APS) as Oxidant Together with Some Dopants for Use in Gas Sensors

Cited by 15 publications

References 29 publications

Synthesis, characterization and DC conductivity studies of polypyrrole/copper zinc iron oxide nanocomposites

Synthesis, characterization and DC conductivity studies of polypyrrole/copper zinc iron oxide nanocomposites

Characterization and Evaluation of Activation Energy for Dc Conductivity of Polypyrrole/Nickel Zinc Iron Oxide Nanocomposites

Tuning of the Seebeck Coefficient and the Electrical and Thermal Conductivity of Hybrid Materials Based on Polypyrrole and Bismuth Nanowires

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