DBD Non-Thermal Plasma Used on Surface Treatment of Polymeric Film for Food Packaging

Cretu, Daniel-Eusebiu; Rusu, Ciprian-Cătălin; Burlică, Radu; Beniugă, Oana; Astanei, Dragoș; Tesoi, Dorin

doi:10.1109/sielmen53755.2021.9600314

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…The DBD reactor has proven its ability to modify different substrates such as metal materials [ 15 , 16 ], wood or MDF boards [ 17 , 18 , 19 ], various polymeric materials used in the textile, food or electronics industries [ 20 , 21 , 22 , 23 ]. Many studies conducted in recent years have shown that treatment by means of an air DBD reactor at atmospheric pressure improves the properties of hydrophilicity, increases the surface tension of polymers, also changing the roughness of their substrates, and has the advantage of uniform and fast treatment of the entire surface [ 24 , 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Treatment of Polymeric Films Used for Printed Electronic Circuits Using Ambient Air DBD Non-Thermal Plasma

et al. 2022

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This study aims to present the properties of the polymeric films after being subjected to DBD plasma treatment in atmospheric conditions. Three different commercial films of polyester (Xerox Inkjet transparencies and Autostat CUS5 Clear film) and polycarbonate (Lexan™ 8010 MC) have been considered for the tests. The surface wettability has been evaluated based on static water contact angle (WCA) for different treatment times varying between 0.2 s and 30 s, the results revealing a maximum WCA decrease compared to a pristine of up to 50% for Xerox films, 75% for Autostat and 70% for Lexan. The persistence of the hydrophilic effect induced by the plasma treatment has also been verified for up to 72 h of storage after treatment, the results indicating a degradation of the treatment effects starting with the first hours after the treatment. The WCA stabilizes to a value inferior to the one corresponding to pristine in the first 24 h after plasma treatment. The adhesion forces, as well as preliminary surface morphology evaluations have been determined for the considered films using atomic force microscopy (AFM). The adhesion forces are increased together with the prolongation of the plasma treatment application time, varying from initial values of 165 nN, 58 nN and 204 nN to around 390 nN, 160 nN and 375 nN for Xerox, Autostat and Lexan films, respectively, after 5 s of DBD treatment. For the considered materials, the results revealed that the plasma treatment determines morphological changes of the surfaces indicating an increase in surface roughness.

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Section: Introductionmentioning

confidence: 99%

Treatment of Polymeric Films Used for Printed Electronic Circuits Using Ambient Air DBD Non-Thermal Plasma

et al. 2022

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“…In order to treat polymeric surfaces, dielectric barrier discharge (DBD) in air at atmospheric pressure has proven effective in modifying a wide range of polymers: PET (Astanei et al, 2022), polycarbonate (PC) (Homola et al, 2017), polyurethane (PU) (Kostov et al, 2010), polypropylene (PP) (Matoušek et al, 2020), biaxially oriented polypropylene (BOPP) and low-density polyethylene (LDPE) (Cretu et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…But sometimes PET is an inappropriate material because the surface energy of this film is considerably low, its surface properties such as wettability, adhesion and printability do not always meet the requirements of specific applications. For this task, ambient air atmospheric plasma treatment is an ecological technology with good results, versatile and economically suitable (Cretu et al, 2021). Advances in DBD reactor technology have also made it possible to treat the entire polymer surface quickly, continuously and evenly (Van Dongen et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

DBD System Operating in Ambient Air for Surface Treatment of Polyethylene Terephthalate Films

Rusu

Cretu

Burlică

et al. 2022

Bulletin of the Polytechnic Institute of Iași. Electrical Engineering, Power Engineering, Electronics Section

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Polymers are materials widely used in many important technologies and applications because of their optical, physical, mechanical, thermal and chemical properties. Polyethylene terephthalate (PET) foil is often used as an insulating material in printed electronics, flexible circuitry, displays, industrial applications, graphic films, or for clinical and healthcare applications. A big inconvenience of PET film is the low surface tension which also implies a low wettability, resulting in poor coating adhesion and poor printing properties. In order to eliminate this disadvantage, a surface treatment was used by means of a dielectric barrier discharge (DBD) operating in ambient air at atmospheric pressure which consisted of a high voltage AC source and two circular metal electrodes 60 mm in diameter. The paper aims are to treat two different PET film substrates designed in this work as PET 1, without thermal treatment, and PET 2 which is heat stabilized. The effect of plasma exposure was assessed by determining the water contact angle by means of an Ossila goniometer and by measuring the surface tension with a special ink. The considered foils were exposed to different DBD treatment times (0.2, 0.5, 1, 5, 10, 30 s) and the evolution of the water contact angle overtime after treatment up to 96 hours was monitored. It was found that the water contact angle of the untreated PET 1 and PET 2 was 74° and 73.5°, respectively, and after 30 s DBD treatment time it decreased to 30.9° and 30°, respectively.

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Efficacy of Atmospheric Non‐thermal Plasma Corona Discharge Under Dry and Wet Conditions on Decontamination of Food Packaging Film Surfaces

Acar,

Doganoz,

Çavdar

et al. 2024

Packag Technol Sci

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Food packaging materials must be sterilized to prevent cross‐contamination of the product. Non‐thermal plasma (NTP) corona discharge can be an effective alternative sterilization method for packaging films. The inactivation efficiency atmospheric NTP corona discharge under dry and wet conditions against vegetative cells of Escherichia coli, Staphylococcus aureus and Bacillus subtilis, spores of B. subtilis and Clostridium sporogenes and fungal spores of Candida albicans, Penicillium expansum and Aspergillus niger on polymeric packaging films were studied. The maximum inactivation of these microorganisms was 5.58, 0.54, 1.51, 1.06, 2.47, 1.73, 2.80, 3.20 and 3.50 log, respectively. Microbial inactivation by the treatments was greatly enhanced under wet conditions. Gram‐negative bacteria were found to be more sensitive to NTP, but spores were more resistant than vegetative bacterial cells. Although fungi were less susceptible than bacteria in dry treatments, they became more sensitive than the Gram‐positive bacteria in wet treatments. Overall, plasma treatments under wet conditions achieved higher microbial inactivation and would be favourable over the dry treatment.

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DBD Non-Thermal Plasma Used on Surface Treatment of Polymeric Film for Food Packaging

Cited by 4 publications

References 16 publications

Treatment of Polymeric Films Used for Printed Electronic Circuits Using Ambient Air DBD Non-Thermal Plasma

Treatment of Polymeric Films Used for Printed Electronic Circuits Using Ambient Air DBD Non-Thermal Plasma

DBD System Operating in Ambient Air for Surface Treatment of Polyethylene Terephthalate Films

Efficacy of Atmospheric Non‐thermal Plasma Corona Discharge Under Dry and Wet Conditions on Decontamination of Food Packaging Film Surfaces

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