Plasma Processing of Polymers by a Low‐Frequency Discharge with Asymmetrical Configuration of Electrodes

Arefi‐Khonsari, Farzaneh; Tatoulian, Michaël

doi:10.1002/9783527622184.ch8

Cited by 14 publications

(11 citation statements)

References 83 publications

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“…The fact that we have identified unsaturation in the case of both jet plasma-treated as well as glow treated samples, shows that besides surface oxidation which is very commonly identified in the case of plasma treated polymer surfaces, in the case of helium treated UHMWPE, we also observe crosslinking which is also a synergistic process taking place with the formation of unsaturation. [12,13] Furthermore, we can point out that the glow plasma-treated sample inside the tube presents for the same treatment time of 7 min more crosslinking than the jet one outside the tube. Figure 4 shows the UHMWPE films placed inside the tube in the glow configuration (2 cm from the outlet) treated for different times.…”

Section: Resultsmentioning

confidence: 99%

Atmospheric pressure surface modification and cross‐linking of UHMWPE film and inside HDPE tube by transporting discharge

Omran

Baitukha

Pulpytel

et al. 2017

Plasma Processes & Polymers

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In this work, the surface modification of ultra‐high‐molecular‐weight polyethylene (UHMWPE), a linear polymer, by a helium transporting discharge at atmospheric pressure was investigated by means of FTIR, AFM, XPS, ToF‐SIMS, and contact angle measurements. Two types of discharge configurations, that is, jet and glow of the transporting discharge for the surface treatment of polymer substrates were studied. The results show that the position of the UHMWPE polymer substrates plays an important role in the surface modification and stability of the treatment. The polymer substrates placed inside the transporting discharge tube present more stable wettability and surface modification. In addition, the transporting discharge was used to modify the inner surface of the high density polyethylene tube.

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Section: Resultsmentioning

confidence: 99%

Atmospheric pressure surface modification and cross‐linking of UHMWPE film and inside HDPE tube by transporting discharge

Omran

Baitukha

Pulpytel

et al. 2017

Plasma Processes & Polymers

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“…This phenomenon has been explained by considering that produced peroxides are partly converted into inactive species which do not yield radicals, even after prolonged plasma exposure 15. Considering the mechanistic studies of plasma modification in the presence of oxygen gas, the initial rapid increase may be due to creation of more macro radical sites by plasma created species or vacuum ultraviolet radiations (VUV) 14, 21. These active sites react fast with oxygen molecules to form peroxy radicals which may create hydroperoxides by abstraction of hydrogen during plasma exposure or by reaction with humid air in the post plasma process 21–23.…”

Section: Resultsmentioning

confidence: 99%

Surface modification of polycaprolactone monofilament by low pressure oxygen plasma

Gupta

Krishnanand

Deopura

et al. 2012

J of Applied Polymer Sci

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Surface modification of polycaprolactone filament has been carried out using a low pressure oxygen plasma to introduce active centers in the form of radicals, peroxides, and hydroperoxides on the surface. Evaluation by 2, 2-diphenyl-1-picrylhydrazyl method shows that there is an optimum value of exposure time, gas pressure, and discharge power for the generation of the maximum concentration of such groups. The plasma exposure time was thereafter varied to study the extent of the surface modification introduced by the plasma. It was found that only a short time of exposure to the oxygen plasma was necessary to make the surface highly wettable and polar with increased surface energy and work of adhesion. Surface chemical analysis by X-ray photoelectron spectroscopy revealed that this happens because of oxidation of the top layer of the filament, which occurs primarily by the breaking of bonds and incorporation of oxygen containing functionalities. Morphological and topographical observations by scanning electron microscopy and atomic force microscopy revealed that etching is pronounced at longer exposure times leading to a rougher surface with hill-valley features.

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“…It is an environmentally benign, solvent free dry process, has a low process cost, good process control, and no adverse effects on the bulk properties of the material [142]. Non-equilibrium plasmas have been widely used for the plasma modification of polymeric materials for various purposes, including biomedical applications [143][144][145][146][147].…”

Section: Role Of Plasma Processing In Biofouling Preventionmentioning

confidence: 99%

“…[143,[154][155][156][157]. CF 4 plasma has been applied to produce anti-adhesive fluorinated hydrophobic cellulose hemodialysis membrane surfaces in order to prevent biofilm formation [158].…”

Section: Plasma Surface Functionalizationmentioning

confidence: 99%

Preventing Biofilm Formation on Biomedical Surfaces

Kumar¹,

Rauscher²,

Bretagnol³

et al. 2010

Plasma Technology for Hyperfunctional Surfaces

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Plasma Processing of Polymers by a Low‐Frequency Discharge with Asymmetrical Configuration of Electrodes

Cited by 14 publications

References 83 publications

Atmospheric pressure surface modification and cross‐linking of UHMWPE film and inside HDPE tube by transporting discharge

Atmospheric pressure surface modification and cross‐linking of UHMWPE film and inside HDPE tube by transporting discharge

Surface modification of polycaprolactone monofilament by low pressure oxygen plasma

Preventing Biofilm Formation on Biomedical Surfaces

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