The surface treatment and adhesive bonding of polyetheretherketone. Part II. Surface characterization

Evans, Jrg; Bulpett, R.; Ghezel, M

doi:10.1163/156856187x00300

Cited by 17 publications

(5 citation statements)

References 14 publications

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“…ether bond (C O C) and carbonyl bond (C O) at 286.6 eV (shift: 1.6 eV) and 287.5 eV (shift: 2.5 eV) respectively. These binding energies for the ether and carbonyl bonds are in good accordance with previously published data [12,16,17]. With argon plasma treatment time of 60 s and above, a new, low amplitude, peak at 290.3 eV (shift: 5.3 eV) was detected.…”

Section: Resultssupporting

confidence: 92%

Photografting of argon plasma-treated graphite/PEEK laminate to enhance its adhesion

Chan-Park¹,

Zhang²,

Gao³

et al. 2002

Journal of Adhesion Science and Technology

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Graphite/ PEEK laminates were treated by argon plasma followed by air aging and then photografting of ®-g lycidyl !-acrylate bisphenol A (GABA) to improve their adhesion characteristics. The effects of plasma time and power and photografting time on the epoxy bonded single lap shear joints between graphite/ PEEK laminates were investigated. An optimum photografting time was found at which the single lap shear strength was optimized to 37 MPa compared to 28 MPa and 7 MPa obtained with air-aged argon plasma activated and pristine samples, respectively. Argon plasma treatment followed by air aging of graphite/ PEEK laminate introduces surface peroxides and hydroperoxides and these when cleaved with ultraviolet (UV) light in the presence of the GABA monomer results in covalent grafting of the latter to PEEK/ graphite laminate surface. The epoxy functionality of the GABA monomer then reacts with the epoxy adhesive. X-ray photoelectron spectroscopy (XPS) con rms the appearance of surface peroxides and hydroperoxides on air-aged argon plasma treated samples and disappearance of the same with UV irradiation. With UV irradiation of the air-aged argon plasma treated samples, XPS indicates the appearance of ester groups. Without the grafting monomer, UV irradiation in air cleaves the peroxide and causes oxidation resulting in the formation of surface esters. In the presence of the grafting monomer, UV irradiation results in covalent bonding of the monomer to the peroxide/ hydroperoxide through the acrylate functionality resulting in increased concentration of ether linkages as con rmed by our XPS data; the ester functionality present in the grafted monomer caused the appearance of the ester peak in the XPS spectrum.

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Section: Resultssupporting

confidence: 92%

Photografting of argon plasma-treated graphite/PEEK laminate to enhance its adhesion

Chan-Park¹,

Zhang²,

Gao³

et al. 2002

Journal of Adhesion Science and Technology

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“…The shape of the O 1s peak in Fig. 9(b) of the AE PEEK differed from that of the raw PEEK, where the C=O peak at 532 eV increased as a result of the acid oxidation [52]. Furthermore, it was more likely that the wide O 1s peak was the sum up of several smaller peaks attributed to the formation of a variety of oxygen-containing functional groups, such as C-OH, COOH or COOR, during the acid etching [53,54].…”

Section: Discussionmentioning

confidence: 89%

Bioactive glass–chitosan composite coatings on PEEK: Effects of surface wettability and roughness on the interfacial fracture resistance and in vitro cell response

Wei

Guo

Chen

et al. 2018

Applied Surface Science

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“…The plasma etching of PEEK is compared to other treatments with respect to its efficiency on the lap shear strength of glued sheets in [16], and the corresponding surface characterizations are reported in [23]. The plasma treatment was performed in an oxygen atmosphere at a chamber pressure of 140 Pa and a power of 100 W for 15 and 30 min.…”

Section: Results From the Literaturementioning

confidence: 99%

“…The kind of etching acid has a great influence on the effectiveness of surface modification, as was shown by the treatment with nitric-sulfuric acid, which did not exhibit any improvement of shear strength in comparison to the untreated material. In [23], studies on the surface composition of sulfuric acid-treated samples by XPS are published, which showed a distinct enhancement of the O/C ratio similar to those exposed to the oxygen plasma. In parallel, an increase of the polar component of the surface tension was observed.…”

Section: Results From the Literaturementioning

confidence: 99%

Surface Modifications of Polyetheretherketone (PEEK): Results from the Literature and Special Studies of Copper-Coated Films

Münstedt

Grossmann

2022

Polymers

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For some challenging applications of the high-performance thermoplastic polyetheretherketone (PEEK) in engineering or medical fields, the bonding to other materials is important. In these cases, modifications of the inert polymer surface are often necessary. Results from the literature with respect to sandblasting, corona discharge, plasma treatment, excimer-laser irradiation, and chromium-sulfuric-acid etching are described and discussed. Our own detailed studies of these methods under well-defined ex perimental conditions are reported, which make their comparability possible and support the assessment for certain applications. PEEK films coated with copper are of special interest due to their potential for flexible electronics. Copper foils glued by an epoxy resin and copper layers from physical vapor deposition are compared with respect to their mechanical adhesion. Surface properties were characterized with respect to roughness, contact angle, and oxygen-to-carbon (O/C) ratio. The latter has been found to be the most decisive parameter for good adhesion. It was shown that an enhancement of the O/C ratio can be achieved in several ways. The advantages and disadvantages of the methods applied are discussed under various aspects of applications.

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The surface treatment and adhesive bonding of polyetheretherketone. Part II. Surface characterization

Cited by 17 publications

References 14 publications

Photografting of argon plasma-treated graphite/PEEK laminate to enhance its adhesion

Photografting of argon plasma-treated graphite/PEEK laminate to enhance its adhesion

Bioactive glass–chitosan composite coatings on PEEK: Effects of surface wettability and roughness on the interfacial fracture resistance and in vitro cell response

Surface Modifications of Polyetheretherketone (PEEK): Results from the Literature and Special Studies of Copper-Coated Films

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