Non-Specific Protein Adsorption on
Polyetheretherketones -Challenges for
Application as Biomaterial
Volume 1 - Issue 4
Habil Svea Petersen*
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- Fakultät Ingenieurwissenschaften und Informatik, Hochschule Osnabrück, Germany
*Corresponding author:
Habil Svea Petersen, Fakultät Ingenieurwissenschaften und Informatik, Labor für Chemie und
Oberflächenmodifikation, Hochschule Osnabrück, Germany
Received: May 21, 2019; Published: June 07, 2019
DOI: 10.32474/MAMS.2018.01.000119
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Abstract
This work deals with the investigation of the non-specific protein adsorption on polyetheretherketones (PEEK). As this polymer
has positive characteristics like high comparable mechanical properties to bone and bio-inertness, it is more and more used as
implant material in orthopaedics and dentistry. However, non-specific protein adsorption to PEEK has not been investigated in
detail and can be a challenge for surface bioconjugation, as one method to enhance bone-PEEK contact. Here, we analysed and
compared the influence of different PEEK-surfaces, modified via plasma- and wet-chemical processes. First, the surfaces of the
various modified PEEK films were characterized regarding surface properties. In addition, the protein adsorption on differently
modified films was quantified at the model of bovine serum albumin via an adapted protein assay. Striking is the comparison of
contact angle measurement with the protein adsorption, evidencing higher protein adsorption with increased hydrophobicity of
PEEK surfaces. The pure PEEK-film is extremely hydrophobic and shows the highest protein loading. Chemically treated films show
a slightly lower contact angle and also a slightly decreased protein adsorption, while the plasma treated films, show a very low
contact angle immediately after modification and a very low protein adsorption. However, in another measurement after 14 day
of storage a significant increase in protein adsorption and contact angle was recognized. This result clarifies how PEEK surface
modification affects non-specific protein adsorption.
Keywords: High performance polymers; Non-specific protein adsorption; Surface modification; Biomaterial
Abstract|
Introduction|
Materials and Methods|
Results and Discussion|
Conclusion|
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