Untitled

Seeböck, R.; Esrom, Hilmar; Charbonnier, M.; Romand, M.

doi:10.1023/a:1009587916382

Cited by 32 publications

(12 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A variety of polymers have been treated by plasmas, including polypropylene (PP) [3][4][5][6][7][8][9], polyethylene (PE) [3,[10][11][12][13][14][15], poly(tetrafluoroethylene) [16], polyimide [17,18], 3 Present address: Varian Semiconductor Equipment Associates, 35 Dory Road, Gloucester, MA 01930, USA. 4 Author to whom correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

A model for plasma modification of polypropylene using atmospheric pressure discharges

Dorai

Kushner

2003

J. Phys. D: Appl. Phys.

443

301

View full text Add to dashboard Cite

Atmospheric pressure plasmas are commonly used to improve the wetting and adhesion properties of polymers. In spite of their use, the mechanisms for achieving these properties are unclear. In this regard, we report on a computational investigation of the gas phase and surface kinetics during humid-air corona treatment of polypropylene (PP) and the resulting modification of its surface properties while varying energy deposition, relative humidity (RH), web speed, and gas temperature. Using results from a global plasma chemistry model validated against experiments, we found that increasing energy deposition increased the densities of alcohol, carbonyl, acid, and peroxy radicals on the PP surface. In doing so, significant amounts of gas phase O 3 and N x O y are produced. Increasing the RH increased the production of peroxy and acid groups, while decreasing those of alcohol and carbonyl groups. Production of O 3 decreased while that of HNO 3 increased. Increasing the temperature decreased the concentrations of alcohol, carbonyl, and acid groups on PP while those of the peroxy radicals increased. For a given energy deposition, higher web speeds resulted in decreased concentrations of alcohols, peroxy radicals, carbonyl, and acid groups on PP.

show abstract

Section: Introductionmentioning

confidence: 99%

A model for plasma modification of polypropylene using atmospheric pressure discharges

Dorai

Kushner

2003

J. Phys. D: Appl. Phys.

443

301

View full text Add to dashboard Cite

show abstract

“…The hydrophobicity recovery after washing the samples is clear evidence of the washing away of surface oligomers that were formed as a result of polymer surface degradation or damage during the plasma treatments. 32) The coincident hydrophobicity recovery was also observed in the monatomic-gas-plasma-modified polymeric separator surfaces after washing processes. Figure 8 shows the SEM images of the unmodified and He-and Ar-monatomic-gas-plasma-modified polymeric separators.…”

Section: Resultsmentioning

confidence: 82%

Tailoring Surface Properties of Polymeric Separators for Lithium-Ion Batteries by 13.56 MHz Radio-Frequency Plasma Glow Discharge

Liang

Juang

Tsai

et al. 2013

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

The hydrophilic surface modification of the polymeric separator is achieved by low-pressure 13.56 MHz radio-frequency Ar and He gas plasma treatments. The changes in surface hydrophilicity and surface free energy were examined by static contact angle analysis. The static water contact angle of the plasma-modified polymeric separator particularly decreased with the increase in treatment time. An obvious increase in the surface energy of polymeric separators owing to the crosslinking by activated species of inert gases effect of monatomic-gas-plasma treatments was also observed. Optical emission spectroscopy was carried out to analyze the chemical species generated after Ar and He gas plasma treatments. The variations in the surface morphology and chemical structure of the polymeric separators were confirmed by scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy (XPS) measurements. XPS analysis showed significantly higher surface concentrations of oxygen functional groups for monatomic-gas-plasma-modified polymeric separator surfaces than for the unmodified polymeric separator surface. The experimental results show the important role of chemical species in the interaction between Ar and He gas plasmas and the polymeric separator surface, which can be controlled by surface modification to tailor the hydrophilicity of the polymeric separator.

show abstract

“…The serious drawback of the volume DBD by treatment of large area dielectric substrates is that the discharge channels have to cross the substrate material and can cause its local overheating or even damage [194]. This is not the case for different types of planar DBDs because the discharge channels run parallel to the treated surface.…”

Section: Sdb Driven By Pddmentioning

confidence: 99%

Piezoelectric Direct Discharge: Devices and Applications

Korzec¹,

Hoppenthaler²,

Nettesheim³

2020

Plasma

View full text Add to dashboard Cite

The piezoelectric direct discharge (PDD) is a comparatively new type of atmospheric pressure gaseous discharge for production of cold plasma. The generation of such discharge is possible using the piezoelectric cold plasma generator (PCPG) which comprises the resonant piezoelectric transformer (RPT) with voltage transformation ratio of more than 1000, allowing for reaching the output voltage >10 kV at low input voltage, typically below 25 V. As ionization gas for the PDD, either air or various gas mixtures are used. Despite some similarities with corona discharge and dielectric barrier discharge, the ignition of micro-discharges directly at the ceramic surface makes PDD unique in its physics and application potential. The PDD is used directly, in open discharge structures, mainly for treatment of electrically nonconducting surfaces. It is also applied as a plasma bridge to bias different excitation electrodes, applicable for a broad range of substrate materials. In this review, the most important architectures of the PDD based discharges are presented. The operation principle, the main operational characteristics and the example applications, exploiting the specific properties of the discharge configurations, are discussed. Due to the moderate power achievable by PCPG, of typically less than 10 W, the focus of this review is on applications involving thermally sensitive materials, including food, organic tissues, and liquids.

show abstract

Untitled

Cited by 32 publications

References 11 publications

A model for plasma modification of polypropylene using atmospheric pressure discharges

A model for plasma modification of polypropylene using atmospheric pressure discharges

Tailoring Surface Properties of Polymeric Separators for Lithium-Ion Batteries by 13.56 MHz Radio-Frequency Plasma Glow Discharge

Piezoelectric Direct Discharge: Devices and Applications

Contact Info

Product

Resources

About