Surface activation of polyethylene with an argon atmospheric pressure plasma jet: Influence of applied power and flow rate

2015 ◽  
Vol 328 ◽  
pp. 269-278 ◽  
Author(s):  
A. Van Deynse ◽  
P. Cools ◽  
C. Leys ◽  
N. De Geyter ◽  
R. Morent
Keyword(s):  
Flow Rate ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Surface Activation ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma

scholarly journals Emission Spectroscopic Characterization of a Helium Atmospheric Pressure Plasma Jet with Various Mixtures of Argon Gas in the Presence and the Absence of De-Ionized Water as a Target

Plasma ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 283-293 ◽  
Author(s):  
Bolouki ◽  
Hsieh ◽  
Li ◽  
Yang
Keyword(s):  
Flow Rate ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Spectroscopic Characterization ◽  
Atmospheric Pressure Plasma Jet ◽  
Stark Broadening ◽  
Boltzmann Plot ◽  
Argon Gas ◽  
Pressure Plasma

A helium-based atmospheric pressure plasma jet (APPJ) with various flow rates of argon gas as a variable working gas was characterized by utilizing optical emission spectroscopy (OES) alongside the plasma jet. The spectroscopic characterization was performed through plasma exposure in direct and indirect interaction with and without de-ionized (DI) water. The electron density and electron temperature, which were estimated by Stark broadening of atomic hydrogen (486.1 nm) and the Boltzmann plot, were investigated as a function of the flow rate of argon gas. The spectra obtained by OES indicate that the hydroxyl concentrations reached a maximum value in the case of direct interaction with DI water as well as upstream of the plasma jet for all cases. The relative intensities of hydroxyl were optimized by changing the flow rate of argon gas.

scholarly journals Evolution of the Surface Wettability of PET Polymer upon Treatment with an Atmospheric-Pressure Plasma Jet

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 87 ◽  
Author(s):  
Alenka Vesel ◽  
Rok Zaplotnik ◽  
Gregor Primc ◽  
Miran Mozetič
Keyword(s):  
Photoelectron Spectroscopy ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Surface Wettability ◽  
Surface Activation ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma ◽  
High Impedance ◽  
Glowing Discharge

A useful technique for pre-treatment of polymers for improved biocompatibility is surface activation. A method for achieving optimal wettability at a minimal thermal load and unwanted modifications of the polymer properties is elaborated in this paper. Samples of polyethylene terephthalate polymer were exposed to an atmospheric-pressure plasma jet created by a high-impedance low-frequency discharge in wet argon. Different treatment times and distances from the end of the glowing discharge enabled detailed investigation of the evolution of surface activation. A rather fast saturation of the surface wettability over the area of the order of cm2 was observed upon direct treatment with the glowing discharge. At a distance of few mm from the glowing discharge, the activation was already two orders of magnitude lower. Further increase of the distance resulted in negligible surface effects. In the cases of a rapid activation, very sharp interphase between the activated and unaffected surface was observed and explained by peculiarities of high-impedance discharges sustained in argon with the presence of impurities of water vapor. Results obtained by X-ray photoelectron spectroscopy confirmed that the activation was a consequence of functionalization with oxygen functional groups.

A new approach to surface activation of porous nanomaterials using non-thermal helium atmospheric pressure plasma jet treatment

2017 ◽  
Vol 53 (50) ◽  
pp. 6704-6707 ◽  
Author(s):  
Farkfun Duriyasart ◽  
Masataka Ohtani ◽  
Jun-Seok Oh ◽  
Akimitsu Hatta ◽  
Kazuya Kobiro
Keyword(s):  
Surface Properties ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Surface Activation ◽  
Atmospheric Pressure Plasma Jet ◽  
Optimum Conditions ◽  
New Approach ◽  
Pressure Plasma ◽  
Porous Nanomaterials

Facile treatment of mesoporous nanomaterials by a helium APPJ under optimum conditions activates the surface of the materials by removing contaminants without damaging their morphologies and surface properties.

scholarly journals Plasma Co-Polymerization of HMDSO and Limonene with an Atmospheric Pressure Plasma Jet

Plasma ◽  
2022 ◽  
Vol 5 (1) ◽  
pp. 44-59
Author(s):  
Gerrit Wulf ◽  
Bernd Mayer ◽  
Uwe Lommatzsch
Keyword(s):  
Functional Groups ◽  
Flow Rate ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Carboxyl Groups ◽  
Atmospheric Pressure Plasma Jet ◽  
Xps Analysis ◽  
Pressure Plasma ◽  
Plasma Reactions

Plasma co-polymers (co-p) were deposited with an atmospheric pressure plasma jet (APPJ) using a precursor mixture containing hexamethyldisiloxane (HMDSO) and limonene. A coating with fragments from both precursors and with siloxane, carbonyl and nitrogen functional groups was deposited. The flow rate of limonene was found to be an important parameter for plasma co-polymerization to tune the formation and structure of the functional groups. The FTIR and XPS analysis indicates that with increasing flow rate of limonene a higher proportion of carbon is bound to silicon. This is related to a stronger incorporation of fragments from limonene into the siloxane network and a weaker fragmentation of HMDSO. The formation mechanism of the nitroxide and carboxyl groups can be mainly differentiated into in-plasma and post-plasma reactions, respectively.

scholarly journals High-Accuracy Surface Topography Manufacturing for Continuous Phase Plates Using an Atmospheric Pressure Plasma Jet

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 683
Author(s):  
Huiliang Jin ◽  
Caixue Tang ◽  
Haibo Li ◽  
Yuanhang Zhang ◽  
Yaguo Li
Keyword(s):  
Surface Topography ◽  
Atmospheric Pressure ◽  
High Efficiency ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Continuous Phase ◽  
High Accuracy ◽  
Phase Plate ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma

The continuous phase plate (CPP) is the vital diffractive optical element involved in laser beam shaping and smoothing in high-power laser systems. The high gradients, small spatial periods, and complex features make it difficult to achieve high accuracy when manufacturing such systems. A high-accuracy and high-efficiency surface topography manufacturing method for CPP is presented in this paper. The atmospheric pressure plasma jet (APPJ) system is presented and the removal characteristics are studied to obtain the optimal processing parameters. An optimized iterative algorithm based on the dwell point matrix and a fast Fourier transform (FFT) is proposed to improve the accuracy and efficiency in the dwell time calculation process. A 120 mm × 120 mm CPP surface topography with a 1326.2 nm peak-to-valley (PV) value is fabricated with four iteration steps after approximately 1.6 h of plasma processing. The residual figure error between the prescribed surface topography and plasma-processed surface topography is 28.08 nm root mean square (RMS). The far-field distribution characteristic of the plasma-fabricated surface is analyzed, for which the energy radius deviation is 11 μm at 90% encircled energy. The experimental results demonstrates the potential of the APPJ approach for the manufacturing of complex surface topographies.

Formation of plasma-polymerized superhydrophobic coating using an atmospheric-pressure plasma jet

2019 ◽  
Vol 675 ◽  
pp. 34-42 ◽  
Author(s):  
Md. Mokter Hossain ◽  
Quang Hung Trinh ◽  
Duc Ba Nguyen ◽  
M.S.P. Sudhakaran ◽  
Young Sun Mok
Keyword(s):  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Superhydrophobic Coating ◽  
Pressure Plasma
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