Reaction of oxygen plasma active species with polyethylene

Шикова, Т. Г.; Рыбкин, В. В.; Титов, В. А.; Choi, Ho‐Suk

doi:10.1134/s0018143906050122

Cited by 8 publications

(14 citation statements)

References 3 publications

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“…9) is due to the O-H stretch of alcohols. 21,23,24 The band at 1640 cm -1 (no. 5) is assigned to the CdO stretch of hydrogen bonded carboxylic acid groups.…”

Section: Resultsmentioning

confidence: 99%

“…21,23,24 It could be due to CdC stretches, but this is thought to be less likely given the nature of the plasma treatment. According to Shikova et al, 23 CdC double bonds can form on the surface of plasma-treated polyethylene when hydrogen atoms are abstracted by bombardment with UV irradiation and charged particles. However, the afterglow from the atmospheric pressure plasma only contains neutral species, and there is little UV irradiation from the source.…”

Section: Resultsmentioning

confidence: 99%

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Surface Analysis of Polymers Treated by Remote Atmospheric Pressure Plasma

Gonzalez

Hicks

2009

Langmuir

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The surfaces of high-density polyethylene (HDPE), poly(methyl methacrylate) (PMMA), and polyethersulfone (PES) were treated with a low-temperature, atmospheric pressure oxygen and helium plasma. The polymers were exposed to the downstream afterglow of the plasma, which contained primarily oxygen atoms and metastable oxygen molecules ((1)Delta(g) O(2)), and no ions or electrons. X-ray photoelectron spectroscopy (XPS) of HDPE revealed that 20% of the carbon atoms were converted into oxidized functional groups, with about half of these being carboxylic acids. Attenuated total reflection infrared spectroscopy of all three polymers was obtained in order to determine the types of functional groups formed by atmospheric plasma exposure. It was found that the polymers were rapidly oxidized with addition of alcohols, ketones, and carboxylic acids to the carbon backbone. Chain scission occurred on HDPE and PMMA, while on PES the aromatic groups underwent ring-opening and insertion of carboxylic acid.

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“…9) is due to the O-H stretch of alcohols. 21,23,24 The band at 1640 cm -1 (no. 5) is assigned to the CdO stretch of hydrogen bonded carboxylic acid groups.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Surface Analysis of Polymers Treated by Remote Atmospheric Pressure Plasma

Gonzalez

Hicks

2009

Langmuir

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“…Prior to deposition of the AuNPs, the substrate surface was functionalized by means of an oxidative treatment. This was done either by applying an oxygen plasma [26][27][28] or by immersing the substrates into a solution of potassium permanganate in concentrated sulfuric acid. [29,30] Substrates, which were not oxidized, could not be coated with uniform and sufficiently conductive AuNP films.…”

Section: Resultsmentioning

confidence: 99%

Networked Gold‐Nanoparticle Coatings on Polyethylene: Charge Transport and Strain Sensitivity

Voßmeyer¹,

Stolte²,

Ijeh³

et al. 2008

Adv Funct Materials

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Networked films, comprising gold nanoparticles (ca. 4 nm core diameter) and 1,9‐nonanedithiol, are deposited onto oxidized low‐density polyethylene (LDPE) substrates via layer‐by‐layer self‐assembly. Scanning electron microscopy and transmission electron microscopy images reveal a compact coating with a granular, nanoscale morphology. Conductance measurements at variable temperature are consistent with an Arrhenius‐type activation of charge transport (activation energy: 52 meV). The excellent mechanical robustness of the coatings allows for studying their potential application as strain gauges. Expanding the films by up to 3% is accompanied by a reversible and approximately linear increase in resistance of up to approximately 50% (gauge factor ca. 17). Analyzing the results with an activated tunneling model suggests that the average increase in interparticle distances is significantly smaller than the geometric expansion at the substrate surface.

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“…Such reaction mechanisms, in which atomic oxygen simultaneously participates in both formation and destruction reactions, can probably limit the extent of surface oxidation and the depth of the oxidized layer in the case of the application of air corona,7 oxygen low‐pressure plasma,8 and UV irradiation 9. This assumption was experimentally confirmed in the study by Shikova et al,10 in which it was shown that the joint action of the atomic oxygen, O 2 metastable (a 1 Δ g ) and ground ( X 3 Σ g ) states in flowing afterglow of O 2 discharge onto the polyethylene surface resulted in simultaneous surface oxidation and etching, while the action of metastable (a 1 Δ g ) and ground ( X 3 Σ g ) states resulted mainly in the oxidation. In the afterglow, the etching rates were lower than in plasma and no formation of end double bonds as a result of chain scission was observed.…”

Section: Introductionmentioning

confidence: 71%

A Comparative Study of Poly(propylene) Surface Oxidation in DC Low‐Pressure Oxygen and Water Vapor Discharges and in Flowing Afterglow of Water Vapor Discharge

Рыбкин¹,

Kuvaldina²,

Grinevich³

et al. 2008

Plasma Processes & Polymers

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The influence of direct current (DC) discharges in oxygen and water vapor and in a flowing afterglow of water vapor discharge onto the surface of poly(propylene) (PP) films was studied. The surface properties of PP were characterized by Fourier transform infrared by attenuated total reflectance (FTIR/ATR), X‐ray photoelectron spectroscopy (XPS), Atomic force microscopy (AFM), and contact angle measurement. The action of oxygen and water vapor plasma was found to be similar in terms of the composition of functional groups formed. Unlike plasma action, the PP surface treatment in water vapor discharge afterglow provided a more uniform composition of oxygen‐containing groups and greater depth of the modified layer. The formation of alcohol, carbonyl, and carboxyl groups has been observed. The treatment of PP films led to the increase in surface‐free energy, the polymer surface becoming more smooth and homogeneous.

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Reaction of oxygen plasma active species with polyethylene

Cited by 8 publications

References 3 publications

Surface Analysis of Polymers Treated by Remote Atmospheric Pressure Plasma

Surface Analysis of Polymers Treated by Remote Atmospheric Pressure Plasma

Networked Gold‐Nanoparticle Coatings on Polyethylene: Charge Transport and Strain Sensitivity

A Comparative Study of Poly(propylene) Surface Oxidation in DC Low‐Pressure Oxygen and Water Vapor Discharges and in Flowing Afterglow of Water Vapor Discharge

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