Antibacterial treatment of LDPE with halogen derivatives via cold plasma

Popelka, Anton; Novák, Igor; Lehock, M.; Bílek, František; Kleinová, Angela; Mozeti, Miran; Chodák, Ivan

doi:10.3144/expresspolymlett.2015.39

Cited by 12 publications

(7 citation statements)

References 30 publications

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“…Since the chemical modifications have aged over time, influencing the polar coordinate more clearly, due to the formation of functional groups with oxygen, the physical modification tends to be maintained, with the aging of morphological modifications not evident in polymers [ 1 , 33 ]. This change in surface roughness is due to the etching action promoted by the species present in the plasma, as reported in the literature [ 67 , 72 , 73 , 74 , 75 ].…”

Section: Resultsmentioning

confidence: 99%

“…The incorporated functional groups were verified, by the authors, using the XPS or FTIR techniques, with the associated reduction of the peak of the C–C and C–H bonds [ 5 , 12 , 32 ]. These modifications have been made in polymers such as: polypropylene [ 11 , 31 ], polyethylene [ 3 , 12 , 32 , 33 ], poly (lactic acid) [ 4 , 34 ], polyester [ 9 , 26 , 35 ], and others [ 10 , 29 , 36 , 37 , 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

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Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

et al. 2020

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In this work, the plasma was used in the dielectric barrier discharge (DBD) technique for modifying the high-density polyethylene (HDPE) surface. The treatments were performed via argon or oxygen, for 10 min, at a frequency of 820 Hz, voltage of 20 kV, 2 mm distance between electrodes, and atmospheric pressure. The efficiency of the plasma was determined through the triple Langmuir probe to check if it had enough energy to promote chemical changes on the material surface. Physicochemical changes were diagnosed through surface characterization techniques such as contact angle, attenuated total reflection to Fourier transform infrared spectroscopy (ATR-FTIR), X-ray excited photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). Plasma electronics temperature showed that it has enough energy to break or form chemical bonds on the material surface, impacting its wettability directly. The wettability test was performed before and after treatment through the sessile drop, using distilled water, glycerin, and dimethylformamide, to the profile of surface tensions by the Fowkes method, analyzing the contact angle variation. ATR-FTIR and XPS analyses showed that groups and bonds were altered or generated on the surface when compared with the untreated sample. The AFM showed a change in roughness, and this directly affected the increase of wettability.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

et al. 2020

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“…Plasma treatments cause several chemical and physical changes on the plasma-polymer interface, which improve the surface properties [ 1 , 2 , 3 , 4 , 5 , 6 ]. Plasma-induced effects on the polymer surface are nowadays exploited in surface functionalization of the packaging polymers for promoting adhesion or sometimes anti-adhesion [ 7 ], enhanced printability [ 8 ], sealability [ 9 ], assuring anti-mist properties, improving the polymer’s resistance to mechanical failure [ 1 ], and adhesion of antibacterial coatings [ 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Modification of Physico-Chemical Properties of Acryl-Coated Polypropylene Foils for Food Packaging by Reactive Particles from Oxygen Plasma

et al. 2018

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This investigation was focused on the influence of long-living neutral reactive oxygen species on the physico-chemical properties of acryl-coated polypropylene foils for food packaging. Reactive species were formed by passing molecular oxygen through a microwave discharge and leaking it to a processing chamber of a volume of 30 L, which was pumped by a rotary pump. The density of neutral O-atoms in the chamber was tuned by adjustment of both the effective pumping speed and the oxygen leak rate. The O-atom density was measured with a catalytic probe and was between 3 × 1018 and 5 × 1019 m−3. Commercial foils of biaxially oriented polypropylene (BOPP) coated with acrylic/ poly(vinylidene chloride) (AcPVDC) were mounted in the chamber and treated at room temperature by O atoms at various conditions, with the fluence between 1 × 1021 and 3 × 1024 m−2. The evolution of the surface wettability versus the fluence was determined by water contact angle (WCA) measurements, the formation of functional groups by X-ray photoelectron spectroscopy (XPS), and the morphology by atomic force microscopy (AFM). The WCA dropped from the initial 75° to approximately 40° after the fluence of a few 1022 m−2 and remained unchanged thereafter, except for fluences above 1024 m−2, where the WCA dropped to approximately 30°. XPS and AFM results allowed for drawing correlations between the wettability, surface composition, and morphology.

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“…The introduced groups (CO, COOH, OH, NH 2 , etc.) could be subsequently used to bind other molecules to attain the desired properties …”

Section: Introductionmentioning

confidence: 99%

“…could be subsequently used to bind other molecules to attain the desired properties. [12,29,30] In this work, we present the surface modification of PMMA by Diffuse Coplanar Surface Dielectric Barrier Discharge (DCSDBD) operated in atmospheric pressure air, which was successfully employed in our earlier work for enhancing the hydrophilicity and thus the wettability of polytetrafluoroethylene (PTFE). [31] The aim of surface modification is to endow antimicrobial properties of the PMMA surface.…”

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confidence: 99%

Solvent‐ and catalysts‐free immobilization of tannic acid and polyvinylpyrrolidone onto PMMA surface by DBD plasma

Klébert

Károly

Késmárki

et al. 2017

Plasma Processes & Polymers

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Polyvinylpyrrolidone (PVP) and tannic acid (TAN) macromolecules were attached to polymethyl methacrylate (PMMA) surface in a two-step approach in order to establish a tailored tissue-friendly surface layer. First PMMA surface was activated by an air diffuse coplanar surface barrier discharge plasma and subsequently coated with these macromolecules. PVP and TAN which has antibacterial effects are widely used in food and drug industry, however have never applied for polymer surface modification. Throughout characterization measurements confirm that during plasma treatment oxygen containing functional groups (-OH, -C=O, -COOH) incorporate in the surface. 1HNMR spectroscopy verified the strong H-bonds between PVP and TAN, which rendered the layer-by-layer as- Many researches have been carried out to overcome this shortcoming of polymers including PMMA.A common approach to make the surface more hydrophilic is to modify the surface chemistry. Due to the chemical inertness of the polymeric materials their surface modification means that first they shall undergo surface activation before subsequent covalent functionalisation (Fig.1.). It was found that a hydrophilic surface created by surface modification and formation of new functional groups on the surface by oxygen plasma treatment greatly inhibited bacterial adhesion to PMMA surface [8].The hydrophilic properties, however, usually does not last long due to the ageing effect of such treatment [9]. The speed of ageing is affected by several operating factors of the treatment, includ-

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Antibacterial treatment of LDPE with halogen derivatives via cold plasma

Cited by 12 publications

References 30 publications

Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

Modification of Physico-Chemical Properties of Acryl-Coated Polypropylene Foils for Food Packaging by Reactive Particles from Oxygen Plasma

Solvent‐ and catalysts‐free immobilization of tannic acid and polyvinylpyrrolidone onto PMMA surface by DBD plasma

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