Stable plasma polymerized acrylic acid coating deposited on polyethylene (PE) films in a low frequency discharge (70kHz)

Jafari, Reza; Tatoulian, Michaël; Morscheidt, W.; Arefi‐Khonsari, Farzaneh

doi:10.1016/j.reactfunctpolym.2006.08.006

Cited by 78 publications

(69 citation statements)

References 13 publications

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“…Similar changes in WCA for ppAA, after water immersion, have previously been observed and have been ascribed to the loss of COOH functionalities in the coating [29]. The water contact angle of ppAAc coatings deposited using the air plasma system are significantly higher than those deposited using the PlasmaStream system at 52˚.…”

Section: Coating Comparison Studysupporting

confidence: 79%

Protein adhesion on water stable atmospheric plasma deposited acrylic acid coatings

Donegan

Dowling

2013

Surface and Coatings Technology

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There is considerable interest in the application of plasma polymerised acrylic acid (ppAAc) coatings due to their ability to enhance the adhesion of cells and proteins. An issue with this coating however it its stability in water and previous studies carried out using low pressure plasmas have demonstrated that high plasma powers are required to achieve water stable coatings. In this paper the use of both helium and air atmospheric plasmas are compared for the deposition of ppAAc coatings. The deposition studies were carried out on silicon wafer substrates using the PlasmaStream TM and PlasmaTreat TM plasma jet deposition systems respectively. The coatings were characterized using contact angle, FTIR, SEM, XPS, ellipsometry and optical profilometry. While both the helium and air plasmas were successful in the deposition of ppAAc coatings, the nm thick films deposited using the PlasmaTreat system exhibited significantly higher levels of water stability, probably due to a higher level of coating cross linking. Ellipsometry measurements demonstrated only a 0.2 nm reduction in the thickness of an 18 nm thick ppAAc coating, when immersed in an aqueous buffer solution for one hour. Protein attachment studies were carried out using a flow cell system, which was monitored using a spectroscopic ellipsometer. This study was carried out with Bovine Serum Albumin (BSA), Immunoglobulin G (IgG) and Fibrinogen (Fg) proteins. In all three cases increased levels of protein adhesion was observed for the ppAAc coating, compared to that obtained on the uncoated silicon wafer substrates.Keywords: Atmospheric Plasma, Thin Film, Nano-coatings, Surface Engineering, Protein Adhesion IntroductionControlling protein adhesion is an important issue affecting many different fields including bio-processing, medical device implants, biosensors, and drug delivery devices [1,2]. When the surface of a material interacts with a biological environment one of the initial interactions is through protein adhesion [3]. Amongst the factors influencing protein adsorption, are surface chemical functionality and morphology [4]. Amongst the techniques that have been investigated to modify the surfaces of polymers prior to protein adhesion studies have been micro patterning and monomer polymerisation by free radical solution, emulsion, grafting as well as plasma processes [5][6][7][8][9]. It has been demonstrated by a number of authors that plasma techniques enable both the surface functionality and morphology to be tailored [10,11]. This makes it possible to create a surface which will inhibit or enhance the rate of protein adhesion onto a biomaterial surface, without changing the properties of the bulk material [12].One surface chemistry that has received considerable attention for cell and protein adhesion has been acrylic acid. Surfaces containing this coating have been reported in applications ranging from platelet adhesion promotion [13], RGD peptide immobilisation [14], attachment of osteoblast-like [15], fibroblast [16] and keratinocyte [17]...

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Section: Coating Comparison Studysupporting

confidence: 79%

Protein adhesion on water stable atmospheric plasma deposited acrylic acid coatings

Donegan

Dowling

2013

Surface and Coatings Technology

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“…The flow rate of the sputtering gas was controlled by an MKS mass flow controller (MFC) and set at 50 standard cubic centimeters per minute (sccm). The aluminum surface was pre-cleaned and pre-activated in 50 W plasma argon for 5 min [29]. The sputter deposition process was carried out under 50 W RF power for 20 minutes at 20 mTorr.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic and icephobic surfaces prepared by RF-sputtered polytetrafluoroethylene coatings

Jafari

Menini

Farzaneh

2010

Applied Surface Science

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102

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A superhydrophobic and icephobic surface were investigated on aluminum alloy substrate.Anodizing was used first to create a micro-nano structured aluminum oxide underlayer on the alloy substrate. In a second step, the rough surface was coated with RF-sputtered polytetrafluoroethylene (PTFE or Teflon®). Scanning electron microscopy images showed a "bird's nest"-like structure on the anodized surface. The RF-sputtered PTFE coating exhibited a high static contact angle of ~ 165º with a very low contact angle hysteresis of ~ 3º. X-ray photoelectron spectroscopy (XPS) results showed high quantities of CF 3 and CF 2 groups, which are responsible for the hydrophobic behavior of the coatings. The performance of this superhydrophobic film was studied under atmospheric icing conditions. These results showed that on superhydrophobic surfaces ice adhesion strength was 3.5 times lower than on the polished aluminum substrate.

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“…Plasma pre-treatment can be used to clean and activate the surface thus improving the adhesion between the substrate and the thin film coating [66,[138][139][140]. The effect of argon plasma pre-treatment on the water treated and anodized aluminum surfaces before the PP-HMDSO coating is presented in Figures IV.4a-b.…”

Section: Iv-2-process Of Plasma Polymerized Hmdso Coatingmentioning

confidence: 99%

Development of nano-structured icephobic surfaces based on plasma polymerization /

Mobarakeh¹

2014

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Accumulated ice on exposed surfaces leads to operational difficulties and extensive maintenance for power transmission lines, antennas, aircraft, ships, and ground transportation vehicles.In the present study, the low pressure plasma polymerized Hexamethyldisiloxane (PP-HMDSO) film is deposited on aluminum surfaces to create a superhydrophobic coating with icephobic properties. Prior to the deposition of this low surface energy coating, aluminum surfaces were anodized or immersed in boiling water to make micro/nano structured surfaces.Plasma parameters were optimized in order to find the best optimum conditions for having high static contact angle and low contact angle hysteresis. Hence, the Grey-based Taguchi method was used as one of the Design of Experiment (DOE) techniques. The stability of coatings was studied under accelerated aging conditions such as UV degradation, immersion in distilled water and different pH solutions, and several icing/deicing cycles. It was observed that the PP-HMDSO coatings are quite stable against UV exposure and immersion in distilled water. However, the icephobicity of the PP-HMDSO coating deposited on the anodized aluminum decreased after fifteen icing/de-icing cycles.The stability of the developed coating was improved against several icing/de-icing cycles by increasing the deposition time of plasma polymerized coating from 15 to 25 minutes. The results showed that increasing the deposition time of plasma polymerization leads to decrease of the ice adhesion strength of coatings on anodized aluminum while it has no significant effect on the PP-HMDSO coating deposited on a water-treated aluminum surface. Finally, the superhydrophobic PP-HMDSO coating also provides anti-corrosion protection for the aluminum substrate.

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Stable plasma polymerized acrylic acid coating deposited on polyethylene (PE) films in a low frequency discharge (70kHz)

Cited by 78 publications

References 13 publications

Protein adhesion on water stable atmospheric plasma deposited acrylic acid coatings

Protein adhesion on water stable atmospheric plasma deposited acrylic acid coatings

Superhydrophobic and icephobic surfaces prepared by RF-sputtered polytetrafluoroethylene coatings

Development of nano-structured icephobic surfaces based on plasma polymerization /

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