Surface modification of polymethylmethacrylate foils using an atmospheric pressure plasma jet in presence of water vapors

Acsente, T.; Ionita, Maria Daniela; Teodorescu, Maximilian; Mărăscu, Valentina; Dinescu, G.

doi:10.1016/j.tsf.2015.12.037

Cited by 20 publications

(17 citation statements)

References 31 publications

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“…2) Q  are the rate coefficient ratios of the de-excitation and emission processes involved in the second positive and first negative systems respectively, and are given by: [15]. 2 [N ] and 2 [O ] are the atmospheric nitrogen and oxygen densities in m -3 . 2 [N ] and 2 [O ] can be calculated by using the ideal gas law from percentage of composition, i.e., …”

Section: B Modeling Of Electron Density N E and Electron Temperaturmentioning

confidence: 99%

“…2 [N ] and 2 [O ] are the atmospheric nitrogen and oxygen densities in m -3 . 2 [N ] and 2 [O ] can be calculated by using the ideal gas law from percentage of composition, i.e., …”

Section: B Modeling Of Electron Density N E and Electron Temperaturmentioning

confidence: 99%

“…In atmospheric air, DBDs are able, via ionization, to produce chemically active species such as oxygen and hydroxyl radicals. These reactive species are useful in various applications, such as surface modification [2], [3], flue gas [4] and waste water treatment [5], assisting in combustion [6], [7] and for fuel synthesis [1]. The production of these reactive species is affected by the properties of the plasma, such as the electron density, n e which is the number of electrons per unit volume produced by the discharge, and the electron temperature, T e which gives the average energy of the electrons produced by the discharge.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of an Atmospheric Air Non-thermal Plasma Device in Relation to Ozone Production

Lim¹,

Jayapalan²,

Zulkifli³

et al. 2017

IJESD

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Abstract-An atmospheric air non-thermal plasma (NTP) device is characterized in relation to ozone production. The electron density, n e , electron temperature, T e and ozone concentration are measured for three dielectric barrier discharge (DBD) geometries, i.e., ten tubes of 10 mm outer diameter (OD), six tubes of 25 mm OD, and three tubes of 40 mm OD.n e and T e are deduced using optical emission spectroscopy via the line ratio method and the ozone concentrations are measured by using an ozone meter.n e and ozone concentrations were the highest for the three tube-40 mm configuration, showing a correlation between the number of charged particles and ozone production.

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Section: B Modeling Of Electron Density N E and Electron Temperaturmentioning

confidence: 99%

“…2 [N ] and 2 [O ] are the atmospheric nitrogen and oxygen densities in m -3 . 2 [N ] and 2 [O ] can be calculated by using the ideal gas law from percentage of composition, i.e., …”

Section: B Modeling Of Electron Density N E and Electron Temperaturmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of an Atmospheric Air Non-thermal Plasma Device in Relation to Ozone Production

Lim¹,

Jayapalan²,

Zulkifli³

et al. 2017

IJESD

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show abstract

“…Several attempts have been reported in the literature using DBD plasma to improve the wettability of polymeric surfaces, since it does not deteriorate and can modify the treated surface [ 17 , 23 , 25 , 26 , 27 ]. The authors justify that the increase in wettability in polymeric materials is directly associated with the incorporation of functional groups such as C–O, C=O, and O–C–O [ 11 , 28 , 29 , 30 , 31 ]. The incorporated functional groups were verified, by the authors, using the XPS or FTIR techniques, with the associated reduction of the peak of the C–C and C–H bonds [ 5 , 12 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

et al. 2020

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In this work, the plasma was used in the dielectric barrier discharge (DBD) technique for modifying the high-density polyethylene (HDPE) surface. The treatments were performed via argon or oxygen, for 10 min, at a frequency of 820 Hz, voltage of 20 kV, 2 mm distance between electrodes, and atmospheric pressure. The efficiency of the plasma was determined through the triple Langmuir probe to check if it had enough energy to promote chemical changes on the material surface. Physicochemical changes were diagnosed through surface characterization techniques such as contact angle, attenuated total reflection to Fourier transform infrared spectroscopy (ATR-FTIR), X-ray excited photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). Plasma electronics temperature showed that it has enough energy to break or form chemical bonds on the material surface, impacting its wettability directly. The wettability test was performed before and after treatment through the sessile drop, using distilled water, glycerin, and dimethylformamide, to the profile of surface tensions by the Fowkes method, analyzing the contact angle variation. ATR-FTIR and XPS analyses showed that groups and bonds were altered or generated on the surface when compared with the untreated sample. The AFM showed a change in roughness, and this directly affected the increase of wettability.

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“…Adsorption on resin is a simple technology that has found widespread application in the treatment of industrial effluents [1,2]. In order to improve the adsorption efficiency and economize the use of macroporous resins, many studies on surface modifications have been carried out, and they mainly focus on chemical modifications [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Adsorbability Enhancement of Macroporous Resin by Dielectric Barrier Discharge Plasma Treatment to Phenol in Water

Tang

Yuan

Jun

2016

Journal of Chemistry

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In order to enhance the adsorption efficiency and economize the use of macroporous resin, we have treated it with the dielectric barrier discharge (DBD) plasma to improve its adsorbing capacity for phenol. The effects of operation conditions, for instance, applied voltage, treated time, and air flow rate on resin, were investigated by adsorption kinetics and isotherms. Results showed that the adsorption data were in good agreement with the pseudo-second-order and Freundlich equation. Experimental results showed that the modified resin was 156.5 mg/g and 39.2% higher than the untreated sample, when the modified conditions were conducted for discharge voltage 20 kV, treatment time 45 min, and air flow rate 1.2 L/min. The resin was characterized by FTIR and nitrogen adsorption isotherms before and after the DBD processes. It was found that the reason for the enhancement of resin adsorbability was attributed to the DBD plasma changing the surface physical and chemical structure.

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Surface modification of polymethylmethacrylate foils using an atmospheric pressure plasma jet in presence of water vapors

Cited by 20 publications

References 31 publications

Characterization of an Atmospheric Air Non-thermal Plasma Device in Relation to Ozone Production

Characterization of an Atmospheric Air Non-thermal Plasma Device in Relation to Ozone Production

Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

Adsorbability Enhancement of Macroporous Resin by Dielectric Barrier Discharge Plasma Treatment to Phenol in Water

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