Fine processing of polymer surface by irradiating local atmospheric pressure plasma jets using helium source gas mixed with water vapor

2017 ◽  
Author(s):  
Sho Yamamoto ◽  
Daisuke Morimatsu ◽  
Hiromitsu Nakamura ◽  
Akihisa Ogino ◽  
Masaaki Nagatsu ◽  
...  
Keyword(s):  
Water Vapor ◽  
Atmospheric Pressure ◽  
Polymer Surface ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jets ◽  
Pressure Plasma

scholarly journals Visualization of Activated Area on Polymers for Evaluation of Atmospheric Pressure Plasma Jets

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2711
Author(s):  
Dariusz Korzec ◽  
Thomas Andres ◽  
Eva Brandes ◽  
Stefan Nettesheim
Keyword(s):  
Atmospheric Pressure ◽  
Polymer Surface ◽  
Digital Camera ◽  
Atmospheric Pressure Plasma ◽  
Acrylonitrile Butadiene Styrene ◽  
Ambient Air ◽  
Substrate Material ◽  
Plasma Jets ◽  
Activation Area ◽  
Pressure Plasma

The treatment of a polymer surface using an atmospheric pressure plasma jet (APPJ) causes a local increase of the surface free energy (SFE). The plasma-treated zone can be visualized with the use of a test ink and quantitatively evaluated. However, the inked area is shrinking with time. The shrinkage characteristics are collected using activation image recording (AIR). The recording is conducted by a digital camera. The physical mechanisms of activation area shrinkage are discussed. The error sources are analyzed and methods of error reduction are proposed. The standard deviation of the activation area is less than 3%. Three polymers, acrylonitrile butadiene styrene (ABS), high-density polyethylene (HDPE), and polyoxymethylene (POM), are examined as a test substrate material. Due to a wide variation range of SFE and a small hydrophobic recovery, HDPE is chosen. Since the chemical mixtures tend to temporal changes of the stoichiometry, the pure formamide test ink with 58 mN/m is selected. The method is tested for the characterization of five different types of discharge: (i) pulsed arc APPJ with the power of about 700 W; (ii) piezoelectric direct discharge APPJ; (iii) piezoelectric driven needle corona in ambient air; (iv) piezoelectric driven plasma needle in argon; and (v) piezoelectric driven dielectric barrier discharge (DBD). For piezoelectrically driven discharges, the power was either 4.5 W or 8 W. It is shown how the AIR method can be used to solve different engineering problems.

scholarly journals Cold atmospheric pressure plasma jets as sources of singlet delta oxygen for biomedical applications

2011 ◽  
Vol 109 (12) ◽  
pp. 123302 ◽  
Author(s):  
J. S. Sousa ◽  
K. Niemi ◽  
L. J. Cox ◽  
Q. Th. Algwari ◽  
T. Gans ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Biomedical Applications ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jets ◽  
Pressure Plasma ◽  
Cold Atmospheric Pressure Plasma

Enhanced Long-Term Color Stability of Teeth Treated with Hydrogen Peroxide and Non-Thermal Atmospheric Pressure Plasma Jets

2014 ◽  
Vol 11 (11) ◽  
pp. 1010-1017 ◽  
Author(s):  
Seoul Hee Nam ◽  
Hyun Wook Lee ◽  
Jin Woo Hong ◽  
Hae June Lee ◽  
Gyoo Cheon Kim
Keyword(s):  
Hydrogen Peroxide ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Color Stability ◽  
Plasma Jets ◽  
Pressure Plasma

scholarly journals Development Of Atmospheric Pressure Plasma Jet In Air

2012 ◽  
Vol 8 (1) ◽  
pp. 15-22 ◽  
Author(s):  
RB Tyata ◽  
DP Subedi ◽  
A Shrestha ◽  
D Baral
Keyword(s):  
Atmospheric Pressure ◽  
Polymer Surface ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Optical Measurements ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma ◽  
Large Structures ◽  
Small Flow ◽  
Effect Of Treatment

In this paper, an atmospheric pressure plasma jet (APPJ) in air that is expected to be useful for polymer surface modification has been reported. The plasma jet was produced by applying (10 - 30) kHz, (0 - 20) kV AC source. The electrical and optical measurements have also been reported. The use of solenoid as an external electrode has been found to be more effective in boosting the jet to a distance up to 30 mm even with a small flow rate of air. The characteristic of the proposed APPJ was investigated by measuring the effect of treatment on a PE film on the jet for different exposition time and distance from the nozzle. It has been confirmed that the jet can modify polymer film with a work distance of over 25mm. This plasma jet can be useful for the treatment and cleaning of objects having large structures and could be used in wider areas of application. DOI: http://dx.doi.org/10.3126/kuset.v8i1.6035 KUSET 2012; 8(1): 15-22

Power Systems of Plasma Reactors for Non-Thermal Plasma Generation

2013 ◽  
Vol 16 (1) ◽  
Author(s):  
Henryka Danuta Stryczewska ◽  
Tomasz Jakubowski ◽  
Stanisław Kalisiak ◽  
Tomasz Giżewski ◽  
Joanna Pawłat
Keyword(s):  
Atmospheric Pressure ◽  
Arc Discharge ◽  
Plasma Reactor ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jets ◽  
Plasma Reactors ◽  
Dielectric Barrier ◽  
Gliding Arc ◽  
Pressure Plasma ◽  
Supply Systems

AbstractRecently, many different plasma sources are being investigated for exhaust gases treatment, odor abatement, VOC removal, soil conditioning, surface decontamination or tissue disinfection and sterilization. Among many different plasma reactors investigated in laboratories, gliding arc discharges (GAD), dielectric barrier discharges (DBD), pulsed discharges (PD), atmospheric pressure glow discharges (APGD) and atmospheric pressure plasma jets (APPJ) seem to be the most promising for high pressure low temperature applications. They can be designed as multi-electrodes’ high power system that can be used in environment protection processes, like decontamination of large surfaces and treatment of large volume of polluted gases, as well as small size and low power devices for biomedical applications, like plasma healing, disinfection and sterilization. Paper presents review of power supply systems for cold plasma reactors. Dielectric Barrier Discharge (DBD), Gliding Arc Discharge (GAD) and atmospheric pressure plasma jet (APPJ) reactors with their supply systems have been discussed from the point view of their characteristics, possibility to control power to the discharge and efficiency. Taking into account the plasma reactor characteristics and nature (nonlinear resistive and/or capacitive) different solutions of power suppliers have been presented: transformer type, AC/DC/AC inverter, RF-frequency system and frequency resonant inverter.

Sign in / Sign up

Export Citation Format

Share Document