DBD Surface Modification of Polymers in Relation to the Spatial Distribution of Reactive Oxygen Species

Borcia, G.; Cazan, Radu; Borcia, C.

doi:10.1007/s11090-011-9314-3

Cited by 9 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An analysis reveals that the modification of the average surface roughness on the treated surfaces is minimal, typically only a few nanometers. This outcome is consistent with previous research on various polymers treated with different atmospheric-pressure DBD arrangements, where the maximum variation of Ram and Rrms was found to be around 3-6 nm [39]. In fact, a significant modification of the roughness could indicate surface degradation caused by the extended treatment.…”

Section: Afm Surface Morphology Analysissupporting

confidence: 92%

See 1 more Smart Citation

Adhesion Properties and Stability of Non-Polar Polymers Treated by Air Atmospheric-Pressure Plasma

Bîrleanu,

Mihăilă,

Topală

et al. 2023

Polymers

View full text Add to dashboard Cite

Atmospheric-pressure plasma (APP) has advantages for enhancing the adhesion of polymers and has to provide uniform, efficient treatment, which also limits the recovery effect of treated surfaces. This study investigates the effects of APP treatment on polymers that have no oxygen bonded in their structure and varying crystallinity, aiming to assess the maximum level of modification and the post-treatment stability of non-polar polymers based on their initial structure parameters, including the crystalline–amorphous structure. An APP reactor simulating continuous processing operating in air is employed, and the polymers are analyzed using contact angle measurement, XPS, AFM, and XRD. APP treatment significantly enhances the hydrophilic character of the polymers, with semicrystalline polymers exhibiting adhesion work values of approximately 105 mJ/m2 and 110 mJ/m2 for 0.5 s and 1.0 s exposure, respectively, while amorphous polymers reach approximately 128 mJ/m2. The maximum average oxygen uptake is around 30%. Short treatment times induce the roughening of the semicrystalline polymer surfaces, while the amorphous polymer surfaces become smoother. The polymers exhibit a limit to their modification level, with 0.5 s exposure being optimal for significant surface property changes. The treated surfaces remain remarkably stable, with the contact angle only reverting by a few degrees toward that of the untreated state.

show abstract

Section: Afm Surface Morphology Analysissupporting

confidence: 92%

“…Interestingly, the evolution trend varies for different polymer structures. In the case of the three PEs and PP, an increase in surface roughness is observed, which is consistent with most studies [39]. However, for PS, the treated surface is smoother compared to the untreated one.…”

Section: Afm Surface Morphology Analysissupporting

confidence: 91%

Adhesion Properties and Stability of Non-Polar Polymers Treated by Air Atmospheric-Pressure Plasma

Bîrleanu,

Mihăilă,

Topală

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

“…While surface morphology was not examined in this study, previous research on various polymers treated with different atmospheric pressure DBD arrangements has demonstrated that changes in average surface roughness are minimal, typically only a few nanometers. Therefore, the influence of surface roughness on the measured contact angle is likely negligible [23,[44][45][46]. For PET and PEEK, hydrophobic recovery occurs predominantly within the first 2-3 days following plasma treatment, with minor subsequent changes.…”

Section: Contact Angle Measurementmentioning

confidence: 99%

Adhesion Properties and Stability of Polar Polymers Treated by Air Atmospheric Pressure Plasma

Ciobanu,

Mihăilă,

Borcia

et al. 2024

Polymers

View full text Add to dashboard Cite

This study continues the discussion on the surface modification of polymers using an atmospheric pressure plasma (APP) reactor in air. These results complement prior research focusing on nonpolar polymers. Polymers, such as polyethylene terephthalate, polyetheretherketone, and polymethyl methacrylate, containing structurally bonded oxygen are studied, representing a range of properties such as oxygen content, crystalline/amorphous structure, polarity, functionality, and aliphatic/aromatic structure. APP induces superior wetting properties on the hydrophilic polymer surfaces with rapid and uniform modification within 0.5 s of exposure. The amorphous structures undergo additional modification for longer exposure. Moreover, the aliphatic chain structures require longer plasma exposure to reach surface modification equilibrium. The polar polymers reach a limit level of modification corresponding to a minimum water contact angle of about 50°. The surface polarity increases on average by a factor of approximately two. The equilibrium values of the adhesion work attained after post-processing recovery fall within a limited range of about 100–120 mJ/m2. The enhancement of surface functionality through the creation of oxidized groups primarily depends on the initial oxygen content and reaches a limit of about 40 at.% oxygen. The surface properties of the treated polar surfaces exhibit good stability, comparable to that of the previously tested nonpolar polymers.

show abstract

“…By introducing a pulsed discharge between the successive RF discharge bursts in pulsed modulated RF discharges, the discharge is named as cascade discharge and the ignition of RF discharge is enhanced by pulsed discharge with reduced ignition time [13,14]. On the other hand, the uniformity of atmospheric glow discharge is not well addressed, especially along the electrode surface, which is an important issue in most applications [15,16].…”

Section: Introductionmentioning

confidence: 99%

Temporal evolution of atmospheric cascade glow discharge with pulsed discharge and radio frequency discharge

Han

Guo

2020

Plasma Sci. Technol.

View full text Add to dashboard Cite

Atmospheric cascade discharges with pulsed discharge and radio frequency (RF) discharge were experimentally investigated by the temporal evolution of discharge spatial profile and intensity. The indium tin oxide (ITO) coated glass was employed as the transparent electrode to capture the discharge distribution above the electrode surface. It is demonstrated that in the pulsed discharge with dielectric barrier, the first discharge at the rising edge of pulse voltage is uniformly ignited and then forms an expanding plasma ring on the ITO electrode surface, which shrinks to the same diameter as that of bare stainless steel electrode with the generation of second discharge at the falling edge of pulse voltage. The discharge profiles along the electrode surface and discharge gap of the successive RF discharge are dependent on the intensity and spatial distribution of residual plasma species generated by the pulsed discharge, which is determined by the time interval between the pulsed discharge and RF discharge. It is demonstrated that the residual plasma species before the RF discharge ignition help to achieve the stable operation of RF discharge with elevated intensity.

show abstract

DBD Surface Modification of Polymers in Relation to the Spatial Distribution of Reactive Oxygen Species

Cited by 9 publications

References 17 publications

Adhesion Properties and Stability of Non-Polar Polymers Treated by Air Atmospheric-Pressure Plasma

Adhesion Properties and Stability of Non-Polar Polymers Treated by Air Atmospheric-Pressure Plasma

Adhesion Properties and Stability of Polar Polymers Treated by Air Atmospheric Pressure Plasma

Temporal evolution of atmospheric cascade glow discharge with pulsed discharge and radio frequency discharge

Contact Info

Product

Resources

About