Electrical properties of polyaniline‐manganese chloride composites

Özkazanç, Ersel; Zor, Sibel; Özkazanç, Hatice; Abaci, Ufuk

doi:10.1002/pen.21866

Cited by 10 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, by looking at these results, it is possible to say that the most suitable model is CBH ( Eq. ):

s = 1 - \frac{6 k_{normalB} T}{W_{normalH} + k_{normalB} T ln (ω τ_{0})}

where W H is the activation energy, k B is Boltzmann's constant (

k_{normalB} = 86.13 {μ eVK}^{- 1}

), τ 0 is the relaxation time, and T is the temperature . For large values of W H /k B T, s is independent of frequency and hence, the slope of the graph of 1‐s vs. T would be equal to 6 k B /W H (Fig.…”

Section: Resultsmentioning

confidence: 99%

Characterization and charge transfer mechanism of PIN–cdse nanocomposites

Özkazanç

2015

Polymer Composites

Self Cite

View full text Add to dashboard Cite

This paper reports structural, thermal, and temperature‐dependent dielectric properties of polyindole–cadmium selenide (PIN–CdSe) nanocomposites. PIN and its nanocomposites were synthesized via in situ chemical oxidative polymerization method. Samples were characterized by Fourier transform infrared spectroscopy (FT‐IR), X‐ray diffraction (XRD), scanning electron microscopy with energy dispersive X‐ray (SEM/EDX), atomic force microscope, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Dielectric properties were analyzed as a function of temperature. FT‐IR spectroscopy indicated that both NH and aromatic CC bonds were affected more by doping process. Significant structural differences were observed in XRD and SEM analyses of PIN and its nanocomposites. Both XRD and DSC measurements revealed that crystallinity of the PIN increases to a certain degree with increasing doping level. Thermogravimetric analysis showed that addition of CdSe decreased degradation temperature of the PIN. Conductivity measurements investigated by universal power law indicated that the charge transport mechanism of all the samples is consistent with correlated barrier hopping model. POLYM. COMPOS., 37:3057–3065, 2016. © 2015 Society of Plastics Engineers

show abstract

“…Hence, by looking at these results, it is possible to say that the most suitable model is CBH ( Eq. ):

s = 1 - \frac{6 k_{normalB} T}{W_{normalH} + k_{normalB} T ln (ω τ_{0})}

where W H is the activation energy, k B is Boltzmann's constant (

k_{normalB} = 86.13 {μ eVK}^{- 1}

Section: Resultsmentioning

confidence: 99%

Characterization and charge transfer mechanism of PIN–cdse nanocomposites

Özkazanç

2015

Polymer Composites

Self Cite

View full text Add to dashboard Cite

show abstract

“…[ 21 ] Like many other polymers, the electrical properties of PANI are sensitively dependent on its oxidation state and protonation states [ 22 ] of the emeraldine salt. [ 23 ] Polythiophene also received much attention since 1980 because of exceptional environmental stability, [ 24 ] thermal stability, [ 6 ] optical and electrical properties that offer better conductivity, photoconductivity, and electrochromism, [ 25 ] and so on. Therefore, it has a wide range of applications in anticorrosive coatings, [ 26 ] super capacitors, [ 27 ] light emitting diodes, [ 28 ] DNA detection, [ 6 ] and so on.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of polyaniline‐ and polythiophene‐based copolymer and its nanocomposite suitable for electro‐optical devices

et al. 2020

View full text Add to dashboard Cite

Doped polyaniline (PANI), doped polythiophene and their copolymers (by interfacial and aqueous polymerization) with monomers at 50:50 ratio has been synthesized and are characterised by X-ray diffraction (XRD), thermo gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) measurements. The copolymer synthesized by interfacial polymerization is mixed with copper oxide nanoparticle synthesized chemically in lab at 0.2% loading. XRD measurement showed no peak for PANI and polythiophene, which confirms amorphous structure of the two. However, clear peak for copper oxide nanoparticle at 2θ = 36.45 and multiple peaks for the copolymer (interfacial polymerization) and the copolymer Nanocomposite signifies crystalline structure. TGA results show that the stability of copolymer prepared by interfacial polymerization lies in between the PANI and polythiophene. FTIR spectroscopy confirms that both aniline and thiophene units are present in the interfacial copolymer. Further the monomers are chemically linked in the copolymer (by interfacial and aqueous polymerization). The presence of peak at about 1103 cm −1 confirms the formation of N S bonding by reaction in between aniline and thiophene in the interfacial copolymer. The uniform distribution of nanoparticles in copolymer (interfacial polymerization) matrix have been confirmed from TEM images. The electrical properties of polymers, copolymers and copper oxide Nanocomposite are studied from which it is found that the copolymer have a synergistic effect on the improvement of conductivity when compared with the individual polymers. The 0.2% loading of copper oxide nanoparticles further improves the conductivity of the interfacial copolymer by approximate 15.24-fold.

show abstract

“…Depending on the oxidation level, PANI is available in various forms such as leucoemeraldine base (colorless), emeraldine base (blue), pernigraniline base (violet), and emeraldine salt (ES) (green) . Among the above forms of PANI, only the ES form (partially oxidized and protonated form) is electrically conducting due to the presence of cation radicals in its structure and it can be synthesized by electrochemical or chemical oxidation of aniline in an acidic medium as a bulk powder or film . Since the ES form of PANI consists of equal numbers of protonated benzenoid and quinoid units, the balance of oxidized and reduced units in the polymer chains is very important for its electrical conductivity .…”

Section: Introductionmentioning

confidence: 99%

Multifunctional polyaniline/chloroplatinic acid composite material: Characterization and potential applications

Özkazanç

2018

Polymer Engineering & Sci

Self Cite

View full text Add to dashboard Cite

Polyaniline/chloroplatinic acid (PANI/H 2 PtCl 6 .H 2 O) composite is synthesized via in situ oxidative polymerization method. Fourier transform infrared, ultraviolet-visible, energy-dispersive X-ray, and Thermogravimetric techniques are used for the characterization studies. The surface morphology of the samples is investigated by scanning electron microscopy and atomic force microscopy. Dielectric measurements are carried out depending on the temperature. The dispersion process increases the thermal degradation temperature of PANI by about 608C, while reducing the optical energy gap of PANI from 1.99 to 1.76 eV. Chloroplatinic acid significantly increases the agglomeration and grain size (up to 10 lm) on the surface of the PANI. Gas sensor measurements show that Polyaniline/chloroplatinic acid composite can be a candidate for ethanol detection. With the dispersion process, the electrical conductivity of PANI increases almost 2.5 times. The charge transport mechanism of the samples is consistent with electron tunneling model up to 978C and with small polaron tunneling model at higher temperatures. The hopping distance of the charge carriers reduced to 4.82 from 5.30 nm with dispersion process. Experimental results reveal that PANI/chloroplatinic acid composite can be a rather suitable multifunctional material for various applications such as gas sensors, optoelectronic and semiconductor devices. POLYM. ENG. SCI., 00:000-000, 2018.

show abstract

Electrical properties of polyaniline‐manganese chloride composites

Cited by 10 publications

References 27 publications

Characterization and charge transfer mechanism of PIN–cdse nanocomposites

Characterization and charge transfer mechanism of PIN–cdse nanocomposites

Preparation and characterization of polyaniline‐ and polythiophene‐based copolymer and its nanocomposite suitable for electro‐optical devices

Multifunctional polyaniline/chloroplatinic acid composite material: Characterization and potential applications

Contact Info

Product

Resources

About