Studies on highly conducting Polypyrrole/Fe<sub>3</sub>O<sub>4</sub> nanocomposites

Mathad, Jyotsna Kiran; Rao, R.M.V.G.K.

doi:10.1002/pc.21167

Cited by 10 publications

(5 citation statements)

References 35 publications

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“…SnO 2 , MnO 2 , V 2 O 5 , TiO 2 , fly ash composites, Fe 3 O 4 , ZrO 2 , etc. combine in some special fashion with the conducting polymers to give rise to the composites 17–23. In almost all the cases some specific nature of association between the two components has been observed.…”

Section: Introductionmentioning

confidence: 97%

Synthesis, characterization, and conductivity studies of polypyrrole/copper sulfide nanocomposites

Ramesan

2012

J of Applied Polymer Sci

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Nanocomposites of polypyrrole (PPy) containing copper sulfide (CuS) were synthesized by an in situ chemical oxidative polymerization. The nanocomposites were characterized by FTIR, SEM, XRD, DSC, TGA, and conductivity studies. The FTIR spectra ascertained the chemical interlinking of polypyrole with metal sulfide nanoparticles. Morphological analysis showed that the nanoparticles were uniformly covering the entire substrate. The XRD pattern reveals that the nanoparticle incorporated polypyrrole showed a crystalline nature and the crystallinity of the polymer increases with increase in concentration of CuS nanoparticles. From DSC, an increase in glass transition temperature shows the increased orderness in the polymer composite than in the pure polypyrrole. Thermal analysis (TGA) of the composite showed a progressive increase in the thermal stability with increase in content of CuS. The frequency dependent electrical properties (a.c. conductivity) of the nanocomposites were higher than that of polypyrrole. The d.c. electrical conductivity increased with increase in amount of nanoparticles in the polymer matrix. The results obtained for these composites have greater scientific and technological interest.

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Section: Introductionmentioning

confidence: 97%

Synthesis, characterization, and conductivity studies of polypyrrole/copper sulfide nanocomposites

Ramesan

2012

J of Applied Polymer Sci

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“…A pure PPy sample has been synthesized by in-situ polymerization of pyrrole monomers (using FeCl3.6H2O as an oxidizing agent) [18,23]. 0.08M pyrrole has been dissolved in 25mm 3 of acetone and stirred for 30 minutes.…”

Section: Preparation Of Polypyrrolementioning

confidence: 99%

Preparation and Magnetic Properties of Cu Ni Al Ferrite Nanoparticles and Polypyrrole/Cu0.5Ni0.5Al0.3Fe1.7O4 Composite

2020

Egyptian Journal of Solids

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Nanostructure copper nickel aluminum ferrite samples (Cu0.5Ni0.5AlxFe2-xO4, x=0, 0.1, 0.2, 0.3 and 0.4) have been synthesized by using the citrate precursor technique. Then, a PPy/Cu0.5Ni0.5Al0.3Fe1.7O4 composite sample has been prepared by polymerization of polypyrrole (PPy) monomer in the presence of Cu0.5Ni0.5Al0.3Fe1.7O4 nanoparticles. The characterizing techniques used in the present investigation are X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FTIR) and vibrating sample magnetometer (VSM) measurements. The results have revealed the pure formation of the desired ferrite nanoparticles. The formation of PPy has been evidenced by FTIR. The lattice constant and the theoretical density Dx have been found to decrease by increasing the aluminum content, whereas the Debye temperature and the elastic moduli have increased. The SEM image of the composite has obviously clarified that the ferrite particles are dispersed nearly homogeneously in the polymer matrix. The hysteresis loops of all samples have proved that they can be classified as soft magnetic materials. Moreover, the saturation magnetization Ms of the ferrite series has been found to decrease with the increase in Al content and also has further decreased in the composite as expected. The coercivity Hc has low values in general. Moreover, its value of the composite is higher compared to that of the pure Cu Ni ferrite because the PPy increases the surface anisotropy, whereas it is almost equal to the coercivity of the Al containing ferrites, indicating some similarity of introducing Al and PPy to the material from the perspective of interruption of the ferrimagnetic order. The low coercivity of the samples are required in important devices which depend on soft magnetic materials such as switching devices and high frequency transformers.

