Effect of surface modification of high-density polyethylene by direct current and radio frequency glow discharge on wetting and adhesion characteristics

Bhowmik, Shantanu; Chaki, T. K.; Ray, S.; Hoffman, F. M.; Dorn, Lutz

doi:10.1007/s11661-004-0012-0

Cited by 24 publications

(24 citation statements)

References 17 publications

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“…In addition the root mean square (RMS) roughness of untreated surface was 0.68 nm which got increased rapidly up to 14.13 nm when treated in air plasma. These morphological changes may be due to the removal of top few monolayers of the polymer film, caused by the bombardment of plasma particles on the surface of PET film [2,12]. This resulted in an apparent increase in the surface roughness causing improvement in wettability and bonding strength.…”

Section: Morphological and Compositional Analysis: Afm And Xps Resultsmentioning

confidence: 99%

“…The introduction of oxygen containing polar groups on the polymer surface may be the main reason for the hydrophilic improvement. Since PET films were treated in air plasma, it is obvious that some nitrogen-containing group will be incorporated onto the surface [2,4,9]. For untreated polymer films, there is no N1s peak but for plasma treated one, there appears to be a small N1s peak.…”

Section: Morphological and Compositional Analysis: Afm And Xps Resultsmentioning

confidence: 99%

“…In order to assure good adhesion between the polymer and coating, the surface of the polymer must be modified. Several surface modification methods are employed to modify the polymer surfaces, such as chemical treatments, thermal treatment, mechanical treatment, and electrical treatments (corona or glow discharge plasma treatment) [2]. Of the above-mentioned methods, low temperature glow discharge plasmas have been widely used to modify polymer surface properties without changing the bulk properties.…”

Section: Introductionmentioning

confidence: 99%

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Effects of operating parameters on DC glow discharge plasma induced PET film surface

Pandiyaraj

Selvarajan

Deshmukh

2010

J. Phys.: Conf. Ser.

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Section: Morphological and Compositional Analysis: Afm And Xps Resultsmentioning

confidence: 99%

Section: Morphological and Compositional Analysis: Afm And Xps Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of operating parameters on DC glow discharge plasma induced PET film surface

Pandiyaraj

Selvarajan

Deshmukh

2010

J. Phys.: Conf. Ser.

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“…7 Recently, studies on improving surface wettability on PP films using various surface modification techniques have been reported. 8,9 In the present study DC glow discharge 10 was employed to study the effect on the surface energy as well as resistivity of a thin 100 mm film of PP. The surface energy of liquid adhesives and polymers is about 100 mJ/m 2 , while for ceramics and metals it is about 500 mJ/m 2 .…”

Section: Introductionmentioning

confidence: 99%

Effect of DC glow discharge treatment on the surface energy and surface resistivity of thin film of polypropylene

Kumar

Singh

Kumar

et al. 2007

J of Applied Polymer Sci

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A change in the surface energy and surface resistivity of a thin film of polypropylene (PP) of thickness 100 mm was investigated, using direct current (DC) glow discharge. The thin film of the PP was treated for various discharge powers and treatment time and the modification in the surface energy and the surface resistivity was observed. To investigate the modification in the surface energy after DC glow discharge treatment, contact angle of two test liquids formamide and de-ionized water over the surface of PP film was measured. By measuring the contact angle the change in surface energy and its two polar and dispersive components have been measured. It was observed that at a given power level of DC glow discharge surface energy and its polar component increases with increase of the treatment time, attains a maximum value, and then becomes almost constant. Correspondingly, with increase in surface energy, a decrease in surface resistivity was observed. Also, a change in surface morphology was observed by atomic force microscopy and by FT-IR spectra generation of polar groups at the surface of PP film.

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“…It was found that treatment in an oxygen-containing plasma resulted in the buildup of polar oxygen-containing groups on the surface. This treatment significantly increases the surface energy of PE and improved its wettability and adhesion characteristics [4][5][6][7][8][9][10]. Ponomarev et al [11][12][13][14][15] studied in detail the formation of radicals, double bonds, and intermolecular crosslinks and hydrogen evolution during the treatment of PE in air, hydrogen, and helium plasmas.…”

mentioning

confidence: 99%

Modification and Degradation of Polyethylene under the Action of Oxygen Plasma

et al. 2005

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The modification of polymers by treatment in a lowtemperature plasma changes the surface properties over a wide range and considerably extends the range of application of polymer materials [1][2][3]. A great number of publications were devoted to various aspects of the plasma-chemical modification of polyethylene (PE). It was found that treatment in an oxygen-containing plasma resulted in the buildup of polar oxygen-containing groups on the surface. This treatment significantly increases the surface energy of PE and improved its wettability and adhesion characteristics [4][5][6][7][8][9][10]. studied in detail the formation of radicals, double bonds, and intermolecular crosslinks and hydrogen evolution during the treatment of PE in air, hydrogen, and helium plasmas. It was found that biologically active substances can be immobilized on the surface of modified PE and the biocompatibility of medical products can be enhanced [16][17][18][19][20]. It is evident that any applied effects of plasma treatment result from a set of structural and chemical changes in the modified polymer layer. The industrial engineering of plasma processing requires the understanding of the mechanisms of processes responsible for the desired effects of plasma treatment. Unfortunately, currently available knowledge is insufficient. This is primarily due to the complexity of analysis of a nonequilibrium system that includes not only a chemically active plasma but also a modified layer of a polymer material. A detailed analysis of processes in this system requires the joint consideration of both the generation of active species in plasma and the reactions of these species with the polymer.In this work, we attempted to analyze the mechanisms of PE oxidation and degradation in a reducedpressure oxygen plasma on the basis of an array of experimental data that characterize both the composition of gaseous products and the chemical composition of the modified surface layer of the polymer. EXPERIMENTALThe plasma was generated by initiating a dc discharge in a cylindrical reactor of S-52 glass with the radius R = 1.5 cm. In the experiments, the gas pressure ( p ) was varied over the range 30-300 Pa; the discharge current was 50 mA, and the linear velocity of a gas flow was 30 cm/s on an NTP basis.The composition of gaseous products, the product formation rates, and the rate of oxygen consumption for polymer oxidation were measured using an MX 7304 monopole mass spectrometer. In the course of polymer treatment, gas from the plasma zone was continuously sampled into the ion source of the mass spectrometer through a diaphragm 16 µ m in diameter. The massspectrometric system was preliminarily calibrated with pure gases ( é 2 , ëé 2 , ëé, ç 2 é , and ç 2 ). Both main and fragment ions were detected; the latter were taken into account in the quantitative determination of component concentrations. The measurements were performed after establishing a quasi-steady-state mode of the plasma-chemical process, that is, when the intensities of lines corresponding...

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Effect of surface modification of high-density polyethylene by direct current and radio frequency glow discharge on wetting and adhesion characteristics

Cited by 24 publications

References 17 publications

Effects of operating parameters on DC glow discharge plasma induced PET film surface

Effects of operating parameters on DC glow discharge plasma induced PET film surface

Effect of DC glow discharge treatment on the surface energy and surface resistivity of thin film of polypropylene

Modification and Degradation of Polyethylene under the Action of Oxygen Plasma

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