Esca applied to polymers. XXIII. RF glow discharge modification of polymers in pure oxygen and helium–oxygen mixtures

Clark, D. T.; Dilks, A.

doi:10.1002/pol.1979.170170404

Cited by 233 publications

(78 citation statements)

References 21 publications

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“…In our samples such additional oxygen could arise from the oxidized inconel. Significantly, according to the model of Clark [13] one would assign phenols and ethers to region B, which is in contrast to the results of XPS analysis. To the best of our knowledge carbonyls directly attached to the p-system, e.g.…”

Section: Effect Of Step-wise Heating On Xps and Tpd Results And Theircontrasting

confidence: 50%

“…Although the shape of the spectra changes dramatically for the ozone-treated sample, all spectra could be deconvoluted with the set of functions described in Section 3.2, first suggested by Clark et al [12,13]. The development of the intensity of each O1s peak in the deconvoluted O1s spectra was calculated and is shown in Fig.…”

Section: Effect Of Step-wise Heating On Xps and Tpd Results And Theirmentioning

confidence: 99%

“…Models based on greater differentiation use up to five or more peaks for the O1s deconvolution [10]. Interestingly, only a few studies have been reported where an examination of samples with known oxygen-functional groups have been conducted [12][13][14]. Considering the early studies on polymers by Clark et al [12,13] it was shown that the binding energy range of O1s is about 2 eV, however accounting for carbonates and several, only calculated, peroxo-species it increases to $2.5 eV.…”

Section: Introductionmentioning

confidence: 99%

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Combined XPS and TPD study of oxygen-functionalized carbon nanofibers grown on sintered metal fibers

Rosenthal

Ruta

Schlögl

et al. 2010

Carbon

195

126

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A B S T R A C TA composite material consisting of carbon nanofibers (CNFs) grown on sintered metal fiber filters was modified by H 2 O 2 or plasma-generated O 3 . Coupling temperature programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS) techniques in the same UHV apparatus allowed the direct correlation of the nature of the created O-functional groups and their evolution as CO and CO 2 upon heating. The two oxidative treatments yielded different distributions of O-containing groups. The relative contribution of oxidized carbon was very low in the C1s region, hence the functional groups were more robustly analyzed through the O1s region. The comparison of the released oxygen by integration of the TPD CO, CO 2 and H 2 O spectra with the intensity loss of the XPS O1s spectra showed good agreement. In order to fit the data adequately, the set of O1s spectra was deconvoluted in at least four peaks for the differently activated samples. Finally, it was shown that functional groups formed by H 2 O 2 -treatment (mostly non-phenolic OH groups) are more thermally stable than those formed by O 3 -treatment. The latter treatment increases the concentration of carboxylic functionalities, which decompose at temperatures < 800 K;O 3 -activated CNFs should therefore show a more pronounced acidic behavior.

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Section: Effect Of Step-wise Heating On Xps and Tpd Results And Theircontrasting

confidence: 50%

Section: Effect Of Step-wise Heating On Xps and Tpd Results And Theirmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combined XPS and TPD study of oxygen-functionalized carbon nanofibers grown on sintered metal fibers

Rosenthal

Ruta

Schlögl

et al. 2010

Carbon

195

126

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“…The plasma initiated both chemical modification process and degradation reaction on every polymeric material. There are various active species such as highly excited electron, ion, and radical species in the plasma [40]. Hence, an ATR-FTIR spectrum is an appropriate technique.…”

Section: Atr-ftir Analysis Of Plasma-treated Pvdf and Pmma Filmsmentioning

confidence: 99%

Surface characterization of air plasma treated poly vinylidene fluoride and poly methyl methacrylate films

Pawde

Deshmukh

2009

Polymer Engineering & Sci

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In this investigation, the surface modification of poly vinylidene fluoride (PVDF) and poly methyl methacrylate (PMMA) film induced by air plasma has been investigated using contact angle measurement, electron spectroscopy for chemical analysis (ESCA), and ATR‐FTIR spectroscopy. Plasma treatment affects the polymer surfaces to an extent of several hundreds to several thousand angstroms deep, and the bulk properties of the polymer substrate are never modified because of its low penetration range. Plasma surface treatment also offers the advantage of greater chemical flexibility. The plasma exposure leads to weight loss and changes in the chemical composition of the polymer film surfaces. The contact angle of water shows decrease in surface wettability of PVDF and PMMA as the treatment time increases. The improvement in adhesion was studied by measuring T‐peel strength. In addition, printability of plasma treated PVDF and PMMA was studied by cross test method. It was found that printability increases considerably for plasma treatment of short duration. Surface energy and surface roughness can be directly correlated to the improvement in the aforementioned surface related properties. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers

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“…The effect of plasma treatment duration time has been studied in nitrogen when aPS films are deposited close to the negative glow or the positive column. Results are presented in Figure 3 where a well-known behaviour is observed: the wettability of the surface increases as a function of the treatment duration time to reach a plateau in several seconds 9,22 . The value of this plateau is obtained here for a contact angle relative variation close to 0.7.…”

Section: Atomic Force Microscopy (Afm)mentioning

confidence: 85%

Analysis of microscopic modifications and macroscopic surface properties of polystyrene thin films treated under d.c. pulsed discharge conditions

Larrieu

Clément

Held

et al. 2005

Surf. Interface Anal.

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Using a DC pulsed plasma for the polymer surface treatment allows the attainment of macroscopic modifications of the surface such as an important increase of the wettability. In the same time microscopic variations of the surface structure are mainly linked to low depth chemical modifications even if very weak roughness changes appear.As a consequence this technique presents two major interests. The first one is an economical interest because of the low power consumption compared to other techniques like radiofrequency or microwaves plasmas. The second one is the very significant treatment (macroscopic) realized in soft conditions without degradation of the polymer.These results composed of macroscopic and microscopic studies on polystyrene surfaces may allow to establish a macroscopic interpretation of the interaction between polymer and the DC pulsed plasma.

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Esca applied to polymers. XXIII. RF glow discharge modification of polymers in pure oxygen and helium–oxygen mixtures

Cited by 233 publications

References 21 publications

Combined XPS and TPD study of oxygen-functionalized carbon nanofibers grown on sintered metal fibers

Combined XPS and TPD study of oxygen-functionalized carbon nanofibers grown on sintered metal fibers

Surface characterization of air plasma treated poly vinylidene fluoride and poly methyl methacrylate films

Analysis of microscopic modifications and macroscopic surface properties of polystyrene thin films treated under d.c. pulsed discharge conditions

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