Surface modification of polyester films by RF plasma

Gupta, Bhuvanesh; Hilborn, Jöns; Hollenstein, Ch.; Plummer, C. J. G.; Houriet, R.; Xanthopoulos, N.

doi:10.1002/1097-4628(20001031)78:5<1083::aid-app170>3.0.co;2-5

Cited by 197 publications

(125 citation statements)

References 18 publications

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“…It was found that the roughness as measured using peak to valley (R p-v ), root mean squared (R q ) and average roughness (R a ) approximately doubles for the plasma treated APET samples. The roughened surface morphology is due to energetic species within the plasma impacting on the polymer surface [29][30][31]. …”

Section: Surface Morphology Of Plasma Treated Apetmentioning

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: Surface Morphology Of Plasma Treated Apetmentioning

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 hydrophilicity of plasma-treated surface will degrade over time. However, proper storage condition has been shown to slow down the degradation [4]. The mechanism will be further investigated to obtain superhydrophilic polyester with satisfactory shelf time.…”

Section: Discussion and Future Workmentioning

confidence: 99%

“…This method has been widely used to improve adhesion [3]. Argon plasma followed by oxygen treatment has been reported to change the contact angle of polyester to as low as 33.8° [4]. The hydrophilicity is induced by polar functional groups such as -OH and -COOH.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophilic anti-fog polyester film by oxygen plasma treatment

Nie

Patel

Sun

et al. 2009

2009 4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems

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-Superhydorphilic polyester film has been obtained by oxygen plasma treatment to maintain optical clarity under high relative humidity. The original and treated films are simultaneously exposed to the vapor from hot water. The latter keeps its optical clarity because the condensed water formed a thin film on it instead of droplets for the former. Compared with the widely used coating method, plasma treatment to obtain anti-fog polymer film has the potential for mass production, lower cost, better compatibility with thermal extrusion process, and safer for food packaging. It can also be employed to improve the visualization of microfluidic reactors under high relative humidity.

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“…plasma incorporates hydrophilic functional groups onto the polymer surfaces thereby increasing wettability and surface energy (Bhat et al, 2011;Navaneetha et al, 2010;P´ıchal and Klenko, 2009). It has been reported that the treatment carried out in inert gases like Ar introduces oxygen moieties onto the polymer surface because of post plasma exposure of samples to atmosphere (Deshmukh and Bhat, 2003(b); Gupta et al, 2000). Therefore, IR spectra of N 2 and O 2 plasma treated nylon samples is not given here.…”

Section: Ftir Studymentioning

confidence: 99%