Surface modification of high density polyethylene and polycarbonate by atmospheric pressure cold argon/oxygen plasma jet

Shrestha, Rajendra; Gurung, Jyoti P; Shrestha, Ashwinee Kumar; Subedi, Deepak Prasad

doi:10.1201/9781315365947-30

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…The results of spectroscopic measurements presented in Figure 5b reveal that the electron density remains relatively constant in the range of 1.7×10 21 to 2.6×10 21 m -3 for 8 W to 30 W discharge power, which is notably higher than that reported for similar argon APPJs [13,[33][34][35]. This discrepancy can be attributed to the presence of a conductive liquid target in contact with the plasma discharge.…”

Section: The Effect Of Discharge Power On Reactor Performancementioning

confidence: 69%

Characterization and Treatment Performance of an Atmospheric Pressure Plasma Jet-Operated Spinning Disc Reactor for the Treatment of Rhodamine B Dye

Ganzallo,

Su,

Yatom

et al. 2023

Plasma Chem Plasma Process

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A spinning disc reactor is a design widely adopted in chemical process industries because of its capability to produce thin fast-moving films, which enhance the diffusive and convective transport of solutes.However, this configuration has yet to be explored for plasma-based water treatment, where mass transport limitations in the bulk liquid often limit reactor degradation efficiency. This study presents a novel plasma spinning disc reactor (PSDR) for degrading rhodamine B dye and characterizes its performance. The impact of discharge power, gas flowrate, liquid flowrate, disc rotational speed, and bulk liquid concentration on dye degradation was investigated. The results indicate that mass transport limitations within the fluid were the primary limitation to efficient degradation. Higher degradation rates were achieved primarily through changes in the plasma area, fluid velocity across the disc, and increased bulk liquid concentration, resulting in enhanced contact between the solute and the plasma. Residence time, a function of plasma area and fluid velocity, was used to describe and predict degradation rates on the PSDR using a 1-D fluid element model, which indicated that lower residence times favored dye degradation, especially for systems limited by small plasma areas.

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Section: The Effect Of Discharge Power On Reactor Performancementioning

confidence: 69%

Characterization and Treatment Performance of an Atmospheric Pressure Plasma Jet-Operated Spinning Disc Reactor for the Treatment of Rhodamine B Dye

Ganzallo,

Su,

Yatom

et al. 2023

Plasma Chem Plasma Process

View full text Add to dashboard Cite

show abstract

“…Non-equilibrium plasmas can be created under atmospheric pressure discharge circumstances, with the majority of them being easily handled. These discharge plasmas can be created in a liquid state, which opens up a wider range of applications, such as in the medical, food, agricultural, and textile industries [11]. The Scientist McWhirter proposed four plasma models based on electron interaction mechanisms, local-thermal-equilibrium (LTE), stable-state corona, timedependent corona, and collision radiative models [12].…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Diagnosis of Cobalt Plasma Produced by OES Technique and Influence of Applied Voltage on Plasma Parameters

Abbas

Aadim

2023

Iraqi Journal of Science

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In this work, plasma system that operates at vacuum was designed and built using a sheet of cobalt metal for the purpose of diagnosing plasma and measuring its parameters, as it is very important to know the processes that accompany plasma generation and are closely related to them, including the electron density in the plasma and its temperature. The spectroscopic diagnosis was done by optical emission spectroscopy (OES) which relies on the calculation of the optical radiation emitted by the plasma to describe plasma parameters in the chemical, molecular, and ionic radiator's near environment, and applied to cobalt metal at vacuum D.C high voltage power supply. The results showed the rise of spectral lines intensity with increasing the applied voltage. The maximum peak of argon gas (ArI) was at the wavelength (811.5311) nm and the maximum peak of cobalt metal (CoI) was at the wavelength of 242 nm, where argon gas was used at the fifth flow per minute with variable voltages (13-21) kV. The results also achieved that the values of electron temperature rises from (0.2708-0.6649) eV with the increase in the applied voltage, as well as the electron density from (8.108-13.851)x1017cm-3 with the stability of the argon gas flow rate at 5 l/min. The length of the plasma was measured at different gas flow rates (1-5) l/min and different applied voltages (13-21) kV that were used in this diagnosis.

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“…Due to its distinctive characteristics compared to solid, liquid, and gas-phase synthesis methodologies, plasma technology is currently getting significant interest as a prominent "green" synthesis method for nanomaterials [7]. Non-thermal plasma has the potential to kill cancer cells either directly or indirectly [17]. Increased specificity and efficiency of the treatment can be achieved using conjugated or unconjugated NPs [18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Investigation of the Structural Characteristics of Zinc Oxide Nanoparticles Produced by an Atmospheric Plasma Jet

Aadim

Abbas

2023

Iraqi Journal of Science

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In this paper, ZnO NPs were prepared using D.C high-voltage and high frequency with an output of 6 kHz at two different preparation times preparation (10,12) minutes. Transmission electron microscopy (TEM) with (FE-SEM) was used to examine the homogenous, compact, and dense surface of the zinc oxide nanoparticles created with apparent grain size determined by (XRD), XRD results explain that the increase of the preparation time from 10 minutes to 12-minute caused an increase in crystallite size. In addition, FE-SEM showed that the increase in the ZnO NPs cluster distribution with particle size increases with increasing the preparation time. AFM was also utilized to determine the degree of cooperation between the surfaces of the zinc oxide nanoparticles, with having a high degree of stability by zeta potential -13.3±1.8mV at 12 minutes.

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Surface modification of high density polyethylene and polycarbonate by atmospheric pressure cold argon/oxygen plasma jet

Cited by 4 publications

References 1 publication

Characterization and Treatment Performance of an Atmospheric Pressure Plasma Jet-Operated Spinning Disc Reactor for the Treatment of Rhodamine B Dye

Characterization and Treatment Performance of an Atmospheric Pressure Plasma Jet-Operated Spinning Disc Reactor for the Treatment of Rhodamine B Dye

Spectroscopic Diagnosis of Cobalt Plasma Produced by OES Technique and Influence of Applied Voltage on Plasma Parameters

Synthesis and Investigation of the Structural Characteristics of Zinc Oxide Nanoparticles Produced by an Atmospheric Plasma Jet

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