Thermal stability studies of atmospheric plasma deposited siloxane films deposited on Vycor™ glass

Ramamoorthy, Amsarani; Rahman, Mohd Yusri Abd; Mooney, Damian A.; MacElroy, J. M. D.; Dowling, Denis P.

doi:10.1016/j.surfcoat.2008.03.003

Cited by 21 publications

(15 citation statements)

References 28 publications

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“…Chain scissioning of the long polymer molecules may also occur, thus reducing the level of polymer crystallinity and generating chemical sites which are available for bonding with an adhesive. For example the incorporation of functional groups containing oxygen and nitrogen into the surface has been demonstrated after plasma activation [9]. It has been shown that even if only a few chemical sites are created there will be a large increase in adhesive strength [10].…”

Section: Ldpe / Pet Top Film (Ldpe In Grey)mentioning

confidence: 99%

Atmospheric pressure plasma treatment of amorphous polyethylene terephthalate for enhanced heatsealing properties

Dowling

Tynan

Ward³

et al. 2012

International Journal of Adhesion and Adhesives

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An atmospheric pressure plasma system has been used to treat amorphous polyethylene terephthalate (APET) to enhance its healseal properties to a polyethylene terephthalate (PET) film. The plasma treated APET sheet material was thermoformed into trays for use in the food packaging industry and heatsealed to a PET film. The heatsealing properties of the resulting package were assessed using the burst test technique. It was found that the plasma treatment significantly enhanced the adhesive properties and an increase in burst pressure from 18 to 35 kPa was observed for plasma treated food trays. The APET surface chemistry was assessed after plasma treatment where it was found that the plasma treatment had affected an increase in oxygen and an addition of nitrogen species to the polymer surface. The surface roughness (R a ) of the plasma treated samples was also observed to increase from 0.4 to 0.9 nm after plasma treatment. IntroductionHeatsealed polymer trays are widely used for packaging food products, particularly meat and fish [1]. In the heat sealing process a polymer top film is applied to the polymer tray under elevated temperature and pressure in order to enclose the food product in an airtight environment [2]. The conventional method for creating a strong bond between a food tray and a top film is to use a co-extruded heatseal layer ( Figure 1).

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Section: Ldpe / Pet Top Film (Ldpe In Grey)mentioning

confidence: 99%

Atmospheric pressure plasma treatment of amorphous polyethylene terephthalate for enhanced heatsealing properties

Dowling

Tynan

Ward³

et al. 2012

International Journal of Adhesion and Adhesives

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“…The increasing surface roughness was a result of increasing number of particulates deposited on the coating. Particulate formation is commonly associated with gas phase reaction [14]. As discussed previously, the addition of the precursor quenches the main emission lines of N 2 , N 2 ?…”

mentioning

confidence: 86%

“…In recent years, coating technology has expanded to encompass coating deposition using atmospheric pressure plasma techniques. The introduction of a liquid precursor is typically carried out in the form of an aerosol via direct injection [14,15] or as a gas via a bubbler system [16,17]. Extensive analysis of coatings deposited in DBD systems has also enabled a detailed understanding of the precursor polymerisation, dissociation and deposition [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Correlation Between the Electrical and Optical Properties of an Atmospheric Pressure Plasma During Siloxane Coating Deposition

Twomey¹,

Nindrayog

Niemi

et al. 2010

Plasma Chem Plasma Process

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The effect of varying process parameters on atmospheric plasma characteristics and properties of nanometre thick siloxane coatings is investigated in a reel-to-reel deposition process. Varying plasma operation modes were observed with increasing applied power for helium and helium/oxygen plasmas. The electrical and optical behaviour of the dielectric barrier discharge were determined from current/voltage, emission spectroscopy and time resolved light emission measurements. As applied power increased, multiple discharge events occurred, producing a uniform multi-peak pseudoglow discharge, resulting in an increase in the discharge gas temperature. The effects of different operating modes on coating oxidation and growth rates were examined by injecting hexamethyldisiloxane liquid precursor into the chamber under varying operating conditions. A quenching effect on the plasma was observed, causing a decrease in plasma input power and emission intensity. Siloxane coatings deposited in helium plasmas had a higher organic component and higher growth rates than those deposited in helium/oxygen plasmas.

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“…In Figure 2, the regime between A and E on the voltage-current characteristic represents this dark discharge regime (6). The background ionization of the gas occurs in the region A-B.…”

Section: Dark Dischargesmentioning

confidence: 98%

Surface Processing Using Cold Atmospheric Pressure Plasmas

Dowling

2014

Comprehensive Materials Processing

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Thermal stability studies of atmospheric plasma deposited siloxane films deposited on Vycor™ glass

Cited by 21 publications

References 28 publications

Atmospheric pressure plasma treatment of amorphous polyethylene terephthalate for enhanced heatsealing properties

Atmospheric pressure plasma treatment of amorphous polyethylene terephthalate for enhanced heatsealing properties

Correlation Between the Electrical and Optical Properties of an Atmospheric Pressure Plasma During Siloxane Coating Deposition

Surface Processing Using Cold Atmospheric Pressure Plasmas

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