Surface activation of polyetheretherketone (PEEK) and formation of calcium phosphate coatings by precipitation

Plasma activation of polyetheretherketone (PEEK) surfaces and the influence on coating formation in a supersaturated calcium phosphate solution was investigated in this study. It was observed that plasma treatment in a N2/O2 plasma had a significant effect on the wettability of the PEEK surface. The...

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Bibliographic Details
Published in:Journal of materials science. Materials in medicine Vol. 8; no. 11; pp. 683 - 690
Main Authors: HA, S.-W, KIRCH, M, BIRCHLER, F, ECKERT, K.-L, MAYER, J, WINTERMANTEL, E, SITTIG, C, PFUND-KLINGENFUSS, I, TEXTOR, M, SPENCER, N.D, GUECHEVA, M, VONMONT, H
Format: Journal Article
Language:English
Published: United States Springer Nature B.V 01.11.1997
Subjects:
Activation
Binding energy
Biomedical materials
Calcium phosphate
Calcium phosphates
Cell culture
Coatings
Composition
Contact angle
Materials science
Nucleation
Phosphate coatings
Plasma
Plasma applications
Polyetheretherketones
Precipitation (chemical)
Supersaturation
Surface chemistry
Wettability
Wetting
X ray photoelectron spectroscopy
ISSN:0957-4530, 1573-4838
Online Access:Get full text
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Summary:Plasma activation of polyetheretherketone (PEEK) surfaces and the influence on coating formation in a supersaturated calcium phosphate solution was investigated in this study. It was observed that plasma treatment in a N2/O2 plasma had a significant effect on the wettability of the PEEK surface. The contact angle decreased from 85 degrees to 25 degrees after plasma treatment. Cell culture testing with osteoblastic cell lines showed plasma activation not to be disadvantageous to cell viability. X-ray photoelectron spectroscopy (XPS) analysis was performed to characterize the chemical composition of the PEEK surfaces. It was observed that the O1s intensity increased with plasma activation time. At the C1s peak the appearance of a shoulder at higher binding energies was observed. Coating of PEEK was performed in a supersaturated calcium phosphate solution. Coating thicknesses of up to 50 microm were achieved after 24 days of immersion. Plasma activation followed by nucleation in a highly saturated hydroxyapatite solution had a positive effect on the growth rate of the layer on PEEK. Chemical analysis revealed that the coating consists of a carbonate-containing calcium phosphate.
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ISSN:0957-4530
1573-4838
DOI:10.1023/A:1018535923173