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

Deynse, Annick Van; Cools, Pieter; Leys, Christophe; Geyter, Nathalie De; Morent, Rino

doi:10.1016/j.apsusc.2014.12.075

Cited by 49 publications

(41 citation statements)

References 27 publications

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“…This ensures a higher surface energy and a lower WCA value at distances of 15 mm and lower. It has already been noticed in previous work that the strongest correlation can be found between the WCA and the concentration of the O-C=O groups [14]. Apparently, plasma jets are very efficient in producing long-living oxygen species [21,22] that being carried by the gas flow can reach the surface and interact with it.…”

Section: Influence Of the Distance Between The Capillary And The Foilmentioning

confidence: 90%

“…At a flow rate of 1.25 slm, the afterglow has found to be maximal and the visual length of the afterglow is 41.9 ± 1.0 mm relatively to the ground electrode [14]. Therefore, it could be expected that the plasma effect drastically diminishes from a distance capillary -foil of 22 mm.…”

Section: Influence Of the Distance Between The Capillary And The Foilmentioning

confidence: 95%

“…The increase in WCA is rather drastically, starting from a distance of 25 mm. As the visual length of the afterglow is 41.9 ± 1.0 mm [14] relatively from the ground electrode, this means that starting from 22 mm foilcapillary distance the afterglow does not visually reach the foil. This can explain the drastic increase of the WCA.…”

Section: Influence Of the Distance Between The Capillary And The Foilmentioning

confidence: 99%

“…High purity argon (Air Liquide -Alphagaz 1) is used for the plasma generation with a flow rate of 1.25 slm. At this flow rate, turbulence is avoided in the argon flow, as turbulence occurs from 1.5 slm on, and the length of the afterglow is maximal [14]. LDPE samples are modified with the plasma jet by scanning the polymer surface with adjustable scanning velocities (0.08 -4.5 m min -1 ).…”

Section: Atmospheric Pressure Plasma Jet (Appj)mentioning

confidence: 99%

“…The effects will be studied for different applied powers at a fixed argon flow rate of 1.25 slm (standard litres per minute). At this flow rate, turbulence will be avoided in the argon flow and the provided afterglow of the plasma is maximal [14]. Finally, the ageing effect of the plasma treated LDPE films will be investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

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Surface modification of polyethylene in an argon atmospheric pressure plasma jet

Deynse

Cools

Leys

et al. 2015

Surface and Coatings Technology

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The surface properties of polyethylene can successfully be altered using argon plasmas. In this work, the surface modification of low density polyethylene (LDPE) using an argon atmospheric pressure plasma jet (APPJ) is profoundly investigated. The surface modification is examined using different analysing techniques namely, water contact angle (WCA) measurements for the wettability and X-ray photoelectron spectroscopy (XPS) for the chemical composition. Particular attention is paid to the treatment distance between the plasma jet capillary and the LDPE foil and the applied treatment time. At treatment distances between 5 and 15 mm, the WCA can be reduced with more than 70% within a treatment time of a few ms. XPS measurements reveal that this is due to the incorporation of oxygen containing groups and especially the increased implementation of the O-C=O group has a big influence. At treatment distances above 15 mm, the wettability decreases with increasing treatment distance. The wettability can however be enhanced by increasing the treatment time. Ageing considerations show that the loss in treatment efficiency is restricted to only 25%, meaning that even after 14 days of ageing the WCA reduction upon plasma treatment is still more than 40%. Based on the above mentioned results, the most appropriate parameters can thus be selected to provide an efficient plasma treatment of LDPE using the argon APPJ.3

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Section: Influence Of the Distance Between The Capillary And The Foilmentioning

confidence: 90%

Section: Influence Of the Distance Between The Capillary And The Foilmentioning

confidence: 95%

Section: Influence Of the Distance Between The Capillary And The Foilmentioning

confidence: 99%

Section: Atmospheric Pressure Plasma Jet (Appj)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Surface modification of polyethylene in an argon atmospheric pressure plasma jet

Deynse

Cools

Leys

et al. 2015

Surface and Coatings Technology

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Plasma Processing of Aluminum Alloys to Promote Adhesion: A Critical Review

Patel¹,

Bhowmik

2018

Progress in Adhesion and Adhesives

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Investigating the crosslinking effects on surface characteristics of vinyltrimethoxysilane‐grafted moisture‐cured low‐density polyethylene/ethylene vinyl acetate blend

Sarkari

Mohseni

Ebrahimi

2018

J of Applied Polymer Sci

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In this article, the adhesion attributed characteristics of vinyltrimethoxysilane‐grafted moisture‐cured low‐density polyethylene/ethylene vinyl acetate (VTMS‐grafted LDPE/EVA) blend have been investigated before, during, and after crosslinking process. Characterization of the changes due to the moisture‐induced crosslinking has been carried out as a function of vapor exposure (crosslinking) duration. Fourier transform infrared (FTIR) spectroscopy was used for identification of compounds based on functional groups and also for identification of any modification in the chemical structure of the compounds. In addition, contact angle measurement was performed to calculate the surface energy and its components. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were utilized to study the surface morphology changes. The results demonstrated that the moisture‐induced crosslinking was not causing significant changes in roughness parameters and surface energy values of the samples after crosslinking. For instance, the Ra parameter, which shows the arithmetic average height of the surface, changed from 278 nm to 280 nm and the surface free energy decreased from 30.90 to 27.63 mJ/m2 after 16 hours of vapor exposure. However, surface relative elastic modulus approximately doubled, indicating a stiffer surface. The findings confirmed that the adhesion‐related surface properties of the VTMS‐grafted LDPE/EVA blend were not affected impressively by the crosslinking. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47147.

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

Cited by 49 publications

References 27 publications

Surface modification of polyethylene in an argon atmospheric pressure plasma jet

Surface modification of polyethylene in an argon atmospheric pressure plasma jet

Plasma Processing of Aluminum Alloys to Promote Adhesion: A Critical Review

Investigating the crosslinking effects on surface characteristics of vinyltrimethoxysilane‐grafted moisture‐cured low‐density polyethylene/ethylene vinyl acetate blend

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