A Better Understanding of the Very Low-Pressure Plasma Polymerization of Aniline by Optical Emission Spectroscopy Analysis

Ndiaye, Abdoul Aziz; Lacoste, A.; Bès, A.; Zaitsev, Andrii; Poncin-Epaillard, Fabienne; Debarnot, Dominique

doi:10.1007/s11090-018-9901-7

Cited by 7 publications

(8 citation statements)

References 32 publications

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“…Hydrogen Balmer line of H α corresponding to 656.3 nm also indicates a dissociation of liquid aniline monomer. Multiple excited Ar lines are observed from 698 to 854 nm due to the Ar gas bubble injected to ignite plasma [32,33,34].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a Polyaniline Nanoparticle Using a Solution Plasma Process with an Ar Gas Bubble Channel

et al. 2019

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This work researched polymerization of liquid aniline monomer by solution plasma with a gas bubble channel and investigated characteristics of solution plasma and polyaniline (PANI). The injected gas bubble channel in the proposed solution plasma process (SPP) played a significant role in producing a stable discharge in liquid aniline monomer at a low voltage and furthermore enhancing the contact surface area between liquid aniline monomer and plasma, thereby achieving polymerization on the boundary of the liquid aniline monomer and plasma. Solution plasma properties were analyzed with voltage–current, optical emission spectroscopy, and high-speed camera. Conductivity, percentage yield, and firing voltage of PANI nanoparticle dispersed solution were measured. To investigate the characteristics of synthesized PANI nanoparticles, field emission scanning electron microscopy, dynamic light scattering, transmission electron microscopy, selective area electron diffraction (SAED) pattern, Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography, 1H-nuclear magnetic resonance (1H-NMR), and X-ray photo spectroscopy (XPS) were examined. The FTIR, 1H-NMR, and XPS analysis showed the PANI characteristic peaks with evidence that some quinoid and benzene rings were broken by the solution plasma process with a gas bubble channel. The results indicate that PANI nanoparticles have a spherical shape with a size between 25 and 35 nm. The SAED pattern shows the amorphous pattern.

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Section: Resultsmentioning

confidence: 99%

Synthesis of a Polyaniline Nanoparticle Using a Solution Plasma Process with an Ar Gas Bubble Channel

et al. 2019

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“…Molecular emission peaks of CN and C 2 are observed, which are related to excitation or dissociation of liquid aniline monomer induced due to the impact of electrons. The main CN peak is 386 nm, while the CN violet system is 359 nm [ 31 ]. The CN emission spectra refer to the connection of the benzene ring with an amine group.…”

Section: Resultsmentioning

confidence: 99%

“…Consequently, as shown in Figure 4 , the emission peaks of C 2 in the DBD structure are observed to be significantly reduced compared to those of C 2 in the DC structure, indicating that carbonization of liquid aniline monomers could be significantly reduced due to low temperature DBD. Furthermore, in the DBD structure, there is no hydrogen Balmer line of H corresponding to 656.3 nm indicating dissociation of liquid aniline monomers [ 31 ]. These results confirm that the proposed DBD structure can significantly suppress carbonization.…”

Section: Resultsmentioning

confidence: 99%

Effects of a Dielectric Barrier Discharge (DBD) on Characteristics of Polyaniline Nanoparticles Synthesized by a Solution Plasma Process with an Ar Gas Bubble Channel

Shin

Jung

et al. 2020

Polymers

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The quality of polyaniline nanoparticles (PANI NPs) synthesized in plasma polymerization depends on the discharge characteristics of a solution plasma process (SPP). In this paper, the low temperature dielectric barrier discharge (DBD) is introduced to minimize the destruction of aniline molecules induced by the direct current (DC) spark discharge. By adopting the new electrode structure coupled with a gas channel, a low temperature DBD is successfully implemented in a SPP, for the first time, thus inducing an effective interaction between the Ar plasma and aniline monomer. We examine the effects of a low temperature DBD on characteristics of polyaniline nanoparticles synthesized by a SPP with an Ar gas bubble channel. As a result, both carbonization of aniline monomer and erosion of the electrode are significantly reduced, which is confirmed by analyses of the synthesized PANI NPs.

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“…A variety of properties that conductive polyaniline (PANI) films demonstrate, from electric conductivity and magnetization to photoelectricity and gas permeability, define a wide range of their practical application [1,2]. PANI films synthesis technique based on electrochemical polymerization of aniline with doping is the most widespread one, as it is the method that ensures the minimum impurities in the final material [1 -3].…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, there are two issues related to the reproducibility of PANI properties and treatment of powder being synthesized as a result of oxidative polymerization of aniline. In particular, functionalization of the initial monomer solves these two problems [2,4]. There are other ways to obtain conductive PANI film for practical application that are based either on the galvanic deposition of aniline monomer directly on electrodes, or vacuum deposition methods using a Knudsen effusion cell [4].…”

Section: Introductionmentioning

confidence: 99%

Plasmochemical Method of Polyaniline Film Obtained

Данилаев

Куклин

Sidorov

2022

J. Phys.: Conf. Ser.

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The results of the polymer film investigation are considered in that paper. These films are obtained in atmospheric pressure barrier discharge from aniline with simultaneous generation of carbon particles in the films. It is demonstrated that the structure of these films corresponds to one of the amorphous polymers. Carbon particles produce agglomerates with a concentration that slightly depends on the discharge energy density. The authors show that the conductivity of aniline films with carbon particles mainly depends on water saturation.

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A Better Understanding of the Very Low-Pressure Plasma Polymerization of Aniline by Optical Emission Spectroscopy Analysis

Cited by 7 publications

References 32 publications

Synthesis of a Polyaniline Nanoparticle Using a Solution Plasma Process with an Ar Gas Bubble Channel

Synthesis of a Polyaniline Nanoparticle Using a Solution Plasma Process with an Ar Gas Bubble Channel

Effects of a Dielectric Barrier Discharge (DBD) on Characteristics of Polyaniline Nanoparticles Synthesized by a Solution Plasma Process with an Ar Gas Bubble Channel

Plasmochemical Method of Polyaniline Film Obtained

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