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“…There are reports on the studies of magnetic and electrical properties of conductive polymer composites based heterocyclic groups containing polymers. [11][12][13][14][15] Heterocyclic conjugated polymers having a nitrogen moiety have interesting properties because of their easy synthesis compared to other heteroatoms containing polymers. Polyindole (PIN) shows poor solubility, thermal and mechanical properties among the conducting polymers.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, magnetoelectric properties and gas sensing application of Poly(anthranilic acid-co-indole)/ magnetite nanocomposites

Jayakrishnan¹,

Jithin²,

Meera³

et al. 2022

Journal of Thermoplastic Composite Materials

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The increased demand for the discovery of new conducting materials encourages the researchers for the development of advanced electronic technologies. In the present study, nanocomposites of poly (anthranilic acid- co-indole)/(PANA- C o-PIN) and magnetite nanoparticles (Fe3O4) were prepared via a one-step polymerization method and evaluated by various analytical techniques. The Fourier transform infrared spectroscopy (FT-IR) spectra proved the presence of Fe3O4 nanofillers in the copolymer at 507 cm−1. Optical characterization (UV-Vis) shows a clear blueshift indicating strong interactions between Fe3O4 and PANA- C o-PIN. The X-Ray diffraction (XRD) patterns revealed an increase in crystallinity due to the well dispersed nanoparticles. FESEM images evidenced the morphological changes caused by the uniform dispersion of nanoparticles in the copolymer matrix. The nano-dispersion of magnetite nanoparticles in the copolymer was confirmed by High-resolution transmission electron microscopy analysis. Magnetic properties of nanocomposites obtained from a vibrating sample magnetometer (VSM) showed an increase in the saturation of magnetism with the addition of nanoparticles and the composite exhibited superparamagnetic behaviour. The thermal stability and glass transition temperature of the nanocomposites were greatly enhanced with the addition of nanoparticles and were determined with the help of Thermogravimetric Analysis (TGA) and Differential scanning calorimetry (DSC) respectively. Filler-dependent electrical properties showed a linearly increased DC conductivity with the addition of nanoparticles. The impedance analysis showed that the AC conductivity and dielectric properties of the nanocomposites were higher than the copolymer and the maximum electrical properties were observed for 15 wt.% of composites. The ammonia gas sensing performance of copolymer composite indicates the easy access of gas molecules to the sensor surface through the metal oxide nanoparticles. The synthesized copolymer nanocomposites showed high sensitivity and fast response to ammonia gas. The prepared composite with good thermal properties, dielectric constant, ammonia gas sensing and magnetoelectric properties is a promising candidate for use in nanoelectronics devices.

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Studies on highly conducting Polypyrrole/Fe₃O₄ nanocomposites

Cited by 10 publications

References 35 publications

Synthesis, characterization, and conductivity studies of polypyrrole/copper sulfide nanocomposites

Synthesis, characterization, and conductivity studies of polypyrrole/copper sulfide nanocomposites

Preparation and Magnetic Properties of Cu Ni Al Ferrite Nanoparticles and Polypyrrole/Cu0.5Ni0.5Al0.3Fe1.7O4 Composite

Synthesis, characterization, magnetoelectric properties and gas sensing application of Poly(anthranilic acid-co-indole)/ magnetite nanocomposites

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Studies on highly conducting Polypyrrole/Fe3O4 nanocomposites

Cited by 10 publications

References 35 publications

Synthesis, characterization, and conductivity studies of polypyrrole/copper sulfide nanocomposites

Synthesis, characterization, and conductivity studies of polypyrrole/copper sulfide nanocomposites

Preparation and Magnetic Properties of Cu Ni Al Ferrite Nanoparticles and Polypyrrole/Cu0.5Ni0.5Al0.3Fe1.7O4 Composite

Synthesis, characterization, magnetoelectric properties and gas sensing application of Poly(anthranilic acid-co-indole)/ magnetite nanocomposites

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Studies on highly conducting Polypyrrole/Fe₃O₄ nanocomposites