Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOx

Li, Hua; Yang, L.; Wang, Zhengduo; Liu, Zhongwei; Chen, Qiang

doi:10.3390/molecules24040780

Cited by 12 publications

(6 citation statements)

References 54 publications

(59 reference statements)

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“…The peak attributed to the Si-O-Si bonds appeared around 1096 cm −1 , while the band at 840 and 800 cm −1 corresponded to the Si-C st and Si-(CH 3 ) out-of-plane bending vibration ( γ ). The spectrum of the plasma-polymerised HMDSO layer deposited onto the leather surface was obtained by spectral subtraction, which confirmed the formation of a polysiloxane based layer on the leather surface [ 41 , 42 , 43 ]. Table 3 summarises the main characteristic bands observed in the mentioned samples [ 44 , 45 , 46 ].…”

Section: Resultsmentioning

confidence: 99%

Hydrophobic Leather Coating for Footwear Applications by a Low-Pressure Plasma Polymerisation Process

Ruzafa-Silvestre¹,

Blasco²,

López³

et al. 2021

Polymers

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The aim of this work is to develop hydrophobic coatings on leather materials by plasma polymerisation with a low-pressure plasma system using an organosilicon compound, such as hexamethyldisiloxane (HMDSO), as chemical precursor. The hydrophobic coatings obtained by this plasma process were evaluated with different experimental techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and standardised tests including colour measurements of the samples, surface coating thickness and water contact angle (WCA) measurements. The results obtained indicated that the monomer had polymerised correctly and completely on the leather surface creating an ultra-thin layer based on polysiloxane. The surface modification produced a water repellent effect on the leather that does not alter the visual appearance and haptic properties. Therefore, the application of the plasma deposition process showed promising results that makes it a more sustainable alternative to conventional functional coatings, thus helping to reduce the use of hazardous chemicals in the finishing process of footwear manufacturing.

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Section: Resultsmentioning

confidence: 99%

Hydrophobic Leather Coating for Footwear Applications by a Low-Pressure Plasma Polymerisation Process

Ruzafa-Silvestre¹,

Blasco²,

López³

et al. 2021

Polymers

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“…The observed changes in the geometry of the modified substrate surfaces can be a reflection of the dif ferent temperatures of the treatment processes in RF and DBD plasma. Modifications in volving DBD plasma are low-temperature processes [26,27,40], which do not cause signif icant changes in the geometric structure of the modified PDMS. In the case of modifica tions performed using RF PACVD equipment, the temperature of the modified surfac can exceed 100 °C [42].…”

Section: Surface Geometrical Structurementioning

confidence: 99%

“…The production of carbon coatings on the surface of polymer materials is usually performed using plasma techniques, e.g., the plasma-assisted chemical vapour deposition (PA CVD) method assisted with direct current (DC) [ 23 ] or radio-frequency (RF) discharge [ 3 , 7 , 16 , 17 , 24 , 25 ]. In addition to these technologies, the surface of polymer materials is also modified using dielectric barrier discharge (DBD) plasma [ 26 , 27 , 28 ], which produces effects similar to those achieved with low-pressure methods.…”

Section: Introductionmentioning

confidence: 99%

“…Plasma is used to modify polymer materials such as polyethylene (PE), polyurethanes, poly(ether-ether-ketone) (PEEK), rubbers and polydimethylsiloxane (PDMS) [ 3 , 7 , 16 , 19 , 20 , 21 , 22 , 26 , 29 , 30 , 31 ]. In the case of the last, the most frequent processes include etching [ 16 , 32 , 33 ], cross-linking [ 16 , 34 , 35 ] and the deposition of thin coatings (e.g., DLC, gold or SiOx) [ 20 , 21 , 22 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

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Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates

et al. 2021

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The processes of the deposition of carbon coatings on PDMS (polydimethylsiloxane) substrates using plasma techniques are widely used in a large number of studies, in applications ranging from electronic to biological. That is why the potential improvement of their functional properties, including tribological properties, seems very interesting. This paper presents an analysis of the impact of plasma pre-treatment on the properties of the produced diamond-like carbon (DLC) coatings, including changes in the coefficients of friction and wear rates. The initial modification processes were performed using two different techniques based on low-pressure plasma (RF PACVD, radio-frequency plasma-assisted chemical vapour deposition) and dielectric barrier discharge (DBD) plasma. The effects of the above-mentioned treatments on the geometric structure of the PDMS surface and its water contact angles and stability over time were determined. The basic properties of the DLC coatings produced on unmodified substrates were compared to those of the coatings subjected to plasma pre-treatment. The most interesting effects in terms of tribological properties were achieved after the DBD process and production of DLC coatings, achieving a decrease in wear rates to 2.45 × 10−8 mm3/Nm. The tests demonstrate that the cross-linking of the polymer substrate occurs during plasma pre-treatment.

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“…The oxygen plasma modification (OPM) process with only a few minutes reaction time results in an environmentally safe and minimal material loss compared to chemical methods. By using non-thermal plasma method, which produces energetic electrons, ions and active radicals, active functional groups can be attached to the sample surface by improving the structure of the sample [13-23].…”

Section: Introductionmentioning

confidence: 99%

Surface modification of coal sample with oxygen plasma treatment

Ölçenoğlu

Saka

2019

Surface Engineering

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In this study, it was aimed to modify the coal sample (CS) with oxygen plasma treatment for the first time. The plasma treatment process on the CS was evaluated by malachite green (MG) dye adsorption. The oxygen plasma treatment on the surface of CS was analysed by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and nitrogen adsorption. It was found from the analysis results that the number of oxygenated groups on the CS surface increased. The mechanism for oxygen plasma on the CS was evaluated. It was concluded that oxygen plasma treatment was suitable for surface modification of the CS and that the adsorbent obtained was effective for MG adsorption.

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Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOx

Cited by 12 publications

References 54 publications

Hydrophobic Leather Coating for Footwear Applications by a Low-Pressure Plasma Polymerisation Process

Hydrophobic Leather Coating for Footwear Applications by a Low-Pressure Plasma Polymerisation Process

Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates

Surface modification of coal sample with oxygen plasma treatment

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