Ac conductivity investigation of polyindole/poly(vinyl acetate) composites

Bhagat, D. J.; Dhokane, G. R.

doi:10.1007/s10854-016-5319-2

Cited by 8 publications

(6 citation statements)

References 16 publications

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“…Temperature had significant effect on the conductivity of PIN and its composites, Bhagat and Dhokane, observe increase in a conductivity with increasing temperature for PIN/PVAc composites, attributed to orientation of thermally active PIN and its composite to overcome the conduction band [40]. Perchlorate-doped PIN and self-doped PIN-5-carboxylic acid (5-PINC) were found to have decreased electrical conductivity with time due to the loss of dopant (> 450 K) and polymer chain conjugation (> 750 K).…”

Section: Effect Of Temperature Of Conductivitymentioning

confidence: 95%

“…With decreasing fiber diameter (347-186 nm), there is increased specific area and hence higher electronic conductivity due to higher charge transfer and alternate electronic paths [66]. PIN/ PVAc shows cauliflower morph, and the increasing oxidant (FeCl 3 , 20-40%) concentration effects the morphology of the resulting composites as by altering the rate of polymerization also occurs, besides the AC conductivity of the composite material was observed to increase up to 1.88 × 10 −6 S cm −1 at 30% of oxidant added and then considerably decrease on further addition of oxidant [40]. Zhijiang et al discovered electropolymerized porous PIN nanofibers of smooth, round (250 nm), and low molecular weight (due to high electrical strength and sonication in ACN) which were found to have higher electrical conductivity compared to PIN films.…”

Section: Surface Morphology Affecting Conductancementioning

confidence: 98%

“…In the CPs, due to lack of perpetual dipoles, the charge trapping is found to be difficult; thus, the localized motion acts as electrical dipole under applied electrical filed, where the charge carriers are allowed to carry the charge to contiguous sites to produce a network throughout the dimension of the material [40].…”

Section: Electrical and Electrochemical Performance Of Pinmentioning

confidence: 99%

“…PIN was added to polyvinyl acetate (PVAc) to generate PIN/PVAc composite, the composite was further doped with Cu (CuCl 2 , as oxidant in 20-40%), and it was observed that the conductivity of the composite material was proportional to the applied frequency, i.e., from 0.98 × 10 −5 to 2.97 × 10 −5 S cm −1 at 1 kHz and 1 MHz, respectively (for 30% dopant). These results may be attributed to favourable polarization of the present charge transporters and conjugation present in PIN [40]. PIN/PVAc composite oxidised with FeCl 3 (10-50%) was considered for DC conductivity in the temperature range of 35-110 °C.…”

Section: Pin-other Cp Copolymersmentioning

confidence: 99%

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Critical analysis of polyindole and its composites in supercapacitor application

Mudila

Prasher

Kumar

et al. 2019

Mater Renew Sustain Energy

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Polyindole-based hybrid composites are being recognized as a promising candidate to be used in energy storage field along with other conjugated organic polymers. Polyindoles themselves are affected with low electrical and electrochemical conductivity; nevertheless, high redox activity, tunable electrical conductivity, significant thermal stability, slow degradation rate, and possible blending property give them upper hand to be used as a good contender. Certain factors viz. electrolyte, concentration, morphology, pH, temperature, etc., are major components affecting performance of Polyindole and its composites. This assessment recapitulates the position of Polyindole and its hybrid composite to be used as energy harvest material; in addition, this evaluation also pronounces the future aspect of the hybrids.

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Section: Effect Of Temperature Of Conductivitymentioning

confidence: 95%

Section: Surface Morphology Affecting Conductancementioning

confidence: 98%

Section: Electrical and Electrochemical Performance Of Pinmentioning

confidence: 99%

Section: Pin-other Cp Copolymersmentioning

confidence: 99%

See 2 more Smart Citations

Critical analysis of polyindole and its composites in supercapacitor application

Mudila

Prasher

Kumar

et al. 2019

Mater Renew Sustain Energy

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“…But once the frequency reaches a particular value, the AC conductivity further enhanced with the frequency by the formation of polarons and bipolarons. 30 The charge transport (polarons and bipolarons) through the conjugated polymeric system of PPy and charge hopping between the chains is responsible for the conductivity in PPy and its composites. 31…”

