Size variation of polyaniline nanoparticles dispersed in polyvinyl alcohol matrix

Bhadra, Jolly; Sarkar, D.

doi:10.1007/s12034-010-0079-8

Cited by 39 publications

(21 citation statements)

References 31 publications

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“…Following the literature data [19,20], R c was assumed to be equal to 1.045·10 -4 mm (see the description of numerical experiments in [21] for more details), and the side length of the domain L was assumed to be equal to 0.01 mm.…”

Section: Monte Carlo Algorithm and Simulationsmentioning

confidence: 99%

Percolation thresholds of 3D all-sided percolation clusters in non-cubic domains

Katunin

2016

J. Appl. Math. Comput. Mech.

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Abstract. The critical 3D all-sided percolation clusters in aL×L×L and aL×aL×L threedimensional domains with a side length L and an aspect ratio a obtained from continuous percolation problem were analysed in this paper. The simulations of continuous percolation were performed in parallelepiped domains starting from a = 1 and ending at a = 10 using the Monte Carlo algorithm. The resulting percolation thresholds for the simulated domains and percolation clusters as well as variability of number of cells in a domain and in a percolation cluster with variation of a were analysed. The obtained results are useful for evaluation of a content of electrically conducting particles in the dielectric matrix of a composite developed for aircraft lightning strike protection purposes.

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Section: Monte Carlo Algorithm and Simulationsmentioning

confidence: 99%

Percolation thresholds of 3D all-sided percolation clusters in non-cubic domains

Katunin

2016

J. Appl. Math. Comput. Mech.

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“…Some of these techniques are gamma radiation doping, chemical oxidative polymerization, electrochemical polymerization, sol-gel polymerization, Yang, M.Z. et al (2011), dispersion polymerization Bhadra, J. and Sarkar, D., (2010). The other way to increase the processibility of the Polyaniline is to use inorganic filler, such as Titanium Di-oxide, Wu, T. M. et al (2005), Sainz, R. et al (2005) and Wei, Z. X. et al (2003) that has excellent physical and chemical properties and has been used in coating, sensor, solar cell and photo catalyst applications Baibarac, M. et al (2003), which can be added into the polymer matrix as second phase.…”

Section: Introductionmentioning

confidence: 99%

Effect of fabrication technique on microstructure and electrical conductivity of polyaniline-TiO 2 -PVA composite material

Arora

Mandal

Sharma

et al. 2014

Procedia Materials Science

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The aim of this workis to study the microstructure and D.C electrical conductivity of polyaniline-TiO 2 -poly-vinyl alcohol polymeric composite material synthesized by two methods. The first method of synthesis involved mixing of 40 wt% blendedpowders of polyaniline and TiO 2 micro particles in aqueous solution of PVA and the second method used 'in situ' deposition technique in which nano particle sized fine grade anatase TiO 2 powder (approximately 50 nm average particle size) was placed in the polymerization reaction mixture of aniline, which resulted in polyaniline being deposited on the surface of nano-TiO 2 particles forming a core-shell structure. 40 wt% of this composite polymer was then directly blendedwith aqueous solution of poly vinyl-alcohol, resulting in composite polymer of polyaniline-TiO2-poly-vinyl alcohol. The microstructural studies and electrical conductivity results shows that the second method of fabrication not only gives continuous fibrous structure to the conducting polymer without any agglomeration of TiO 2 , whereas in first method agglomeration of TiO2 results in conducting and non-conducting zone. It gives films with higher D.C electrical conductivity, in comparison to first method, which increases with increasing voltage.

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“…Figure (A) (d) implies a peak at 2θ = 19 related to overlapped peaks of PVA and PANI and the new peaks at 2θ = 26, 32, 39 related to Ag oxides (AgO and Ag 2 O) structures . In the absence of acid medium (pH = 5.5), the peak centered at 2θ = 19 related to overlapped peaks of PANI and PVA and the peaks of Ag NPs were appeared at 2θ = 38 and 44.5 with low intensity [Figure (B)]. XRD results show that in different acidic solutions, positively‐charged AgNPs can be appeared as Ag, AgCl, AgO, and Ag 2 O NPs and the pH of reaction has most important effect on the structure of obtained composites.…”

Section: Resultsmentioning

confidence: 99%

“…Polyvinyl alcohol (PVA), a water soluble hydrophilic polymer, is widely used in industries owing to its excellent chemical and physical properties, nontoxicity, excellent chemical resistance, good film formation capacity, biocompatibility and high crystal modulus. On the other hand the existence of PVA in the preparation of PANI composite increases crystallinity and stability in PANI and also decreases the size of PANI dispersion NPs . To the best of knowledge, studies on the synthesizing of AgCl/PANI nanocomposite in PVA matrix through chemical polymerization are relatively rare.…”

Section: Introductionmentioning

confidence: 99%

Preparation of agcl/polyaniline nanocomposite in polyvinylalcohol matrix and its electrocatalytic activity

Fathalipour

Massoumi

2015

J of Applied Polymer Sci

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AgCl/polyaniline (PANI) nanocomposite was successfully synthesized in polyvinyl alcohol (PVA) matrix via a two-stage process. Firstly, positively-charged Ag nanoparticles (NPs) were prepared in the presence of 4-aminothiophenole (4-ATP) as stabilizer. Then, polymerization of aniline was carried out in PVA matrix in the presence of Ag NPs, HCl, and ammonium persulfate as oxidant. HCl solution played an important role in the preparation of resulted nanocomposite. Removal or changing of acidic medium to camphorsulfonic acid influenced on the structure and morphology of obtained composites. The composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, ultraviolet-visible spectra, and Fourier transform infrared spectroscopy. Moreover, AgCl/PANI/PVA nanocomposite was immobilized on the surface of a glassy carbon electrode and showed enhanced electrocatalytic activity for the oxidation of dopamine (DA) in a neutral solution. The peak currents of differential pulse voltammograms of DA increased linearly with concentration in the ranges of 80-250 lM DA and the detection limit for DA was 17.2 lM.

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Size variation of polyaniline nanoparticles dispersed in polyvinyl alcohol matrix

Cited by 39 publications

References 31 publications

Percolation thresholds of 3D all-sided percolation clusters in non-cubic domains

Percolation thresholds of 3D all-sided percolation clusters in non-cubic domains

Effect of fabrication technique on microstructure and electrical conductivity of polyaniline-TiO 2 -PVA composite material

Preparation of agcl/polyaniline nanocomposite in polyvinylalcohol matrix and its electrocatalytic activity

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