scholarly journals Reel-to-Reel Atmospheric Pressure Dielectric Barrier Discharge (DBD) Plasma Treatment of Polypropylene Films

2017 ◽  
Vol 7 (4) ◽  
pp. 337 ◽  
Author(s):  
Lukas Seidelmann ◽  
James Bradley ◽  
Marina Ratova ◽  
Jonathan Hewitt ◽  
Jamie Moffat ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Barrier Discharge ◽  
Dbd Plasma ◽  
Dielectric Barrier ◽  
Polypropylene Films

scholarly journals Virucidal Effects of Dielectric Barrier Discharge Plasma on Human Norovirus Infectivity in Fresh Oysters (Crassostrea gigas)

Foods ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1731
Author(s):  
Man-Seok Choi ◽  
Eun Bi Jeon ◽  
Ji Yoon Kim ◽  
Eun Ha Choi ◽  
Jun Sup Lim ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Dielectric Barrier Discharge ◽  
Copy Number ◽  
Barrier Discharge ◽  
Quantitative Polymerase Chain Reaction ◽  
Inactivation Kinetics ◽  
Dbd Plasma ◽  
Human Norovirus ◽  
Dielectric Barrier ◽  
The Impact

This study investigates the effects of dielectric barrier discharge (DBD) plasma treatment (1.1 kV, 43 kHz, N2 1.5 L/min, 10~60 min) on human norovirus (HuNoV) GII.4 infectivity in fresh oysters. HuNoV viability in oysters was assessed by using propidium monoazide (PMA) as a nucleic acid intercalating dye before performing a real-time reverse transcription–quantitative polymerase chain reaction (RT-qPCR). Additionally, the impact of the DBD plasma treatment on pH and Hunter colors was assessed. When DBD plasma was treated for 60 min, the HuNoV genomic titer reduction without PMA pretreatment was negligible (<1 log copy number/µL), whereas when PMA treatment was used, HuNoV titer was reduced to >1 log copy number/µL in just 30 min. D1 and D2-value of HuNoV infectivity were calculated as 36.5 and 73.0 min of the DBD plasma treatment, respectively, using the first-order kinetics model (R2 = 0.98). The pH and Hunter colors were not significantly different (p > 0.05) between the untreated and DBD-plasma-treated oysters. The results suggest that PMA/RT-qPCR could help distinguish HuNoV infectivity without negatively affecting oyster quality following >30 min treatment with DBD plasma. Moreover, the inactivation kinetics of nonthermal DBD plasma against HuNoV in fresh oysters might provide basic information for oyster processing and distribution.

Surface Modification of Polypropylene Melt Blown Non-Woven Using Atmospheric Pressure Dielectric Barrier Discharge Plasma

2010 ◽  
Vol 42 ◽  
pp. 228-231 ◽  
Author(s):  
Yan Zhang ◽  
Yin Ding Lv
Keyword(s):  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Barrier Discharge ◽  
Treatment Time ◽  
Woven Fabric ◽  
Dbd Plasma ◽  
Water Contact ◽  
Dielectric Barrier ◽  
Barrier Discharge Plasma ◽  
Plasma Treatment Time

In this paper, polypropylene (PP) melt blown non-woven fabric is treated by atmospheric pressure N2 or N2/CO2 dielectric barrier discharge (DBD) plasma. The variation of the surface hydrophilicity of PP sample is experimentally investigated by surface water contact angle, Fourier transform infrared reflectance spectroscopy (FTIR-ATR). The results show that the hydrophilicity of PP sample is considerably improved as long as the very short plasma treatment time (several seconds). However, the treatment effect of atmospheric N2/CO2 plasma is worse than that of atmospheric N2 plasma.

scholarly journals INHIBITION OF CANDIDA ALBICANS GROWTH ON SURFACES TREATED BY DIELECTRIC BARRIER DISCHARGE WITH VARIOUS BARRIERS

2014 ◽  
Vol 54 (4) ◽  
pp. 290-294 ◽  
Author(s):  
Jan Sláma ◽  
Vítezslav Kríha
Keyword(s):  
Candida Albicans ◽  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Barrier Discharge ◽  
Low Temperature Plasma ◽  
Dbd Plasma ◽  
Barrier Material ◽  
Temperature Plasma ◽  
Dielectric Barrier ◽  
Non Destructive

Discharges generating low temperature plasma at atmospheric pressure have the potential to treat surfaces biologically contaminated by organic matter in a non-destructive manner. We have been studying ways of inhibiting the growth of microorganisms with the use of dielectric barrier discharge (DBD) plasma. The effect of the choice of a barrier material and its thickness on the<br />germicide properties of the DBD is described. We used Saboraud agar inoculated by 10<sup>5</sup> cfu/cm<sup>2</sup> of <em>Candida albicans</em> yeast as the model contaminated surface. After cultivation, the proportion of the treated surface with no <em>C. albicans</em> colony was evaluated.

Study of PVA on Polyester Desizing with Atmospheric Pressure Dielectric Barrier Discharge Plasma

2013 ◽  
Vol 681 ◽  
pp. 11-15 ◽  
Author(s):  
Li Ming Li ◽  
Yong Qiang Li ◽  
Jin Qiang Liu
Keyword(s):  
Plasma Treatment ◽  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Barrier Discharge ◽  
Polyester Fabric ◽  
Atmospheric Plasma ◽  
Dielectric Barrier Discharge Plasma ◽  
Dielectric Barrier ◽  
Barrier Discharge Plasma

The effect of atmospheric pressure dielectric barrier discharge plasma treatment on desizing polyvinyl alcohol (PVA) on polyester fabric was discussed as compared desizing with alkali through a combination of desizing rate, field scanning electron microscopy and strength test. The dyeing properties of polyester fabrics treated with atmospheric plasma have also been studied. The results show that plasma treatment can improve desizing rate, surface color depth and dye-uptake for polyester fabric.

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