Antimicrobial Coatings Obtained in an Atmospheric Pressure Dielectric Barrier Glow Discharge

AbstractThis paper addresses the development of plasma polymer coatings that should prevent bacteria from adhering to medical devices, implants, textile fibers, packaging materials, etc. The two main parameters affecting bacterial colonization onto surfaces are the surface energy and the surface roughness. Both parameters can be adjusted by the deposition of a thin plasma polymer coating in an atmospheric pressure dielectric barrier glow discharge. According to SEM, FTIR, SPM, XPS and contact angle measurements, smooth, hydrophilic plasma polymer coatings were obtained under specific plasma conditions starting from 2-hydroxyethyl methacrylate (HEMA) and ethyl diazoacetate (EDA).

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Atmospheric Pressure Dielectric Barrier Discharges for the Deposition of Organic Plasma Polymer Coatings for Biomedical Application

Plasma Chemistry and Plasma Processing ◽

10.1007/s11090-020-10135-6 ◽

2020 ◽

Author(s):

Jumal Ibrahim ◽

Sameer A. Al-Bataineh ◽

Andrew Michelmore ◽

Jason D. Whittle

Keyword(s):

Atmospheric Pressure ◽

Biomedical Application ◽

Polymer Coatings ◽

Plasma Polymer ◽

Dielectric Barrier Discharges ◽

Dielectric Barrier ◽

Barrier Discharges

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Deposition of 2‐oxazoline‐based plasma polymer coatings using atmospheric pressure helium plasma jet

Plasma Processes and Polymers ◽

10.1002/ppap.201900104 ◽

2019 ◽

Vol 16 (10) ◽

pp. 1900104 ◽

Cited By ~ 4

Author(s):

Sameer A. Al‐Bataineh ◽

Alex A. Cavallaro ◽

Andrew Michelmore ◽

Melanie N. Macgregor ◽

Jason D. Whittle ◽

...

Keyword(s):

Atmospheric Pressure ◽

Plasma Jet ◽

Polymer Coatings ◽

Plasma Polymer ◽

Helium Plasma

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Surface Treatment of PMIA Fibers with Sub-Atmospheric Pressure Dielectric Barrier Glow Discharge Plasma

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1048.72 ◽

2014 ◽

Vol 1048 ◽

pp. 72-76

Author(s):

Huan Da Zheng ◽

Juan Zhang ◽

Bing Du ◽

Qu Fu Wei ◽

Lai Jiu Zheng

Keyword(s):

Glow Discharge ◽

Atmospheric Pressure ◽

Chemical Structure ◽

Surface Characterization ◽

Discharge Plasma ◽

Treatment Time ◽

Fiber Surface ◽

Glow Discharge Plasma ◽

Dielectric Barrier ◽

Ft Ir

Meta-aramid fibers were treated by sub-atmospheric pressure dielectric barrier glow discharge plasma. The effect of plasma treatment time on the fiber surface physical and chemical properties was studied by using surface characterization techniques. Scanning electron microscopy (SEM) was performed to determine the surface morphology changes. FT-IR spectroscopy measurements were performed to investigate the change of chemical structure. Dynamic contact angle analysis (DCAA) was used to examine the changes of the fiber surface wettability. SEM analysis showed that there was obvious crack along the fibers’ axial direction present on the fiber surface, which resulted in the better wetting behavior of the plasma-treated PMIA fiber. FT-IR analysis showed that plasma had little effect on the chemical structure of PMIA fibers. DCAA analysis showed that the wettability of the samples could be improved with the treatment time increasing. In addition, a slight decrease in breaking strength was observed at the treatment time ranging from 60 to 180 s in comparison with the untreated sample.

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Improved de-inking of inkjet-printed paper using environmentally friendly atmospheric pressure low temperature plasma for paper recycling

Scientific Reports ◽

10.1038/s41598-019-50495-4 ◽

2019 ◽

Vol 9 (1) ◽

Author(s):

Rodolphe Mauchauffé ◽

Seung Jun Lee ◽

Isaac Han ◽

Sang Hyeong Kim ◽

Se Youn Moon

Keyword(s):

Plasma Treatment ◽

Atmospheric Pressure ◽

Paper Recycling ◽

Temperature Plasma ◽

Water Contact ◽

Angle Measurements ◽

Natural Energy ◽

Contact Angle Measurements ◽

Speed Up ◽

Uv Visible

Abstract Nowadays, due to environmental pollution and natural energy consumption caused by waste paper, many researches are being conducted on the reuse of printed-paper. To recycle the paper, de-inking has to be performed. In this article, in order to reduce the use of the commonly used de-inking chemicals, the effect of an atmospheric pressure helium plasma treatment on the de-inking enhancement of printed-paper is studied. Through colorimeter and UV-visible spectrometer measurements the plasma treatment is shown to speed up the de-inking. While SEM observations and FTIR measurements suggest that the paper quality is retained upon plasma treatment, the increase of surface hydrophilicity measured by water contact angle measurements, compared to non-treated paper, is believed to enhance the fiber swelling of the paper and lead to a faster ink removal.

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Effects of Pretreatment Methods on the Enamel Surface Improving Sealant Adhesion

Journal of Biomimetics Biomaterials and Biomedical Engineering ◽

10.4028/www.scientific.net/jbbbe.40.92 ◽

2019 ◽

Vol 40 ◽

pp. 92-100

Author(s):

Adina Rotaru-Birgaoanu ◽

Teodora Teslaru ◽

R. Ionut Olariu ◽

Ionut Chirap ◽

Liliana Sachelarie ◽

...

Keyword(s):

Atmospheric Pressure ◽

Diffuse Reflectance ◽

Enamel Surface ◽

Acid Etching ◽

Minimum Level ◽

Angle Measurements ◽

Physical Chemical ◽

Contact Angle Measurements ◽

Hydrophilic Character ◽

Yellow Index

Is PlasBeam pretreatment an efficient method to improve sealant adhesion onto the enamel surface?The aim of this study isto investigate the effects induced by three pretreatment techniques used to improve sealant adhesion on the enamel surface, respectively standard acid-etching, UV radiations and a new method based on plasma operating at atmospheric pressure, namely the PlasBeam method.The physical-chemical modifications induced onto the enamel surface by the above pretreatments were analyzed using Contact Angle Measurements and Diffuse Reflectance Spectroscopy.The changes in the enamel surface morphology show that the acid-etching pretreatment is mostly efficient in increasing roughness, but this method stimulates the degradation processes that are well-known and turns down the brillianceof the treated surface. On the other hand, the PlasBeam treatment brings a higher roughness at the contact area between sealant and the enamel surface, compared to the UV radiations pretreatments.Moreover, the PlasBeam improves the hydrophilic character of enamel as a practical solution in enhancing the sealant adhesion to the surface. Related to other effects, it has been noticed that thePlasBeam method generates the most reflective enamel surface, whereas the White/Yellow index reaches the minimum level after a 10 second treatment.

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