Section: Resultsmentioning

confidence: 99%

Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al₂O₃ hybrid nanocomposites

Sankar

Parvathi

Ramesan

2020

High Performance Polymers

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The present work focused on the synthesis of polypyrrole (PPy) wrapped nano copper-alumina (Cu-Al2O3) composite by an in situ polymerization of pyrrole in the presence of Cu-Al2O3 nanoparticles. The polymerized samples were systematically characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, scanning electron microscope (SEM), high-resolution transmission electron microscope (HR-TEM), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The properties such as AC and DC conductivity, dielectric constant, and ammonia gas sensing performance of PPy/Cu-Al2O3 composites were investigated in detail as a function of Cu-Al2O3 content. The FTIR spectra showed the existence of sharp and resolved infrared bands of nanoparticles in the PPy chain. The presence of the crystalline peaks of Cu-Al2O3 in the PPy matrix was confirmed from the XRD analysis. SEM images revealed the homogenous growth of Cu-Al2O3 in the polymer with the formation of spherically shaped particles. The HR-TEM observation showed that Cu-Al2O3 particles were dispersed at a nanometer level in the nanocomposites with a width of 30–60 nm. The glass transition temperature of composites obtained from DSC was found to be increased with increase in the content of nanoparticles. TGA analysis proved that the nano Cu-Al2O3 in the content in the composites acted as a mass transport barrier that retards the degradation of the product. The AC conductivity and dielectric constant of the nanocomposite showed that the maximum electrical properties were observed for the composite with 5 weight percentage loading of Cu-Al2O3. DC conductivity showed that the PPy/Cu-Al2O3 composites have higher electrical conductivity than PPy. The ammonia gas sensing property of the composites was significantly enhanced by the addition of Cu-Al2O3 nanoparticles. Therefore, the improved properties of synthesized PPy/Cu-Al2O3 nanocomposite can be useful for developing functional composite material for the fabrication of sensors, electronic devices, and high energy storage capacitors.

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Nano zinc ferrite filler incorporated polyindole/poly(vinyl alcohol) blend: Preparation, characterization, and investigation of electrical properties

et al. 2018

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The present work deals with the reinforcement and the resulting property enhancement of polyindole (PIN)/poly(vinyl alcohol) (PVA) blend using zinc ferrite (ZnFe2O4) nanoparticles. The polymer blend nanocomposite samples have been prepared using a simple in situ polymerization method. The structural changes in the polymer blend resulting from its interaction with ZnFe2O4 have been identified by Fourier transform infrared (FTIR) spectroscopy and X‐ray diffraction (XRD) studies. The FTIR spectra of blend nanocomposite showed the presence of ZnFe2O4 nanoparticles at 580 cm−1. The chemical interactions between the polymer and ZnFe2O4 have been confirmed by the shift in the position of FTIR peaks. The XRD results indicate the increase in the crystalline nature of the polymer blend with the incorporation of ZnFe2O4 nanoparticles into the blend. Scanning electron microscopy photographs of the nanocomposites show the dispersion of nanoparticles in PIN/PVA blend, while transmission electron microscopy images reveal the presence of spherically shaped nanoparticles in the polymer blend with an average size of 15 nm. The glass transition temperature of polymer blend composite has been shifted to a higher value, and thermal stability of the polymer blend improved with the addition of ZnFe2O4 nanoparticles. The incorporation of ZnFe2O4 nanoparticles in the PIN/PVA blend matrix leads to a significant improvement in overall mechanical properties, AC and DC conductivity. The dielectric properties are found to be higher for ZnFe2O4‐reinforced blend systems than the pure blend system due to polarization exerted by the incorporation of nanoparticles.

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Ac conductivity investigation of polyindole/poly(vinyl acetate) composites

Cited by 8 publications

References 16 publications

Critical analysis of polyindole and its composites in supercapacitor application

Critical analysis of polyindole and its composites in supercapacitor application

Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al₂O₃ hybrid nanocomposites

Nano zinc ferrite filler incorporated polyindole/poly(vinyl alcohol) blend: Preparation, characterization, and investigation of electrical properties

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Ac conductivity investigation of polyindole/poly(vinyl acetate) composites

Cited by 8 publications

References 16 publications

Critical analysis of polyindole and its composites in supercapacitor application

Critical analysis of polyindole and its composites in supercapacitor application

Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al2O3 hybrid nanocomposites

Nano zinc ferrite filler incorporated polyindole/poly(vinyl alcohol) blend: Preparation, characterization, and investigation of electrical properties

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Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al₂O₃ hybrid nanocomposites